Article
Chemistry, Physical
T. T. Saraiva, L. I. Baturina, A. A. Shanenko
Summary: Recent research has shown that the pair-exchange coupling between quasi-one-dimensional (Q1D) bands and conventional higher-dimensional bands in a multiband superconducting material can lead to the formation of a robust aggregate pair condensate, even with the presence of nearly shallow higher-dimensional bands. This sheds new light on the strong superconducting state observed in chain-like-structured superconducting materials A(2)Cr(3)As(3) (A = K, Rb, Cs).
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Junzhang Ma, Simin Nie, Xin Gui, Muntaser Naamneh, Jasmin Jandke, Chuanying Xi, Jinglei Zhang, Tian Shang, Yimin Xiong, Itzik Kapon, Neeraj Kumar, Yona Soh, Daniel Gosalbez-Martinez, Oleg Yazyev, Wenhui Fan, Hannes Huebener, Umberto De Giovannini, Nicholas Clark Plumb, Milan Radovic, Michael Andreas Sentef, Weiwei Xie, Zhijun Wang, Christopher Mudry, Markus Mueller, Ming Shi
Summary: Using angle-resolved photoemission spectroscopy, the authors detected mobile bound states of excitons in quasi-one-dimensional metallic TaSe3, providing evidence for the elusive exciton mobility in metals.
Article
Materials Science, Multidisciplinary
Yang Zhang, Ling-Fang Lin, Gonzalo Alvarez, Adriana Moreo, Elbio Dagotto
Summary: This study investigates the magnetic and electronic properties of the iron-based compound Ba2FeS3, revealing a robust staggered AFM region in the chain direction and an orbital selective Mott phase at intermediate Hubbard U coupling strengths. The system exhibits Mott insulator characteristics at very large U/W, with two half-filled and one doubly occupied orbitals.
Article
Materials Science, Multidisciplinary
Wen-He Jiao, Shaozhu Xiao, Bin Li, Chunqiang Xu, Xiao-Meng Xie, Hang-Qiang Qiu, Xiaofeng Xu, Yi Liu, Shi-Jie Song, Wei Zhou, Hui-Fei Zhai, X. Ke, Shaolong He, Guang-Han Cao
Summary: The study reports on the unique properties of TaPtTe5 crystals, which exhibit anisotropic magnetoresistance and nonlinear Hall effect at low temperatures, indicating a nontrivial band topology.
Article
Chemistry, Multidisciplinary
Yulu Liu, Ruoyu Chen, Zheneng Zhang, Marc Bockrath, Chun Ning Lau, Yan-Feng Zhou, Chiho Yoon, Sheng Li, Xiaoyuan Liu, Nikhil Dhale, Bing Lv, Fan Zhang, Kenji Watanabe, Takashi Taniguchi, Jianwei Huang, Ming Yi, Ji Seop Oh, Robert J. Birgeneau
Summary: We report the observation of unconventional band topology in exfoliated alpha-Bi4I4 field effect transistors and provide evidence for its origin. Our results indicate the presence of multiple gate-tunable boundary channels in this one-dimensional material, which may mediate topological superconductivity.
Article
Chemistry, Multidisciplinary
Ziga Gosar, Tina Arh, Kevin Jaksetic, Andrej Zorko, Wenhao Liu, Hanlin Wu, Chennan Wang, Hubertus Luetkens, Bing Lv, Denis Arcon
Summary: Quasi-one-dimensional electron systems exhibit instability towards long-range ordered phases at low temperatures. In this study, muon spin rotation and relaxation (& mu;SR) were used to investigate the superconducting state in Rb2Mo3As3, which has one of the highest critical temperatures Tc = 10.4 K among quasi-one-dimensional superconductors. The results show stronger damping below Tc due to the formation of a vortex lattice. Comparison of different models suggests that the s-wave scenario provides the best fit, but with an anomalously small superconducting gap ⠁0/Tc ratio of 2 ⠁0/kBTc = 2.74(1). However, the nodal p-wave or d-wave scenarios cannot be ruled out based on slightly worse fits, yielding more realistic ratios of 2 ⠁0/kBTc = 3.50(2) and 2 ⠁0/kBTc = 4.08(1), respectively.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Crystallography
Yi Zhao, Jun Hou, Yang Fu, Cuiying Pei, Jianping Sun, Qi Wang, Lingling Gao, Weizheng Cao, Changhua Li, Shihao Zhu, Mingxin Zhang, Yulin Chen, Hechang Lei, Jinguang Cheng, Yanpeng Qi
Summary: The electronic transport properties of PdTeI are found to be significantly affected by external pressure, resulting in the emergence of superconductivity accompanied by amorphization of the material.
Article
Materials Science, Multidisciplinary
Soma Yoshida, Keiji Yada, Yukio Tanaka
Summary: In this study, the superconducting instability of a quasi-one-dimensional lattice in the Hubbard model was examined using the random-phase approximation (RPA) and the fluctuation exchange (FLEX) approximation. It was found that a spin-singlet pair density wave (PDW singlet) with a center-of-mass momentum of 2k(F) can be stabilized in certain conditions, and the obtained pair is a mixture of even-frequency and odd-frequency singlet components without nodal lines on the Fermi surface. The PDW-singlet state is more favorable than RPA when self-energy correction is introduced in the FLEX approximation.
Article
Materials Science, Multidisciplinary
Youhei Iida, Masashi Sawada, Yoshiaki Sasaki, Tomoaki Tsuchiya, Takaaki Minamidate, Noriaki Matsunaga, Atsushi Kawamoto, Kazushige Nomura
Summary: Studies conducted on the quasi-one-dimensional organic conductor (DMET-TTF)(2)AuBr2 at ambient pressure revealed unique electronic and magnetic behaviors, including temperature-dependent resistivity, magnetic susceptibility, and nuclear magnetic resonance characteristics. These features reflect the interplay between antiferromagnetic transition, magnetic moment amplitude, and chain-like structure.
Article
Materials Science, Multidisciplinary
Si Min Chan, B. Gremaud, G. G. Batrouni
Summary: This study investigates the superconducting and pairing properties of the attractive Hubbard model in two quasi-one-dimensional topological lattices, revealing several key findings.
Article
Nanoscience & Nanotechnology
Man Kit Cheng, Cheuk Yin Ng, Sui Lun Ho, Omargeldi Atanov, Wai Ting Tai, Jing Liang, Rolf Lortz, Iam Keong Sou
Summary: A top-down approach is used to fabricate 1D nanowires or nanoribbons of Bi2Te3/Fe1+yTe heterostructures, showing intact structure and preserved interfacial superconductivity. The electrical transport and Andreev reflection point contact spectroscopy experiments confirm the twin-gap structure and enhanced fluctuation effects in the nanowires. The presence of an Andreev bound state and the possible topological nature of superconductivity are discussed, along with the emerging ferromagnetism in the Fe1+yTe layer.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
C. Pei, W. Shi, Y. Zhao, L. Gao, J. Gao, Y. Li, H. Zhu, Q. Zhang, N. Yu, C. Li, W. Cao, S. A. Medvedev, C. Felser, B. Yan, Z. Liu, Y. Chen, Z. Wang, Y. Qi
Summary: This study demonstrates that the compound (NbSe4)(2)I is a rare example of a chiral Weyl semimetal material, with symmetry-related Weyl points that can be tuned by pressure and accompanied by superconductivity. Despite the amorphization of the iodine sub-lattice under high pressure, the one-dimensional NbSe4 chains in (NbSe4)(2)I remain intact and provide a superconducting channel.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Long Chen, Linlin Zhao, Xiaole Qiu, Qinghua Zhang, Kai Liu, Qisheng Lin, Gang Wang
Summary: The new manganese-based quasi-one-dimensional material RbMn6Bi5 exhibits unique crystal structure and physical properties, including antiferromagnetism. It shows significant resistivity anisotropy and is confirmed to be a quasi-one-dimensional metal with possible helical antiferromagnetic configuration.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Jin-Ke Bao, Huibo Cao, Matthew J. Krogstad, Keith M. Taddei, Chenfei Shi, Shixun Cao, Saul H. Lapidus, Sander van Smaalen, Duck Young Chung, Mercouri G. Kanatzidis, Stephan Rosenkranz, Omar Chmaissem
Summary: This research utilizes neutron diffraction to elucidate the exact nature of the previously unknown antiferromagnetic ground state of KMn6Bi5 and discovers transverse incommensurate spin density waves for the Mn atoms. The study also reveals a strong real space coupling between charge density waves and spin density waves, and observes a significant magnetoelastic effect during the antiferromagnetic transition.
Article
Materials Science, Multidisciplinary
Wen-He Jiao, Shaozhu Xiao, Shi-Ju Zhang, Wu-Zhang Yang, Xiao-Meng Xie, Yi Liu, Ji-Yong Liu, Shi-Jie Song, Wei Liu, Zhi Ren, Guang-Han Cao, Xiaofeng Xu, Shaolong He
Summary: We report the crystal growth, structural characterization, and physical properties of an off-stoichiometric van der Waals telluride Ta1.2Os0.8Te4, which is isostructural with the noncentrosymmetric WTe2, a prototypical type-II Weyl semimetal. Transport measurements have been carried out in magnetic fields up to 9 T. A low-temperature resistivity upturn is observed along all three crystallographic directions at zero field.
Article
Materials Science, Ceramics
Wuzhang Yang, Guorui Xiao, Qinqing Zhu, Yanwei Cui, Shijie Song, Guang-Han Cao, Zhi Ren
Summary: This study reports the structural and physical properties of a molybdenum diboride material prepared by arc melting method. The material is found to exhibit superconductivity in the AlB2-type phase, and the superconducting transition temperature is influenced by the electron-phonon interaction.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Qinqing Zhu, Guorui Xiao, Yanwei Cui, Wuzhang Yang, Shijie Song, Guang-Han Cao, Zhi Ren
Summary: We investigate the properties of (MoReRu)(1-2x)/3(PdPt)x and carbon-added (MoReRu)(1-2x)/3(PdPt)xCy high entropy alloys. The addition of carbon induces a transformation from a hexagonal close-packed (hcp) structure to a face-centered cubic (fcc) structure. Both hcp and fcc alloys show superconductivity, with the transition temperature (Tc) controlled by the electron-phonon coupling strength. Our findings suggest that the structural transformation due to carbon addition is common in multi-component alloys with an hcp structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
Zachary Nix, Jiyong Zhao, Esen E. Alp, Yuming Xiao, Dongzhou Zhang, Guang-Han Cao, Yogesh K. Vohra, Wenli Bi
Summary: Eu(Fe0.75Ru0.25)(2)As-2 is a system with coexistence of superconductivity and ferromagnetism. By conducting synchrotron Mossbauer and x-ray absorption spectroscopy experiments, the magnetic ordering temperature, valence state of Eu ions, and lattice structure are found to be affected by pressure, providing guidance for further investigation of the interplay of superconductivity and magnetism.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Guorui Xiao, Qinqing Zhu, Wuzhang Yang, Yanwei Cui, Shijie Song, Guang-Han Cao, Zhi Ren
Summary: This study reports the structural transformation observed in a superconducting high-entropy alloy (HEA) by adding carbon. The addition of carbon leads to the transformation from a centrosymmetric structure to a noncentrosymmetric beta-Mn type structure in the HEA. The transformed HEA exhibits higher critical temperature and an upper critical field approaching the limit. The structural transformation is attributed to the decrease in valence electron concentration, increase in lattice distortion, and mixing entropy caused by carbon addition.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shulun Han, Chi Sin Tang, Linyang Li, Yi Liu, Huimin Liu, Jian Gou, Jing Wu, Difan Zhou, Ping Yang, Caozheng Diao, Jiacheng Ji, Jinke Bao, Lingfeng Zhang, Mingwen Zhao, Milorad V. Milosevic, Yanqun Guo, Lijun Tian, Mark B. H. Breese, Guanghan Cao, Chuanbing Cai, Andrew T. S. Wee, Xinmao Yin
Summary: The recently discovered kagome topological superconductor AV(3)Sb(5) (A = K, Rb, Cs) has a unique structural motif that can host diverse topologically non-trivial phenomena. It remains unclear how atomic-level properties and many-body effects contribute to these symmetry-breaking phenomena. In this study, the role of V3d-Sb5p orbital hybridization in mediating the CDW phase transition in CsV3Sb5 is reported. The results highlight the critical role of Sb orbitals and establish orbital hybridization as the direct mediator of the CDW states and structural transition dynamics in kagome unconventional superconductors.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Guorui Xiao, Wuzhang Yang, Qinqing Zhu, Shijie Song, Guang-Han Cao, Zhi Ren
Summary: A series of new Cr5+xMo35xW12Re35Ru13C20 high-entropy alloys have been synthesized and characterized, showing bulk superconductivity. The lattice parameter and superconducting transition temperature vary with different compositions.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Bin Liu, Wuzhang Yang, Guorui Xiao, Qinqing Zhu, Shijie Song, Guang-Han Cao, Zhi Ren
Summary: In this study, two new high-entropy silicides, (Nb0.1Mo0.3W0.3Re0.2Ru0.1)(5)Si-3 and (Nb0.2Mo0.3W0.3Re0.1Ru0.1)(5)Si-3, were synthesized and their crystal structure and physical properties were characterized. The results showed that both compounds were weakly coupled bulk superconductors with a tetragonal W5Si3-type phase and disordered cation distribution. Notably, these high-entropy silicides exhibited higher critical temperatures and the largest B-c2(0)/T-c ratios among superconductors with the same structural type.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Physical
Sitaram Ramakrishnan, Jinke Bao, Claudio Eisele, Bikash Patra, Minoru Nohara, Biplab Bag, Leila Noohinejad, Martin Tolkiehn, Carsten Paulmann, Achim M. Schaller, Toms Rekis, Surya Rohith Kotla, Andreas Schoenleber, Arumugam Thamizhavel, Bahadur Singh, Srinivasan Ramakrishnan, Sander van Smaalen
Summary: Ho2Ir3Si5 belongs to the family of 3D R2Ir3Si5 compounds. It exhibits a first-order charge-density-wave (CDW) transition accompanied by lattice distortion and superlattice reflections. The CDW is caused by Ir-Ir zigzag chains along c. Replacing Lu with magnetic Er or Ho decreases the CDW transition temperature. Ho2Ir3Si5 shows second-order superlattice reflections, indicating an anharmonic modulation wave. The CDW transition affects the magnetic moments of Ho3+ even in the paramagnetic state, and antiferromagnetic (AFM) ordering is suppressed in the single crystal.
CHEMISTRY OF MATERIALS
(2023)
Article
Crystallography
Yi Liu, Jing Li, Shi-Jie Song, Wu-Zhang Yang, Jin-Ke Bao, Wen-He Jiao, Xiao-Feng Xu, Zhi Ren, Guang-Han Cao
Summary: We report the possible coexistence of nontrivial topology and antiferromagnetism in EuCdBi2. X-ray diffraction results show that EuCdBi2 has the same space group as SrMnBi2 and EuMnBi2. Magnetization, electrical transport, and specific heat measurements indicate an antiferromagnetic transition at 20 K. The large positive magnetoresistance is considered to come from Dirac bands, and Hall measurements show a crossover of Hall resistance from negative to positive values at around 150 K. EuCdBi2 could serve as a new platform to study the interplay of topological bands and antiferromagnetic order.
Article
Chemistry, Multidisciplinary
Shi-Jie Song, Jia-Yi Lu, Qin-Qing Zhu, Zhi Ren, Guang-Han Cao
Summary: Na2Fe2S2O exhibits an anti-K2NiF4-type structure with [Fe2S2O]2- block layers. It shows antiferromagnetic insulating behavior with a Neel temperature of 91.5 K. The Fe-S bond distance is found to be the main factor determining the Neel temperature, and short-range spin correlations are observed above the Neel temperature.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Zhenyuan Zeng, Xiaoyan Ma, Si Wu, Hai-Feng Li, Zhen Tao, Xingye Lu, Xiao-hui Chen, Jin-Xiao Mi, Shi-Jie Song, Guang-Han Cao, Guangwei Che, Kuo Li, Gang Li, Huiqian Luo, Zi Yang Meng, Shiliang Li
Summary: This study investigates the magnetic properties of YCu3(OH)(6)Br-2[Br1-x(OH)(x)] and finds that its magnetic ground state is consistent with the proposed candidate ground state in the two-dimensional kagome Heisenberg antiferromagnetic system.
Article
Materials Science, Multidisciplinary
Qinqing Zhu, Guorui Xiao, Yanwei Cui, Wuzhang Yang, Siqi Wu, Guang-han Cao, Zhi Ren
Summary: We report the discovery of a new noncentrosymmetric superconductor, W4IrC1-x, which adopts a cubic beta-Mn type structure. The stability of this compound is affected by interstitial carbon and annealing or varying the W/Ir ratio. It is found that W4IrC and W4IrC0.8 are weakly coupled type-II superconductors with high zero-temperature upper critical fields.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Physics, Multidisciplinary
Qianhui Xu, Yi Liu, Sijie Hao, Jiahui Qian, Cheng Su, Chin-Wei Wang, Thomas Hansen, Zhendong Fu, Yixi Su, Wei Li, Guang-Han Cao, Yinguo Xiao, Wentao Jin
Summary: The ground-state magnetic structures of Eu2+ spins in RbEu(Fe1-xNix)(4)As-4 superconductors have been studied using neutron powder diffraction measurements. It is observed that the magnetic propagation vector of the Eu sublattice diminishes with increasing Ni doping, leading to a reduction in the rotation angle between neighboring Eu layers. The magnetic structure transitions from a helical modulation to a collinear ferromagnetic structure as the superconductivity is suppressed.
PHYSICAL REVIEW RESEARCH
(2022)
