Article
Materials Science, Multidisciplinary
T. Shang, J. Philippe, X. Y. Zhu, H. Zhang, B. C. Yu, Z. X. Zhen, H-R Ott, J. Kitagawa, T. Shiroka
Summary: We conducted a comprehensive study on the Zr5Pt3Cx superconductors, finding that they exhibit superconductivity independent of the carbon (C) content. The properties of the superconductors were investigated at both macroscopic and microscopic levels, and the results showed that they possess conventional superconductivity. These findings are important for understanding the electronic properties and superconducting behavior of this type of superconductor.
Article
Physics, Applied
V. R. Sodisetti, S. Ncube, C. Coleman, R. M. Erasmus, E. Flahaut, S. Bhattacharyya
Summary: The study of spin-phonon coupling in Gd-filled double-walled carbon nanotubes revealed phonon frequency hardening at low temperatures, attributed to phonon renormalization induced by spin-phonon coupling interaction. The estimated spin-phonon coupling constants for the G(ext)(+) and G(int)(+) phonon modes were found to be 12.2 and 5.0 cm(-1) respectively, suggesting potential benefits for designing effective molecular qubits in a one-dimensional system with a three times higher spin-phonon coupling than other multiferroic compounds.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Piotr Ruszala, Maciej J. Winiarski, Malgorzata Samsel-Czekala, Lan Maria Tran, Michal Babij, Zbigniew Bukowski
Summary: In this study, electrical transport and heat capacity measurements were carried out on single crystals of the tetragonal compound CaIr2Ge2. Analysis of the data, supported by electronic structure calculations, revealed an anisotropic Dirac cone at the Fermi level in the bulk band structure. Despite this feature, the compound exhibited metallic behavior with low Sommerfeld coefficient and non-superconducting properties. The transverse magnetoresistance showed sub-quadratic scaling and small values, attributed to low relaxation time of charge carriers and small electronic mobilities. Additionally, angular magnetoresistance exhibited minimal anisotropy, consistent with weakly anisotropic large 3D Fermi surface sheets predicted by calculations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Max Bramberger, Jernej Mravlje, Martin Grundner, Ulrich Schollwock, Manuel Zingl
Summary: The study reveals that BaOsO3 is a moderately correlated oxide with moderate quasiparticle renormalization. Spin-orbit coupling leads to a splitting of van Hove singularity near the Fermi energy and a reduction in electronic correlations.
Article
Physics, Multidisciplinary
D. Bothner, I. C. Rodrigues, G. A. Steele
Summary: The study shows that photon-pressure interaction between superconducting circuits can reach the strong coupling regime, allowing for flexible control of the quantum state of the electromagnetic resonator and enabling new experiments.
Article
Chemistry, Multidisciplinary
Sanghoon Kim, Sachin Pathak, Sonny H. Rhim, Jongin Cha, Soyoung Jekal, Soon Cheol Hong, Hyun Hwi Lee, Sung-Hun Park, Han-Koo Lee, Jae-Hoon Park, Soogil Lee, Hans-Georg Steinruck, Apurva Mehta, Shan X. Wang, Jongill Hong
Summary: This study demonstrates the achievement of inversion asymmetry and unusual strain at interfaces in [Co/Pd] superlattices through low-energy proton irradiation and selective removal of oxygen. The results highlight the importance of establishing both giant orbital anisotropy and strong spin-orbit coupling at the interface for exploring spintronic devices with new functionalities.
Article
Chemistry, Inorganic & Nuclear
Lanlan Xu, Qingshi Liu, Junling Meng, Wuping Liao, Xiaojuan Liu, Hongjie Zhang
Summary: This study investigates the couplings of lattice, charge, spin, and electronic behaviors underlying the Eu-Mn charge transfer in EuMnO3 using first-principles calculations. The potential valence transition from Eu3+/Mn3+ to Eu2+/Mn4+ is observed in a compressed lattice with little distortions, under hydrostatic pressure and external strain. The magnetic exchange interactions within different equilibrium structures and the influence of Mn anti-ferromagnetism on the emergence of Eu2+ are also discussed.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Applied
Hamza Raniwala, Stefan Krastanov, Lisa Hackett, Matt Eichenfield, Dirk R. Englund, Matthew E. Trusheim
Summary: We introduce a hybrid tripartite quantum system that enables strong coupling between a semiconductor spin, a mechanical phonon, and a microwave excitation in a superconducting circuit. This system achieves high coupling rates and ultrahigh cooperativities, allowing for efficient quantum state transfer. The device is expected to enable hybrid quantum architectures for information processing, memory, and networking.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Multidisciplinary
Alireza Akbari, Peter Thalmeier
Summary: Research suggests that a spin resonance may still occur in f-electron heavy fermion superconductors even when a fully gapped state is observed at low temperatures. The study shows that resonance can also appear in the fully gapped state for a two-dimensional hybridized superconductor with an unconventional nodal gap function.
Article
Multidisciplinary Sciences
Ashta Navdeep Karuriya, Francois Barthelat
Summary: This article introduces a method for producing fully dense 3D architectural materials by assembling building particles into crystalline structures using mechanical vibrations. Experimental results show that these granular crystals are 25 times stronger than randomly packed spheres and can be recycled. The study also reveals interesting mechanisms such as nonlinear deformation, crystal plasticity, and pressure-dependent plasticity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Multidisciplinary
K. Samokhin
Summary: The Zeeman coupling of band electrons with an external magnetic field in some trigonal and hexagonal crystals is strongly anisotropic and necessarily vanishes along the main symmetry axis. This results in qualitative changes in the temperature dependence of electron spin susceptibility in the superconducting state, particularly modifying the power-law exponents at low temperatures due to the contribution of nodal quasiparticles compared to textbook values.
Article
Chemistry, Multidisciplinary
Zhiyan Chen, Xiangqian Lu, Jiawei Qiao, Jianqiang Liu, Wei Qin
Summary: The response of crystal structure to external stimuli provides potential applications in the areas of detection, diagnosis, and repair. In this study, two allotropic organic cocrystals with different space groups and lattice parameters, but identical donor and acceptor molecules, were fabricated. Under external stimuli, pronounced differences in lattice vibration and electron-phonon coupling were observed in these two crystals, along with different strengths of spin polarizations.
Article
Physics, Applied
Giovanni Franco-Rivera, Josiah Cochran, Seiji Miyashita, Sylvain Bertaina, Irinel Chiorescu
Summary: We demonstrate a strong coupling between a Gd3+ spin ensemble in a scheelite single crystal and a superconducting cavity, resulting in a large separation of spin-photon states. The interaction is well described by the Dicke model and crystal-field Hamiltonian. The presence of photons in the cavity induces changes in the crystal-field parameters and perturbs the crystal ground state. Numerical calculations estimate the cavity sensing volume and the average spin-photon coupling strength to be approximately 620 Hz.
PHYSICAL REVIEW APPLIED
(2023)
Article
Nanoscience & Nanotechnology
Florence Grenapin, Alessio D'Errico, Ebrahim Karimi
Summary: Some anisotropic materials form semicrystalline structures called spherulites, which exhibit a characteristic maltese-cross-like pattern when observed in a polarisation microscope. These patterns are associated with a strong light's spin-orbit coupling induced by the spherulite structures. Experimental demonstrations using crystallized ascorbic acid samples show the creation of optical vortices in transmitted laser beams and the formation of inhomogeneous polarisation patterns. These findings suggest potential applications of spherulites based on other materials in challenging tasks of polarisation and spatial shaping of electromagnetic radiation, especially in the THz domain.
Article
Chemistry, Multidisciplinary
Abhijit Sau, Kalaivanan Nagarajan, Bianca Patrahau, Lucas Lethuillier-Karl, Robrecht M. A. Vergauwe, Anoop Thomas, Joseph Moran, Cyriaque Genet, Thomas W. Ebbesen
Summary: Vibrational strong coupling (VSC) has been shown to influence the rate and chemoselectivity of chemical reactions, with observations suggesting that symmetry considerations can be used to control chemical selectivity under VSC. In the case of pericyclic reactions, VSC affects the stereoselectivity of reactions, with changes in rate and thermodynamics depending on the coupled vibrational mode. These results confirm the key role of symmetry in chemistry under VSC.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Physics, Condensed Matter
Hai-Yang Ma, Dandan Guan, Shiyong Wang, Yaoyi Li, Canhua Liu, Hao Zheng, Jin-Feng Jia
Summary: Based on first-principle calculations, the van der Waals layered compound Ti2Te2O is predicted to possess both the quantum anomalous Hall (QAH) and magnetic quantum spin Hall (QSH) states, depending on the magnetic order in its single layer. This research opens up new possibilities for achieving a controllable phase transition between two topological nontrivial phases through magnetism tailoring.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Mechanics
A. D. Lai, J. F. Jia, J. L. Qu, J. Y. Wang, J. B. Sun, Z. H. Zhou, X. S. Xu, C. W. Lim
Summary: This study investigates the influence of local thinning thickness defects on the buckling of cylindrical shells. A static buckling model is established based on the Hamiltonian system, and the complete symplectic eigensolutions are superimposed to derive the buckling modes of the cylindrical shell with defects. The influence of different defect shapes on the shell's buckling is analyzed by constraining the defect volume, and it is concluded that defects of exponential function are more harmful.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Physics, Applied
Hai-Yang Ma, Dandan Guan, Shiyong Wang, Yaoyi Li, Canhua Liu, Hao Zheng, Jin-Feng Jia
Summary: This letter proposes a novel approach for realizing the braiding operations of Majorana zero modes in topological superconductors, by building arrays of electrically controllable pinning centers beneath the thin film instead of on top. This method increases the braiding rate and enables electrically controllable braiding, paving the way towards large-scale topological quantum computation.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Xutao Wang, Ningning Liu, Yanfu Wu, Yueqiao Qu, Wenxuan Zhang, Jinyue Wang, Dandan Guan, Shiyong Wang, Hao Zheng, Yaoyi Li, Canhua Liu, Jinfeng Jia
Summary: Metal-intercalated bilayer graphene has a high density of states near the Fermi energy, and thus is expected to exhibit enhanced strong correlation effect and superconductivity. By using a scanning tunneling microscope, researchers observed the superconducting energy gap and diamagnetic response in Ca-intercalated bilayer graphene, revealing strong coupling superconductivity and an isotropic s-wave superconductor.
Article
Physics, Applied
Ningning Liu, Gang Yao, Yueqiao Qu, Xutao Wang, Jinyue Wang, Wenxuan Zhang, Mingchao Duan, Dan-Dan Guan, Shiyong Wang, Hao Zheng, Yao-Yi Li, Canhua Liu, Jin-Feng Jia
Summary: The two-coil mutual inductance (TCMI) technique is used to calculate the magnetic penetration depth lambda in a superconducting film. The validity of different numerical models with various film geometries is investigated and it is found that the film size should be at least three times larger than the coil size for accurate results. For rectangular films with comparable widths to the coil size, circular and square film geometries can also be used to obtain similar lambda values. The choice of numerical models does not affect the temperature dependence calculation of lambda.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Gucheng Zhu, Yashi Jiang, Ying Wang, Bing-Xin Wang, Yuqiang Zheng, Yufeng Liu, Li-Xia Kang, Zhanbo Li, Dandan Guan, Yaoyi Li, Hao Zheng, Canhua Liu, Jinfeng Jia, Tao Lin, Pei-Nian Liu, Deng-Yuan Li, Shiyong Wang
Summary: A group of nitrogen-doped nanographenes (N-NGs) with atomic precision are fabricated on Au(111) through a combination of reactions, and the presence of collective quantum magnetism in N-NGs is revealed through high-resolution scanning probe microscopy measurements. The mechanism of magnetic exchange interaction of N-NGs is also compared with their pure hydrocarbon counterparts. These findings demonstrate the possibility of bottom-up synthesis of ordered quantum phases through the utilization of N-NGs to fabricate low-dimensional extended graphene nanostructures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Willem O. Tromp, Tjerk Benschop, Jian-Feng Ge, Irene Battisti, Koen M. Bastiaans, Damianos Chatzopoulos, Amber H. M. Vervloet, Steef Smit, Erik van Heumen, Mark S. Golden, Yinkai Huang, Takeshi Kondo, Tsunehiro Takeuchi, Yi Yin, Jennifer E. Hoffman, Miguel Antonio Sulangi, Jan Zaanen, Milan P. Allan
Summary: Superconductivity in high-doped cuprate superconductors is found to be qualitatively different from conventional mean-field theory, as the superfluid density vanishes when the transition temperature goes to zero, which contradicts expectations from Bardeen-Cooper-Schrieffer theory. Scanning tunnelling spectroscopy measurements reveal the emergence of nanoscale superconducting puddles in a metallic matrix, driven by gap filling instead of gap closing, indicating that the breakdown of superconductivity is not caused by diminishing pairing interaction.
Article
Multidisciplinary Sciences
Jian-Feng Ge, Koen M. Bastiaans, Damianos Chatzopoulos, Doohee Cho, Willem O. Tromp, Tjerk Benschop, Jiasen Niu, Genda Gu, Milan P. Allan
Summary: The authors use local shot noise spectroscopy to investigate the charge transfer characteristics of zero-energy bound states in superconducting vortices and rule out the presence of impurity states. This study paves the way for investigating exotic states in vortex cores and future Majorana devices.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
J. Qu, X. Han, S. Sakamoto, C. J. Jia, J. Liu, H. Li, D. Guan, Y. -J. Zeng, M. Schuler, P. S. Kirchmann, B. Moritz, Z. Hussain, T. P. Devereaux, Z. -X Shen, J. A. Sobota
Summary: Spin-orbit coupling is the foundation for quantum materials with non-trivial topology and potential spintronics applications. The Rashba interaction is a representative model of spin-orbit interactions, and BiTeX (X = Cl, Br, I) semiconductors have been identified as exemplary Rashba materials. However, a detailed investigation of their spin textures and their relationship to local crystal symmetry is currently lacking. In this study, we directly image the spin texture of surface states of BiTeCl and find deviations from ideal behavior, including spin-polarization reversal near the Fermi level. These effects are described by higher-order contributions to the canonical Rashba model.
NPJ QUANTUM MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yu Liu, Can Li, Fu-Hua Xue, Wei Su, Ying Wang, Haili Huang, Hao Yang, Jiayi Chen, Dandan Guan, Yaoyi Li, Hao Zheng, Canhua Liu, Mingpu Qin, Xiaoqun Wang, Rui Wang, Deng-Yuan Li, Pei-Nian Liu, Shiyong Wang, Jinfeng Jia
Summary: By engineering sublattice imbalance, atomically precise S = 1/2 magnetic nanographenes were fabricated on Pb(111) surface, and a quantum phase transition was observed.
Article
Instruments & Instrumentation
Xue Han, Jason Qu, Shoya Sakamoto, Dongyu Liu, Dandan Guan, Jin Liu, Hui Li, Costel R. Rotundu, Nord Andresen, Chris Jozwiak, Zahid Hussain, Zhi-Xun Shen, Jonathan A. Sobota
Summary: This paper introduces a spin-ARPES setup based on time-of-flight spectroscopy and an electrostatic deflector mode for mapping spin-resolved band structures without sample rotation. The functionality of the setup is demonstrated by presenting spin-resolved spectra of the topological insulator Bi2Te3 and describing the spectrum calibrations based on numerical simulations. Implementing the deflector mode minimizes the need for sample rotation and improves the overall efficiency of experiments on small or inhomogeneous samples.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Multidisciplinary Sciences
Yong Zhong, Cheng Peng, Haili Huang, Dandan Guan, Jinwoong Hwang, Kuan H. Hsu, Yi Hu, Chunjing Jia, Brian Moritz, Donghui Lu, Jun-Sik Lee, Jin-Feng Jia, Thomas P. Devereaux, Sung-Kwan Mo, Zhi-Xun Shen
Summary: This paper reports the thickness-dependent ferromagnetism in epitaxially grown Cr2Te3 thin films and investigates the evolution of the underlying electronic structure using various approaches. It is observed that there is a ferromagnetic transition from Stoner to Heisenberg type in the atomically thin limit.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Kai Liu, Jian Zheng, Yating Sha, Bosai Lyu, Fengping Li, Youngju Park, Yulu Ren, Kenji Watanabe, Takashi Taniguchi, Jinfeng Jia, Weidong Luo, Zhiwen Shi, Jeil Jung, Guorui Chen
Summary: Interactions among charge carriers in graphene can lead to the spontaneous breaking of multiple degeneracies. In this study, the stacking orders of tetralayer graphene devices were determined using near-field infrared imaging. Through quantum transport measurements, a range of spontaneous broken-symmetry states and their transitions were observed, which could be finely tuned by carrier density and electric displacement field. These findings highlight the potential of multilayer graphene as a platform for investigating broken symmetries.
NATURE NANOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Peng Wu, Kang Xia, Kunling Peng, Takashi Honda, Kazutaka Ikeda, Fengguang Liu, Pierre Vallobra, Fengren Fan, Jiuhui Song, Deming Zhang, Fanghang Yu, Jianjun Ying, Fengfeng Zhu, Toshiya Otomo, Takashi Kamiyama, Weisheng Zhao
Summary: Recently, SnS has been identified as a promising thermoelectric material due to its environmentally friendly and earth abundant elements. Through systematic studies of crystal structures and lattice vibrations using neutron total scattering, Raman scattering measurements, and first-principle calculations, researchers observed a structural transition and lattice anharmonicity in SnS. Experimental evidence and frozen phonon calculations confirmed the presence of quartic anharmonicity potential in high-energy optical modes vibrating along the b axis, contributing to a better understanding of thermal conduction in SnS for enhancing its thermoelectric performance.
Article
Materials Science, Multidisciplinary
Li-Chuan Zhang, Fengfeng Zhu, Dongwook Go, Fabian R. Lux, Flaviano Jose dos Santos, Samir Lounis, Yixi Su, Stefan Bluegel, Yuriy Mokrousov
Summary: This paper demonstrates the distinction of magnitudes of Dzyaloshinskii-Moriya and Kitaev interactions in two-dimensional materials, with a focus on magnonic transport properties. It reveals nontrivial magnonic topological properties in honeycomb ferromagnets and the significant impact of a magnetic field on magnonic topological transport properties.
