Article
Nanoscience & Nanotechnology
Yuan Feng, Jun-Tong Ren, Sha-Sha Ke, Hai-Feng Lu
Summary: In this paper, a scheme is proposed to distinguish Majorana bound states (MBSs) and trivial Andreev bound states (ABSs) by applying a local potential barrier. The authors find that MBSs appear at the sides of the potential barrier, indicating their topological nature, while ABSs are not induced by the local potential barrier. The conductance spectrum is found to evolve differently for MBSs and ABSs under varying potential strength.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Nanoscience & Nanotechnology
Saumen Acharjee, Umananda Dev Goswami
Summary: The study reveals the presence of anomalous Andreev bound states, Majorana mode, and Josephson supercurrent in the structure of clean noncentrosymmetric superconductor/half-metal/noncentrosymmetric superconductor under specific conditions, which can be controlled by the ratio of magnetic moments.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Physics, Condensed Matter
Beibing Huang, Xiaosen Yang, Qinfang Zhang, Ning Xu
Summary: This paper investigates the effects of s-wave superconducting pairings on the multilayers of an antiferromagnetic topological insulator (AFTI). It is found that when the local Chern numbers are dominated by the surface layers, the wavefunctions of chiral Majorana edge modes do not localize on the surface layers. In addition, the paper also studies the superconducting vortex phase transition and the role of the exchange field in enhancing the topological stability of the system.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Yulei Han, Shiyao Pan, Zhenhua Qiao
Summary: This study systematically investigated the electronic properties of Quantum Anomalous Hall Effect (QAHE) boundaries with different Chern numbers. The number of chiral edge modes along the junction is found to be determined by the difference of Chern numbers of adjacent regions, which can be understood from the coupling between counterpropagating channels along the junction. Finally, the current partition of topological junctions can be flexibly manipulated by tuning the number of quantum anomalous Hall regions, Chern numbers, and the magnetization directions.
Article
Physics, Multidisciplinary
Lingfei Zhao, Zubair Iftikhar, Trevyn F. Q. Larson, Ethan G. Arnault, Kenji Watanabe, Takashi Taniguchi, Francois Amet, Gleb Finkelstein
Summary: In this study, we systematically investigate Andreev conversion between a superconductor and graphene in the quantum Hall regime. We discover an unexpected and clear trend in the probability of electron-to-hole Andreev conversion, with temperature and magnetic field showing nearly decoupled dependencies. We also discuss the role of superconducting vortices and their impact on individual electrons in the quantum Hall edge.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Fabian Medina-Cuy, Dunkan Martinez, Francisco Dominguez-Adame, P. A. Orellana
Summary: We investigate periodically driven quantum dots in two different setups - one coupled to a topological superconductor and a normal metal lead, and the other connected to two topological superconductors and side-coupled to a normal metal lead. Using non-equilibrium Green's function techniques and Floquet formalism, we obtain the quasienergy spectra as a function of amplitude, frequency, and superconducting phase difference. Our results show unique electronic responses, such as broken particle-hole symmetry resulting from the non-locality of Majorana bound states. We also calculate time-averaged current and differential conductance to experimentally detect these spectral signatures in the proposed configurations.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Materials Science, Multidisciplinary
A. David, J. S. Meyer, M. Houzet
Summary: In this study, we investigate the transport properties of chiral Andreev edge states (CAES) in a quantum Hall-superconductor junction. We find that these properties strongly depend on the contact geometry and filling factor, and local barriers need to be added at the corners of the junction to reproduce such properties when using one-dimensional effective models.
Article
Materials Science, Multidisciplinary
Sudipta Chatterjee, Jyotirmay Sau, Saheli Samanta, Barnali Ghosh, Nitesh Kumar, Manoranjan Kumar, Kalyan Mandal
Summary: Magnetic topological semimetals exhibit anomalous behavior and can be controlled by adjusting the symmetry-protected nodal crossings. Co-2-based full Heusler compounds are a fertile ground for studying novel topological properties. This paper presents a comprehensive investigation of the anomalous Hall effect (AHE) in the ferromagnetic Heusler compound Co2CrGa through experimental and theoretical studies. The AHE in Co2CrGa is found to be dominated by the intrinsic Karplus-Luttinger Berry phase mechanism and the large observed AHC is attributed to the presence of Weyl nodes near the Fermi level EF. The experimental results reveal a nearly temperature-independent AHC and exceptionally large anomalous Hall angle and factor at room temperature.
Article
Materials Science, Multidisciplinary
Sankar Das Sarma, Haining Pan
Summary: This paper discusses the general issue of confirmation bias in experiments verifying various theoretical topological quantization predictions, using the recently retracted work by Zhang et al. and the related data from the Delft experiment as examples. It also analyzes a more recent nanowire experiment, showing that disorder may lead to misinterpretation of trivial zero-bias peaks as topological Majorana modes.
Article
Physics, Applied
Bin Jia, Shuai Zhang, Zhe Ying, Hangkai Xie, Bo Chen, Muhammad Naveed, Fucong Fei, Minhao Zhang, Danfeng Pan, Fengqi Song
Summary: Researchers fabricated MnBi4Te7 thin film devices and observed unconventional anomalous Hall effect, characterized by hysteresis anomaly and hump-like behavior, as well as interesting gate-controlled sign reversal. They suggest that the effect may be due to the coexistence of antiferromagnetic and ferromagnetic components resulting from inhomogeneous spatial variation, providing valuable insights into the material family study.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Condensed Matter
Chol-Jin Kang, Song-Il Kim, Chol-Song Yun, Chang-Il Kim
Summary: We explore the influence of magnetic field on the transport properties of FM/FI/s-wave SC junctions and FM/FM/s-wave SC junctions formed on the surfaces of 3DTIs. The magnetic field is applied perpendicular to the s-wave SC surfaces. The conductance is investigated for a broad range of magnetic field strength. Our findings show that the magnetoresistance depends on the magnitude of the magnetic field, and the results have potential applications in superconductor spintronics.
SOLID STATE COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Chang Liu, YunYi Zang, Yan Gong, Ke He, XuCun Ma, QiKun Xue, YaYu Wang
Summary: In this study, we investigated the anomalous Hall effect in magnetically doped topological insulators with Mn and Cr doping. We found that the Mn-type effect is strengthened by reducing the film thickness, while the Cr-type effect shows the opposite trend. We provided a phenomenological physical picture to explain the evolution of magnetic order and anomalous Hall chirality in magnetically doped topological insulators.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Physics, Applied
Pasquale Marra
Summary: Majorana bound states are quasiparticle excitations localized at the boundaries of a topologically nontrivial superconductor. They have special properties such as zero energy, charge neutrality, particle-hole symmetry, and spatial separation, making them ideal for the realization of topological quantum computation.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Donghao Liu, Zhan Cao, Xin Liu, Hao Zhang, Dong E. Liu
Summary: Efforts have been made to distinguish between Majorana zero modes (MZMs) and spatially separated quasi-Majorana modes (QMMs), both of which cause a quantized zero-bias peak in conductance measurement. A simple device utilizing a single nanowire was proposed to provide evidence of the topological Kondo effect in the topologically trivial phase with four QMMs, making it easier to distinguish Majorana and quasi-Majorana modes. Transport signatures are significantly different between the topological superconducting phase with MZMs and the topologically trivial phase with QMMs.
Article
Chemistry, Multidisciplinary
Jianhua Cui, Bin Lei, Mengzhu Shi, Ziji Xiang, Tao Wu, Xianhui Chen
Summary: This study investigates the thickness-dependent magnetic properties in exfoliated MnBi4Te7 thin flakes. An obvious odd-even layer-number effect is observed in few-layer MnBi4Te7. Noticeably, a sign reversal of the anomalous Hall effect is shown in monolayer MnBi4Te7. Compared to MnBi2Te4, the interlayer antiferromagnetic exchange coupling, which is essential for the realization of the quantum anomalous Hall effect, is greatly suppressed in MnBi4Te7. The demonstration of thickness-dependent magnetic properties is helpful for further exploring the topological quantum phenomena in MnBi4Te7.
Article
Physics, Multidisciplinary
Shingo Kobayashi, Ai Yamakage, Yukio Tanaka, Masatoshi Sato
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Yuya Ominato, Ai Yamakage, Kentaro Nomura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2019)
Article
Physics, Multidisciplinary
Yuki Yamazaki, Shingo Kobayashi, Ai Yamakage
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2020)
Article
Physics, Multidisciplinary
Yuki Yamazaki, Shingo Kobayashi, Ai Yamakage
Summary: This study proposes a new method for measuring bulk Cooper-pair symmetry in superconductors through electric response measurements. The relationships among electric multipoles, strain tensors, and superconducting symmetries under a given wallpaper group on the surfaces of topological crystalline superconductors are demonstrated. The research highlights the significance of electric detection in determining Cooper-pair symmetry in superconductors.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2021)
Article
Physics, Multidisciplinary
Terufumi Yamaguchi, Ai Yamakage
Summary: This study derived an analytical formula of the Hall conductivity on the surface of a topological insulator based on a perturbative approach, identifying magnetic textures contributing to the Hall conductivity and estimating the skyrmion-induced Hall conductivity. The results can be applied to conventional skyrmion systems as well as more general magnetic structures.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2021)
Article
Energy & Fuels
Akitoshi Nakano, Ai Yamakage, Urara Maruoka, Hiroki Taniguchi, Yukio Yasui, Ichiro Terasaki
Summary: Research on the thermoelectric properties of single crystal Ta2PdSe6 revealed a giant Peltier conductivity of 100 A cm(-1) K-1 at 10 K, explained by conventional semiconductor theory. The uncompensated semimetal, high mobility, and heavy effective mass are identified as responsible factors for the giant Peltier conductivity. This discovery paves the way for exploring superior semimetals for potential new applications, such as an electric current generator for superconducting magnets.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Takumi Funato, Ai Yamakage, Mamoru Matsuo
Summary: In this study, we theoretically investigate the generation of spin current induced by a surface acoustic wave in a superconductor. Through quantum kinetic theory calculations, we demonstrate that spin current can be generated in a single-superconductor layer, with aluminum showing detectable magnitude of spin current. This proposal contributes to the advancement of spin transport in superconductors from both application and fundamental physics perspectives.
Article
Materials Science, Multidisciplinary
Risako Kikuchi, Takumi Funato, Ai Yamakage
Summary: In this study, we theoretically investigate the quantum transport in a three-dimensional spin-1 chiral fermion system with impurity scattering. Using the self-consistent Born approximation, we observe peak structures in the density of states and significant suppression of electrical conductivity near zero energy. Unlike Weyl fermions, the zero-energy conductivity in this system shows less dependence on impurity concentration, which is attributed to the flat-band structure of the spin-1 chiral fermion.
Article
Materials Science, Multidisciplinary
Yuya Ominato, Ai Yamakage, Takeo Kato, Mamoru Matsuo
Summary: We theoretically investigate the modulation of ferromagnetic resonance (FMR) in d-wave superconductor/ferromagnetic insulator bilayer systems. Our results demonstrate the effectiveness of using spin pumping as a probe technique to determine the symmetry of unconventional superconductors in nanoscale thin films.
Article
Materials Science, Multidisciplinary
Shingo Kobayashi, Yuki Yamazaki, Ai Yamakage, Masatoshi Sato
Summary: Identification of Cooper-pair symmetry in unconventional superconductors is crucial and challenging. A new theory based on topological superconductivity establishes a connection between Majorana fermions' electromagnetic response and Cooper-pair symmetry. The theory also reveals potential magnetic octupole responses in high-spin or nonsymmorphic superconductors, providing direct evidence for exotic superconducting states.
Article
Materials Science, Multidisciplinary
Yusuke Imai, Ai Yamakage, Hiroshi Kohno
Summary: This study focuses on spin-orbit torques and transport properties of Dirac electrons on the surface of ferromagnetic topological insulators, exploring the effects of deviation from the ideal Dirac model and the in-plane anisotropies arising from in-plane magnetization. Results show that in-plane anisotropy is generally stronger for p-type carriers than n-type carriers and that the in-plane anisotropy of the dissipative spin-orbit torque changes sign across the Dirac point.
Article
Materials Science, Multidisciplinary
Yuki Yamazaki, Shingo Kobayashi, Ai Yamakage
Summary: This paper investigates the magnetic response of Majorana Kramers pairs on the surface of topological superconductors, revealing the influence of time-reversal and crystalline symmetries. By analyzing topological invariants, the magnetic responses are classified into four types with distinguishable characteristics possibly related to different topological invariants. The study also applies the theory to the topological nonsymmorphic crystalline superconducting state in UCoGe, showing a biaxially anisotropic magnetic response.
Article
Materials Science, Multidisciplinary
Yusuke Imai, Terufumi Yamaguchi, Ai Yamakage, Hiroshi Kohno
Summary: This study focuses on the spin-torque and electrical transport properties of Dirac electrons on the surface of magnetic topological insulators. The effects of hexagonal warping on the linear dispersion of surface Dirac electrons are investigated. Different physical properties such as electrical conductivity are found to be greatly influenced by the presence of hexagonal warping. Additionally, current-induced torques with magnetization gradient are studied, revealing the existence of various forms of torques and their behaviors under different conditions.
Article
Materials Science, Multidisciplinary
Yoshihiko Okamoto, Kazushige Saigusa, Taichi Wada, Youichi Yamakawa, Ai Yamakage, Takao Sasagawa, Naoyuki Katayama, Hiroshi Takatsu, Hiroshi Kageyama, Koshi Takenaka
Article
Materials Science, Multidisciplinary
Keimei Sakurai, Maria Teresa Mercaldo, Shingo Kobayashi, Ai Yamakage, Satoshi Ikegaya, Tetsuro Habe, Panagiotis Kotetes, Mario Cuoco, Yasuhiro Asano
Article
Nanoscience & Nanotechnology
Spyridon G. Kosionis, Emmanuel Paspalakis
Summary: In this study, we theoretically investigate the pump-probe response and the four-wave mixing spectrum in a hybrid system composed of a semiconductor quantum dot and a spherical metal nanoparticle. Using a density matrix methodology, we calculate the absorption/gain, dispersion, and four-wave mixing spectra, and analyze their spectral characteristics. We also apply the metastate theory and the dressed-state picture to predict the positions of the spectral resonances.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
L. S. Lima
Summary: This study investigates quantum correlation and entanglement in the non-Hermitian Hubbard model. By analyzing quantum entanglement measures such as entanglement negativity and entropy, the effect of non-Hermitian imaginary hopping on the system is explored. It is found that in the large... limit, the non-Hermiticity reverses the behavior of the ground state energy and low-lying excitations.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Nam-Chol Ri, Chung-Sim Kim, Sang-Ryol Ri, Su-Il Ri
Summary: By decreasing the lattice thermal conductivity of GNR through chemical derivation and strain, enhancing the thermoelectric properties of the electron part can be an important method to approach PGEC. This paper proposes synthesized hybrid systems formed by chemical derivation in the middle parts of b-AGNRs, and investigates the band structures and thermoelectric properties of the electron part under different strains. The results show that the band gaps of the systems significantly increase under different strains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Le T. T. Phuong, Tran Cong Phong
Summary: This study investigates the effects of gas molecules adsorbed on /312-borophene on its electronic heat capacity and thermal Schottky anomaly. The results show that the adsorbed gas molecules have different impacts on the electronic heat capacity, leading to the generation of various new energy levels.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Tianyan Jiang, Jie Fang, Wentao Zhang, Maoqiang Bi, Xi Chen, Junsheng Chen
Summary: This paper investigates the adsorption and sensing properties of transition metal-doped WSSe gas-sensitive devices towards H2, CO, and CO2 gases related to thermal runaway in Li-ion batteries using density functional theory. The results show that Ti, Mn, and Mo dopants preferentially bind to the S-surface of the WSSe monolayer, and all three monolayers exhibit significantly improved sensing characteristics, with chemisorption towards CO. Band structure analysis suggests that the Ti-WSSe monolayer has the potential to be used as a resistive CO detection sensor. Recovery time calculations indicate the reuse capabilities of the gas-sensitive devices. Mn-WSSe monolayer shows potential for H2 detection, while Mo-WSSe monolayer is more suitable for CO2 detection. This work lays the foundation for potential gas-sensitive applications of WSSe monolayer in thermal runaway scenarios, advancing research in gas sensing domains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Olga A. Alekseeva, Aleksandr A. Naberezhnov, Ekaterina Yu. Koroleva, Aleksandr Fokin
Summary: This study investigates the temperature dependence of crystal structure and dielectric response in a nanocomposite material containing porous glasses and embedded sodium nitrate. The results reveal a crossover point in the temperature dependence of the order parameter of the structural transition in sodium nitrate nanoparticles, as well as a decrease in activation energy of sodium ions hopping conductivity during heating.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Lijun Cheng, Fang Cheng
Summary: This paper investigates the effects of electric and magnetic fields on the Goos-Hanchen (GH) shift in a semi-Dirac system. The results show that the magnitude and direction of the GH shift depend on various factors such as incidence angle, electric barrier height and width, and magnetic field. It is observed that there is a saltus step in GH shifts at the critical magnetic field, which decreases with increased potential barrier thickness. Additionally, the GH shift can be significantly enhanced by applying an electric field in the III region. These findings are important for the development of semi-Dirac based electronic devices.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Alexander K. Fedotov, Uladzislaw E. Gumiennik, Julia A. Fedotova, Janusz Przewoznik, Czeslaw Kapusta
Summary: The study conducted an improved analysis of carrier transport in single-layer graphene and hybrid structures, showing the coexistence of negative and positive contributions in magnetoresistive effect. Various models were used to analyze the dependences on temperature and magnetic field, providing insights into the behavior of electrical resistance in the structures.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xuhui Peng, Tao Chen, Ruotong Chen, Shizheng Chen, Qing Zhao, Xiaoping Huang
Summary: In this study, a novel method was proposed to design and fabricate optoelectronic devices with highly precise controlled photorefractive liquid crystal structures. By utilizing quantum dots and electric tuning, a regular periodic grating was formed in a quantum dot-doped liquid crystal volume illuminated by a laser standing evanescent wave field. The obtained optical diffraction pattern showed equally spaced light spots and high diffraction efficiency, indicating a significant change in the refractive index of the nanostructured device.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Kai-Hua Yang, Xiao-Hui Liang, Huai-Yu Wang, Yi-Fan Wu, Qian-Qian Yang
Summary: In this work, a theoretical model is proposed to achieve the controllability of quantum interference and decoherence. The effects of intralead Coulomb interaction, interdot tunneling, and electron-phonon interactions on differential conductance are investigated. The results show the appearance of destructive interference, Fano interference, and negative differential conductance in strong dot-lead tunneling regions, while a characteristic pattern of positive and negative differential conductances appears in the weak dot-lead tunneling regime.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xueying Wang, Qian Ma, Qi Zhang, Yi Wang, Lingyu Li, Dongheng Zhao, Zhiqiang Liu
Summary: Porous double-channel alpha-Fe2O3/SnO2 heterostructures with tunable surface/interface transport mechanism were successfully fabricated by electrospinning and calcination. These heterostructures exhibited a large specific surface area, providing more active sites and enhanced adsorption capacity. The optimal composite materials showed the highest response value and the fastest response/recovery times to DMF, along with good cycling performance, long-term stability, and high gas selectivity.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Donglin Guo, Zhengmeng Xu, Chunhong Li, Kejian Li, Bin Shao, Xianfu Luo, Jianchun Sun, Yilong Ma
Summary: Using full electron-phonon interactions and the Boltzmann transport equation, this study investigates the phonon scattering channel and electrical properties of graphene under anharmonic phonon renormalization (APRN). The results show that the APRN reduces the phonon frequency and three-phonon phase space with increasing temperature, affecting the acoustic branch more than the optical branch. The thermal conductivity of graphene decreases after considering three- and four-phonon scattering, and the primary scattering channels are identified. Furthermore, the APRN increases the strength of electron-phonon coupling and leads to an increase in n-type electric resistance at room temperature.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Hongping Zhao, Man Zhao, Dayong Jiang
Summary: The study proposes a broadband photodetector with high response, high sensitivity, and controllable band by integrating quantum dots and highly conductive materials. The PD composed of ZnO film/PbS quantum dots heterostructure shows excellent photoresponse performance in the UV-Vis-NIR range, with the peak responsivity increased by 550%, accompanied by significant red shift, faster response, and recovery speed. By using RF magnetron sputtering to prepare ultra-thin ZnO film, the impact of PbS quantum dots on the photoelectric properties of ZnO film is comprehensively and systematically discussed.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Ye Xuan Meng, Liwei Jiang, Yisong Zheng
Summary: Manipulating magnetism by electrical means is an effective method for realizing ultra-low power spintronic-integrated circuits. In this study, it is demonstrated that the two-dimensional semiconductor material InO monolayer can be tuned to a half-metallic state by applying a gate voltage, providing theoretical guidance for adjusting two-dimensional magnetic semiconductors.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Anusha Kachu, Aalu Boda
Summary: In this research, we investigated the impact of confinement nature on a neutral hydrogenic donor impurity in a quantum dot. The study demonstrated intriguing behavior in response to changes in potential shape, quantum dot parameters, and spin-orbit coupling strengths. The findings provide valuable insights into the fundamental physics of quantum dots and impurities and can aid in the design and optimization of QD-based technologies.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
