Article
Physics, Condensed Matter
Bogdan Guster, Miguel Pruneda, Pablo Ordejon, Enric Canadell, Jean-Paul Pouget
Summary: NbSe3 and m-TaS3 are quasi-1D metals with three different types of chains, undergoing Peierls transitions at T-P1 and T-P2. The transitions are discussed based on first-principles DFT calculation of their Fermi surface and electron-hole response function. Analysis reveals that intra-chain inter-band nesting processes dominate the strongest response for both compounds.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Review
Chemistry, Multidisciplinary
Sugata Chowdhury, Albert F. Rigosi, Heather M. Hill, Patrick Vora, Angela R. Hight Walker, Francesca Tavazza
Summary: This review focuses on computational efforts and advancements in the field of charge density waves (CDWs) in two-dimensional (2D) materials. It covers various subtopics such as computational techniques, resulting atomic structures, electron-phonon interaction effects, confinement and dimensionality effects, and future outlook.
Article
Chemistry, Multidisciplinary
Hossain Mohammad Ikram, Ara Ferdous, Shahed Syed Mohammad Fakruddin, Zhipeng Wang, Tadahiro Komeda
Summary: We report the finding of a 1T phase island of NbSe2 on a cleaved surface and its magnetic properties. The magnetic moment placed in the superconducting state generates the Yu-Shiba-Rusinov (YSR) state with specific position and anisotropic decay behavior. The enhancement of the YSR peak is closely related to the local curvature of the film.
Article
Chemistry, Multidisciplinary
Yusen Ye, Jimin Qian, Xiao-Wei Zhang, Chong Wang, Di Xiao, Ting Cao
Summary: In this paper, a new moire system is discussed where the emergence of long moire periodicity is due to the presence of two different van der Waals layers with vastly different lattice constants. The first layer is reconstructed using a root 3 by root 3 supercell resembling the Kekule distortion in graphene, leading to nearly commensurate reconstruction with the second layer. This construction allows for coupling between moire bands from remote valleys in momentum space, resulting in valley pseudospin textures that can be controlled by external factors.
Review
Crystallography
Hui Chen, Jiwei Zhang, Dongxiao Kan, Jiabei He, Mengshan Song, Jianhua Pang, Songrui Wei, Kaiyun Chen
Summary: This review discusses the phase structures and phase transition properties of two-dimensional materials graphene and transition metal dichalcogenides (TMDs). It explores the various methods to trigger phase transitions and highlights the future opportunities and challenges in this field.
Article
Physics, Applied
I. G. Gorlova, S. A. Nikonov, S. G. Zybtsev, V. Ya. Pokrovskii, A. N. Titov
Summary: The layered quasi one-dimensional compound TiS3 exhibits remarkable optical properties, especially photoconductivity, which is influenced by the mobility of electrons. As the temperature decreases, the photoconductivity of TiS3 increases moderately, showing semiconductor behavior above approximately 100 K and a potential phase transition into a collective state below 60 K. Additionally, a drop in electron mobility is observed around 17 K.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Xiaokun Wen, Wenyu Lei, Liangyi Ni, Li Yang, Pengzhen Zhang, Yuan Liu, Haixin Chang, Wenfeng Zhang
Summary: ZrTe3 nanoribbons, as a potential alternative to copper for future interconnects, exhibit high stability and breakdown current density, showing a nonlinear increase in performance.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Cedric Uhlmann, Thomas J. Feuerstein, Tim P. Seifert, Andre P. Jung, Michael T. Gamer, Ralf Koeppe, Sergei Lebedkin, Manfred M. Kappes, Peter W. Roesky
Summary: The versatile metalloligand was converted into early-late heterotetrametallic complexes, which showed photoluminescence with either remarkably different or similar features compared to related solely coinage metal containing acetylide amidinate complexes.
DALTON TRANSACTIONS
(2022)
Article
Multidisciplinary Sciences
Suk Hyun Sung, Yin Min Goh, Hyobin Yoo, Rebecca Engelke, Hongchao Xie, Kuan Zhang, Zidong Li, Andrew Ye, Parag B. Deotare, Ellad B. Tadmor, Andrew J. Mannix, Jiwoong Park, Liuyan Zhao, Philip Kim, Robert Hovden
Summary: The research reveals that twisted 2D materials contain a torsional displacement field comprised of three transverse periodic lattice distortions, which can be quantified using rudimentary electron diffraction methods. In twisted bilayer graphene, the torsional PLD amplitude starts forming at angles below 3.89 degrees, and additional PLD harmonics arise at extremely low twist angles.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Nicholas A. Pike, Antoine Dewandre, Francois Chaltin, Laura Garcia Gonzalez, Salvatore Pillitteri, Thomas Ratz, Matthieu J. Verstraete
Summary: Research has shown that layered heterostructures can lead to compression of interlayer spacing and enhancement of induced polarization interaction, without complete charge transfer. The effects of heterostructures are real and may be formed by combinations of different chalcogens. Incommensurate stacking of Ti-based dichalcogenides can stabilize the unstable charge-density wave phonon mode.
Article
Multidisciplinary Sciences
Mengke Liu, Joshua Leveillee, Shuangzan Lu, Jia Yu, Hyunsue Kim, Cheng Tian, Youguo Shi, Keji Lai, Chendong Zhang, Feliciano Giustino, Chih-Kang Shih
Summary: Research on monolayer group V transition metal dichalcogenides in their 1T phase has shown that 1T-NbSe2 is a charge transfer insulator with electron correlation-induced magnetic properties. By creating a vertical 1T/2H NbSe2 heterostructure, exchange interactions between localized magnetic moments in the 1T phase and the metallic/superconducting phase were confirmed.
Article
Materials Science, Multidisciplinary
Heqiu Li, Xiaoyu Liu, Yong Baek Kim, Hae-Young Kee
Summary: In this study, the different charge density wave (CDW) structures in the kagome metal AV3Sb5 are explained by considering intralayer and interlayer electron-electron interactions as well as the coupling between electrons and lattice distortions. The repulsive electron-electron interaction induces SD or ISD CDW structures, and the introduction of interlayer interaction leads to & pi;-shifted CDW with staggered ordering along the c axis. Additionally, a phase with alternating SD and ISD CDW structures can be stabilized as the ground state under strong interlayer interaction.
Article
Chemistry, Physical
S. G. Zybtsev, V. Ya Pokrovskii, V. F. Nasretdinova, S. Zaitsev-Zotov, E. Zupanic, M. A. van Midden, Woei Wu Pai
Summary: High temperature studies of the monoclinic phase of NbS3 (NbS3-II) show stable behavior up to around 550K, with clear evidence of charge-density wave (CDW) sliding around 450-475K. The high density charges condensed in the CDW exhibit extremely low mobility, leading to surprising dielectric-like temperature variations in conductivity above the CDW formation temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Jinwon Lee, Jae Whan Park, Gil Young Cho, Han Woong Yeom
Summary: In this study, electronically and topologically distinct kinks are discovered along electronic domain walls in a correlated van der Waals insulator of 1T-TaS2. The atomic structures and in-gap electronic states of these kinks are unveiled, which are approximately mapped into Su-Schrieffer-Heeger solitons. The large degeneracy and robust geometrical nature of these kinks have potential applications in handling multilevel information in van der Waals materials architectures.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sugata Chowdhury, Heather M. Hill, Albert F. Rigosi, Andrew Briggs, Helmuth Berger, David B. Newell, Angela R. Hight Walker, Francesca Tavazza
Summary: Tantalum diselenide is a metallic transition metal dichalcogenide with structure and vibrational behavior dependent on temperature and thickness, including the emergence of CDW states. Experimental Raman modes, including forbidden modes and low-frequency CDWs, were matched to DFT-predicted vibrations, supporting the vibrational visualizations. Experimental phonons observed as a function of temperature and thickness further emphasized the importance of understanding CDWs for potential solid-state quantum information platforms based on nonequilibrium phenomena.
ACS APPLIED NANO MATERIALS
(2021)
Review
Materials Science, Multidisciplinary
Archit Dhingra, Dmitri E. Nikonov, Alexey Lipatov, Alexander Sinitskii, Peter A. Dowben
Summary: Transition metal trichalcogenides (TMTs) are 2D materials with potential applications in low-dimensional optical and electronic devices. However, the performance of 2D devices based on TMTs has been limited by contact-related issues. In this review, the interfacial interactions between gold and various TMTs were investigated to find solutions to these problems.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Physics, Condensed Matter
Simeon J. Gilbert, Mingxing Li, Jia-Shiang Chen, Hemian Yi, Alexey Lipatov, Jose Avila, Alexander Sinitskii, Maria C. Asensio, Peter A. Dowben, Andrew J. Yost
Summary: The presence of in-plane chiral effects and spin-orbit coupling in a TiS3(001) field-effect phototransistor is confirmed through changes in the photocurrent caused by left versus right circularly polarized light. NanoARPES measurements indicate that the direction of the photocurrent is protected by strong spin-orbit coupling and the anisotropy of the band structure. Dark electronic transport measurements show that TiS3 is n-type with an electron mobility ranging from 1-6 cm(2)V(-1)s(-1). I-V measurements under laser illumination demonstrate that the photocurrent exhibits bias directionality dependence similar to bipolar spin diode behavior. The presence of spin-orbit coupling in TiS3, a material without heavy elements, is attributed to the loss of inversion symmetry at the TiS3(001) surface.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Saman Bagheri, Jehad Abourahma, Haidong Lu, Nataliia S. Vorobeva, Shengyuan Luo, Alexei Gruverman, Alexander Sinitskii
Summary: This paper demonstrates a high-yield fabrication of electromechanical devices based on individual suspended monolayer MXene flakes. The devices show stable electromechanical responses and high electrical conductivity.
Article
Multidisciplinary Sciences
Jubin Nathawat, Ishiaka Mansaray, Kohei Sakanashi, Naoto Wada, Michael D. Randle, Shenchu Yin, Keke He, Nargess Arabchigavkani, Ripudaman Dixit, Bilal Barut, Miao Zhao, Harihara Ramamoorthy, Ratchanok Somphonsane, Gil-Ho Kim, Kenji Watanabe, Takashi Taniguchi, Nobuyuki Aoki, Jong E. Han, Jonathan P. Bird
Summary: Stacking graphene with h-BN can change its bands, creating narrow minigaps and wider minibands. Hot carrier dynamics in these bands are crucial for functional (opto)electronic devices. In this study, we use rapid electrical pulsing to drive carriers into the strong electron-phonon coupling limit. By adjusting the chemical potential, we observe a cyclical evolution between metallic and semiconducting states. Our results show the importance of considering the dynamics of hot carriers and hot phonons in functional graphene superlattices.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Jong E. Han, Camille Aron, Xi Chen, Ishiaka Mansaray, Jae-Ho Han, Ki-Seok Kim, Michael Randle, Jonathan P. Bird
Summary: The significant difference between predicted and experimental switching fields in correlated insulators under a far-from-equilibrium DC electric field necessitates a reevaluation of current microscopic understanding. The authors introduce a generic model of electrons coupled to an inelastic phononic medium and show that an electron avalanche can occur in the bulk limit of such insulators at arbitrarily small electric field. The quantum avalanche is triggered by the generation of in-gap states through a multi-phonon emission process, leading to a premature and partial collapse of the correlated gap.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Michael J. Loes, Saman Bagheri, Nataliia S. Vorobeva, Jehad Abourahma, Alexander Sinitskii
Summary: This study proposes a highly tunable gas sensor strategy by combining MXene with a sacrificial material that can be controlled oxidized to form oxide nanoparticles, altering sensing response. The controlled annealing process retains the integrity of MXene sheets while converting the sacrificial material to a metal oxide, fine-tuning the sensor properties. The approach is demonstrated using Ti3C2Tx MXene mixed with TiS3, showing improved sensor response to ethanol. The addition of TiS3 allows for the preservation of MXene as the sensor material and the tuning of sensor properties through annealing for specific analytes or applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Michael J. Loes, Alexey Lipatov, Nataliia S. Vorobeva, Haidong Lu, Jehad Abourahma, Dmitry S. Muratov, Alexei Gruverman, Alexander Sinitskii
Summary: In this study, the decoration of two-dimensional (2D) materials with MAPbI3 nanoparticles is shown to enhance their visible light photoresponse. The approach was demonstrated using 2D SnS2, which has limited absorption in the visible range. Field-effect transistors based on the decorated SnS2 showed increased photoresponse throughout the visible spectrum. The decorated devices exhibited stable and reproducible photoswitching behavior.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Saman Bagheri, Alexey Lipatov, Nataliia S. Vorobeva, Alexander Sinitskii
Summary: MXenes are a diverse family of two-dimensional materials that can be synthesized by selectively etching A-elements from layered MAX phases. This study presents a strategy for A-modified MXenes, where the higher reactivity of the A'-element enables its selective etching and results in A''-modified MXenes. The incorporation of Sn in Ti3AlC2 MAX phase and subsequent etching produces Sn-modified Ti3C2Tz MXene with improved environmental stability and interesting electrostatic expansion properties.
Article
Chemistry, Physical
Kendon Shirley, Hsinhan Tsai, Nicholas Cucciniello, Jonathan Bird, Quanxi Jia, Elias Torres, Phil Butler, Anthony Butler, Jerome Crocco, Eslam Taha, Abdulsalam Alhawsawi, Jessica Germino, Maoz Dor, Chaochao Dun, Omer Firat, Jared Parker, Matt Graham, Kostya S. Novoselov, Wanyi Nie
Summary: We have developed a recyclable perovskite-graphene heterostructure for high-performance X-ray detection in medical imaging. The graphene pixel maintains high mobility even after perovskite deposition, enabling efficient conversion for ultrahigh sensitivity. By increasing the operational bias of the graphene channel, the signal-to-noise ratio of X-ray detection can be significantly improved. The perovskite layer can be easily washed off without damaging the graphene, making our heterostructure X-ray detector recyclable.
ACS ENERGY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Haidong Lu, Hugo Aramberri, Alexey Lipatov, Roger Proksch, Alexander Sinitskii, Jorge Iniguez, Alexei Gruverman
Summary: This study investigates the longitudinal piezoelectric coefficient in 2D ferroelectric 1T ''-MoS2 and finds that it exhibits negative piezoelectricity. The experimental results are supported by theoretical calculations.
ACS MATERIALS LETTERS
(2023)
