Article
Materials Science, Multidisciplinary
K. Komedera, J. Gatlik, A. Blachowski, J. Zukrowski, T. J. Sato, D. Legut, U. D. Wdowik
Summary: The electron structure characteristics of BaFe2(As1-xPx)(2) compounds at different doping concentrations were investigated, revealing changes in properties such as spin-density wave, spin-nematic phase, and superconducting transition under different doping concentrations.
Article
Physics, Condensed Matter
K. A. M. Hasan Siddiquee, Riffat Munir, Charuni Dissanayake, Xinzhe Hu, Swapnil Yadav, Yasumasa Takano, Eun Sang Choi, Duy Le, Talat S. Rahman, Yasuyuki Nakajima
Summary: Investigations on the topological semimetal CaSn3 reveal that the Fermi surfaces enclose an odd number of time-reversal-invariant momenta, meeting one of the criteria for realizing topological superconductivity. The observed quantum oscillations frequencies and nonzero Berry phases further support the nontrivial topological nature of CaSn3.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Juuso Manninen, Antti Laitinen, Francesco Massel, Pertti Hakonen
Summary: In this work, we investigate the dynamics of a graphene Corbino disk supported by a gold mechanical resonator under the influence of a magnetic field. We find that our graphene/gold mechanical structure exhibits a nontrivial resonance frequency dependence on the applied magnetic field, which indicates the presence of the de Haas-van Alphen effect in the graphene Corbino disk. Our detection scheme, based on the mechanical resonances of the gold structure, is material-independent and can be used for dHvA measurements on any conducting 2D material. This scheme is expected to be a valuable tool for studying centrosymmetric transition metal dichalcogenide (TMD) crystals and exploring hidden magnetization and interaction effects.
Article
Materials Science, Multidisciplinary
K. Goetze, B. Bergk, O. Ignatchik, A. Polyakov, I. Kraft, V. Lorenz, H. Rosner, T. Foerster, S. Seiro, I. Sheikin, J. Wosnitza, C. Geibel
Summary: In this study, magnetic-torque experiments and density functional theory band-structure calculations were used to investigate the magnetic properties and Fermi surface structure of EuIr2Si2. The results showed a temperature-dependent, noninteger europium valence at low temperatures. Furthermore, an increase in effective mass with magnetic field was observed.
Article
Physics, Multidisciplinary
Dai Aoki, Hironori Sakai, Petr Opletal, Yoshifumi Tokiwa, Jun Ishizuka, Youichi Yanase, Hisatomo Harima, Ai Nakamura, Dexin Li, Yoshiya Homma, Yusei Shimizu, Georg Knebel, Jacques Flouquet, Yoshinori Haga
Summary: This study reports the first observation of the de Haas-van Alphen (dHvA) effect in the novel spin-triplet superconductor UTe2. The researchers found that UTe2 has two types of cylindrical Fermi surfaces with strong corrugation, and the angular dependence of the dHvA frequencies is in good agreement with the calculated results.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Physical
Chengxu Liu, Bin Li, Yongheng Ge, Chuanying Xi, Yi Liu, Chunqiang Xu, Qi Lu, Yunlong Li, Hang-Qiang Qiu, Qin-Qing Zhu, Yu-Ke Li, Zhi Ren, Ziming Zhu, Dong Qian, Xianglin Ke, Xiaofeng Xu, Wen-He Jiao
Summary: The search for quantum materials with symmetry-protected topological states has attracted significant research interest due to their intriguing physical properties and potential technological applications. In this study, the researchers report on the magnetotransport, de Haas-van Alphen oscillations, and first-principles calculations of Cu3Sn, a stannide isostructural to the recently reported topological semimetal Ag3Sn. The experimental results show quasi-linear magnetoresistance and clear dHvA oscillations, indicating possible nontrivial band topology and the presence of topological Dirac fermions in Cu3Sn.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
Souvik Sasmal, Gourav Dwari, Bishal Baran Maity, Vikas Saini, A. Thamizhavel, Rajib Mondal
Summary: Anisotropic transport and quantum oscillations were studied on a high-quality CoSi single crystal grown by the Czochralski method. The dominant scattering mechanism was found to be electron-electron scattering, and the electrons were identified as the majority carriers with no electron-hole compensation. The effective masses and Dingle temperatures were calculated from the oscillation data.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Biochemistry & Molecular Biology
Ion Ivan, Alina M. Ionescu, Daniel N. Crisan, Adrian Crisan
Summary: Understanding the vortex matter and dynamics is crucial for practical applications of superconductors. We have investigated the vortex glass-vortex liquid phase transitions in CaKFe4As4 and BaFe2(As0.68P0.32)(2) single crystals using multi-harmonic susceptibility studies. Our findings suggest that the phase transition can be treated as a melting process according to Lindemann's approach, even in iron-based superconductors. The experimental data are consistent with a temperature-dependent London penetration depth given by a 3D XY fluctuations model.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Keshav Shrestha, Mengzhu Shi, Thinh Nguyen, Duncan Miertschin, Kaibao Fan, Liangzi Deng, David E. Graf, Xianhui Chen, Ching -Wu Chu
Summary: We studied the kagome superconductor RbV3Sb5 using torque magnetometry and found clear de Haas-van Alphen (dHvA) oscillations with eight frequencies ranging from approximately 150 to 3000 T. Angle-dependent measurements showed that all frequencies followed a 1/cos theta dependence, indicating two-dimensional Fermi surfaces. We also calculated the Berry phase and estimated the effective mass of charge carriers in RbV3Sb5, finding it to be heavier than other topological insulators. These findings on high frequencies and Fermi surfaces are crucial for understanding the properties of RbV3Sb5 and its relationship with other materials.
Article
Physics, Multidisciplinary
Yoshichika Onuki, Kosuke Karube, Dai Aoki, Ai Nakamura, Yoshiya Homma, Tatsuma D. Matsuda, Yoshinori Haga, Tetsuya Takeuchi
Summary: A Eu-divalent antiferromagnet EuAs3 exhibits six different magnetic phases in the H-T phase diagram. These multiple magnetic phases are rare among Eu compounds. The anomalous Hall resistivity is found to be large, particularly in Eu(As0.97P0.03)(3). Additionally, the semimetal EuAs3 has small and closed electron and hole Fermi surfaces with equal volumes.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2023)
Article
Materials Science, Multidisciplinary
K. Shrestha, R. Chapai, Bal K. Pokharel, D. Miertschin, T. Nguyen, X. Zhou, D. Y. Chung, M. G. Kanatzidis, J. F. Mitchell, U. Welp, Dragana Popovic, D. E. Graf, B. Lorenz, W. K. Kwok
Summary: In this study, the normal state Fermi-surface properties of the kagome superconductor CsV3Sb5 were investigated. The results revealed the presence of two-dimensional Fermi surfaces with nontrivial topology, which is crucial for exploring unconventional superconductivity and other properties of CsV3Sb5.
Article
Materials Science, Multidisciplinary
Dai-Nam Le, Van-Hoang Le, Pinaki Roy
Summary: This study investigates the effects of anisotropy of Fermi velocity on the structural Landau levels and de Haas-van Alphen quantum oscillations in a magnetized graphene sheet under the influence of linear uniaxial tensile strain and/or stress, coupled with an applied electrostatic voltage. The research also discusses the impact of the direction of the applied strain on the electronic properties of graphene.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Physics, Multidisciplinary
C. S. A. Muller, M. R. van Delft, M. Breitkreiz, T. Khouri, L. M. Schoop, A. Carrington, N. E. Hussey, S. Wiedmann
Summary: In this study, the structure of the high-frequency magnetic breakdown spectrum in HfSiS was revealed through a de Haas-van Alphen quantum oscillation study, and a number of breakdown orbits that were previously not observed in transport experiments were identified.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Boris Khannanov, Evgeny Golovenchits, Mikhail Shcheglov, Viktoriya Sanina
Summary: This paper presents the results of a study on the magnetic dynamics of Y3Fe5O12 single crystals in the form of plates and spheres of various sizes. The study was conducted at frequencies exceeding 30 GHz, magnetic fields up to 18 kOe, at room temperature, and T = 77 K. It was found that the inhomogeneity of the magnetic state in these samples manifested as 2D local phase separation regions, which formed inside layered domain walls representing superlattices with sizes of 700-900 Å. Depending on the shape and size of the samples, either Landau diamagnetism or de Haas-van Alphen oscillations were observed in the 2D phase separation regions at room temperature and T = 77 K.
Article
Physics, Multidisciplinary
S. R. Julian
Summary: This study revisits the semiclassical theory of quantum oscillations in hybridization-gap insulators, and demonstrates that the physical mechanism behind the oscillations, at T = 0 K, is a sudden change in the diamagnetic moment of each Landau level as it crosses the hybridized region of the valence band.
CANADIAN JOURNAL OF PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
John Cenker, Shivesh Sivakumar, Kaichen Xie, Aaron Miller, Pearl Thijssen, Zhaoyu Liu, Avalon Dismukes, Jordan Fonseca, Eric Anderson, Xiaoyang Zhu, Xavier Roy, Di Xiao, Jiun-Haw Chu, Ting Cao, Xiaodong Xu
Summary: A cryo-strain device capable of applying large, continuous strains to two-dimensional materials enables the reversible tuning of magnetic order and spin-canting process of the magnetic semiconductor CrSBr.
NATURE NANOTECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Daniel Jost, Leander Peis, Ge He, Andreas Baum, Stephan Gepraegs, Johanna C. Palmstrom, Matthias S. Ikeda, Ian R. Fisher, Thomas Wolf, Samuel Lederer, Steven A. Kivelson, Rudi Hackl
Summary: This study shows that marginal Fermi liquid behavior, characterized by scaling properties, can be observed in an Fe-based superconductor tuned through a quantum critical point by chemical substitution or doping. The findings suggest a connection between marginal Fermi liquid behavior and quantum criticality, and imply a contribution from quantum fluctuations to the formation of superconductivity.
COMMUNICATIONS PHYSICS
(2022)
Article
Multidisciplinary Sciences
Faran Zhou, Kyle Hwangbo, Qi Zhang, Chong Wang, Lingnan Shen, Jiawei Zhang, Qianni Jiang, Alfred Zong, Yifan Su, Marc Zajac, Youngjun Ahn, Donald A. Walko, Richard D. Schaller, Jiun-Haw Chu, Nuh Gedik, Xiaodong Xu, Di Xiao, Haidan Wen
Summary: This study reveals the existence of a spin-shear coupling mechanism in van der Waals antiferromagnetic materials, where subtle shear can have a profound effect on magnetic order. Experimental results identify interlayer shear as the primary structural degree of freedom that couples with magnetic order, allowing for ultrafast control of magnetic order through spin-mechanical coupling.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Anna E. Boehmer, Jiun-Haw Chu, Samuel Lederer, Ming Yi
Summary: Electronic nematicity, the spontaneous reduction of rotational symmetry in a crystalline solid driven by an electronic mechanism, is an important phenomenon. Iron-based superconductors provide an ideal material platform for studying this phenomenon, and their nematic phase can be studied using a variety of experimental techniques. The understanding of nematicity is crucial for understanding superconducting pairing and normal-state properties.
Article
Materials Science, Multidisciplinary
Kelly J. J. Neubauer, Feng Ye, Yue Shi, Paul Malinowski, Bin Gao, Keith M. M. Taddei, Philippe Bourges, Alexandre Ivanov, Jiun-Haw Chu, Pengcheng Dai
Summary: We use neutron scattering to investigate the spin dynamics and structures of Co3Sn2-xInxS2 as a function of x, and provide a microscopic understanding of the interplay between the anomalous Hall effect (AHE) and magnetism. Our results show that the spin gap and stiffness contribute to the AHE from Weyl fermions. The magnetic structure evolves from c-axis ferromagnetism to a canted antiferromagnetic structure with reduced c-axis moment and in-plane antiferromagnetic order as x increases. Furthermore, our findings reveal another contribution to the AHE from the noncollinear spins-induced Berry curvature, highlighting the importance of magnetism on transport.
NPJ QUANTUM MATERIALS
(2022)
Article
Physics, Multidisciplinary
Xiaokun Teng, Ji Seop Oh, Hengxin Tan, Lebing Chen, Jianwei Huang, Bin Gao, Jia-Xin Yin, Jiun-Haw Chu, Makoto Hashimoto, Donghui Lu, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, Garrett E. Granroth, Binghai Yan, Robert J. Birgeneau, Pengcheng Dai, Ming Yi
Summary: Electron correlations in quantum materials can lead to emergent orders, such as the topological states found in kagome lattice materials. These emergent orders are a result of the specific electronic band structure associated with the kagome lattice geometry. Various correlated electronic phases, including magnetism and superconductivity, have been discovered in kagome lattice materials. In this study, the authors observe all three electronic signatures of the kagome lattice in FeGe using angle-resolved photoemission spectroscopy and provide evidence for the interplay between magnetism and charge order in this material.
Article
Multidisciplinary Sciences
Jun Cui, Emil Vinas Bostroem, Mykhaylo Ozerov, Fangliang Wu, Qianni Jiang, Jiun-Haw Chu, Changcun Li, Fucai Liu, Xiaodong Xu, Angel Rubio, Qi Zhang
Summary: The research team observed magnon-induced chiral phonons and chirality selective magnon-phonon hybridization in the antiferromagnet FePSe3, which provides new insights for the development of angular momentum-based hybrid phononic and magnonic devices.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jonathan M. DeStefano, Elliott Rosenberg, Olivia Peek, Yongbin Lee, Zhaoyu Liu, Qianni Jiang, Liqin Ke, Jiun-Haw Chu
Summary: This study presents a comprehensive magneto transport study on ScV6Sn6, revealing several anomalous transport phenomena above the CDW ordering temperature. These anomalies can be consistently explained by a progressive decrease in carrier densities with decreasing temperature, suggesting the formation of a pseudogap. The findings suggest the significance of high-temperature CDW fluctuations in determining the normal state electronic properties of ScV6Sn6.
NPJ QUANTUM MATERIALS
(2023)
Article
Physics, Condensed Matter
Ruben Albertini, Salvatore Macis, Andrei A. Ivanov, Alexey P. Menushenkov, Alessandro Puri, Virginia Monteseguro, Boby Joseph, Wei Xu, Augusto Marcelli, Paula Giraldo-Gallo, Ian Randal Fisher, Antonio Bianconi, Gaetano Campi
Summary: In this study, the spatial micro-fluctuations in BaPO units in Ba(Pb-1 Bi-x(x))O-3 crystals were measured using scanning dispersive micro-X-ray absorption near edge structure technique. The results showed substantial differences between the microstrain epsilon and the chemical inhomogeneity x, and different relationships epsilon(x) were observed in samples with different doping levels.
Article
Materials Science, Multidisciplinary
J. A. Galvis, A. Fang, D. Jimenez-Guerrero, J. Rojas-Castillo, J. Casas, O. Herrera, A. C. Garcia-Castro, E. Bousquet, I. R. Fisher, A. Kapitulnik, P. Giraldo-Gallo
Summary: In this paper, we provide a full characterization of the charge density wave (CDW) state in NbTe4 through phonon-structure calculations and scanning tunneling microscopy measurements. Our findings reveal that the CDW in this compound is fully commensurate with the lattice parameters at short range, but discommensurate at long range with the presence of phase-slip domain walls. These results solve a long-standing discussion about the nature of the CDW in these materials and establish a strong foundation for the study of the interplay between this state and other novel quantum electronic states.
Article
Materials Science, Multidisciplinary
Steven A. Kivelson, Akshat Pandey, Anisha G. Singh, Aharon Kapitulnik, Ian R. Fisher
Summary: In this paper, we study the critical behavior of incommensurate unidirectional charge-density-wave ordering in a weakly orthorhombic system subject to uniaxial strain, which serves as an experimentally significant example of U (1) x U (1) multicriticality. Depending on microscopic details, the phase diagram can exhibit qualitatively different structures, such as vestigial metanematic critical point, a pair of tricritical points, decoupled tetracritical point, or (at least at mean-field level) bicritical point. We analyze the emergent symmetries in the critical regime and find that in some cases, an emergent Z2 order parameter symmetry can be present.
Article
Materials Science, Multidisciplinary
Sabin Regmi, Tharindu Fernando, Yuzhou Zhao, Anup Pradhan Sakhya, Gyanendra Dhakal, Iftakhar Bin Elius, Hector Vazquez, Jonathan D. Denlinger, Jihui Yang, Jiun-Haw Chu, Xiaodong Xu, Ting Cao, Madhab Neupane
Summary: This study presents spectroscopic evidence of flat and weakly dispersing bands in the breathing-kagome semiconductor Nb3I8, highlighting the sensitivity of these bands to the polarization of the incident photon beam. The findings contribute to understanding the interaction of geometry and electron correlations in two-dimensional materials.
COMMUNICATIONS MATERIALS
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
John Cenker, Shivesh Sivakumar, Kaichen Xie, Geoffrey Diederich, Zhaoyu Liu, Avalon H. Dismukes, Daniel G. Chica, Xiaoyang Zhu, Xavier Roy, Jiun-Haw Chu, Di Xiao, Ting Cao, Xiaodong Xu
Summary: In this paper, we review recent progress in studying and controlling magneto-exciton coupling in the layered antiferromagnetic semiconductor CrSBr. We found that the magnetic order in this material can be controlled by the application of tensile strain, with a reversible AFM to FM transition occurring at large but experimentally feasible strains. These results establish CrSBr as an exciting platform for harnessing spin-charge-lattice coupling to the 2D limit.
Article
Materials Science, Multidisciplinary
Elliott Rosenberg, Jonathan M. DeStefano, Yucheng Guo, Ji Seop Oh, Makoto Hashimoto, Donghui Lu, Robert J. Birgeneau, Yongbin Lee, Liqin Ke, Ming Yi, Jiun-Haw Chu
Summary: The synthesis and characterization of vanadium-based kagome metal TbV6Sn6 is presented. The material exhibits phase transition behavior and magnetic anisotropy, suggesting the presence of uniaxial ferromagnetism. The study also reveals the nontrivial electronic states emerging from the kagome lattice structure.
Article
Materials Science, Multidisciplinary
Joshua Javier Sanchez, Paul Malinowski, Jong-Woo Kim, Philip Ryan, Jiun-Haw Chu
Summary: In this paper, the thermodynamic description of electronic nematicity in iron pnictide materials is reviewed using Landau free energy, and a quantitative relationship between three thermodynamic quantities is derived.
