Charge order and superconductivity in kagome materials
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In this article, the superconductivity and ordered states formed by interactions have been observed in a family of kagome materials with vanadium atoms, and the open problems for this field are discussed.Abstract:
Lattice geometry, topological electron behaviour and the competition between different possible ground states all play a role in determining the properties of materials with a kagome lattice structure. In particular, the compounds KV3Sb5, CsV3Sb5 and RbV3Sb5 all feature a kagome net of vanadium atoms. These materials have recently been shown to exhibit superconductivity at low temperature and an unusual charge order at high temperature, revealing a connection to the underlying topological nature of the band structure. We highlight these discoveries, place them in the context of wider research efforts in topological physics and superconductivity, and discuss the open problems for this field. Superconductivity and ordered states formed by interactions—both of which could be unconventional—have recently been observed in a family of kagome materials.read more
Citations
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Discovery of charge density wave in a kagome lattice antiferromagnet
Xiaokun Teng,Lebing Chen,Feng Ye,Elliott W. Rosenberg,Zhaoyu Liu,Jiaxin Yin,Yu Xiao Jiang,Ji Seop Oh,M. Z. Hasan,Kelly J. Neubauer,B. Gao,Ya-Ping Xie,Makoto Hashimoto,Donghui Lu,Chris Jozwiak,Aaron Bostwick,Eli Rotenberg,Robert J. Birgeneau,Jiun-Haw Chu,Ming Yi,Pengcheng Dai +20 more
TL;DR: In this paper , the antiferromagnetic (AFM) ordered phase of kagome lattice FeGe was shown to have a charge density wave (CDW) at wavevectors identical to that of AV3Sb5.
Journal ArticleDOI
Switchable chiral transport in charge-ordered kagome metal CsV3Sb5
Chunyu Guo,Carsten Putzke,Sofia Konyzheva,Xiangwei Huang,Martin Gutierrez-Amigo,Ion Errea,Dongfeng Chen,Maia G. Vergniory,Claudia Felser,Mark H. Fischer,Titus Neupert,Philip J. W. Moll +11 more
TL;DR: In this article , it was shown that the chirality is set by the out-of-plane field component and that a transition from left-to right-handed transport can be induced by changing the field sign.
Journal ArticleDOI
Topological kagome magnets and superconductors.
Jiaxin Yin,Biao Lian,M. Z. Hasan +2 more
TL;DR: In this paper , the fundamental concepts of a kagome lattice, realizations of Chern and Weyl topological magnetism, flat-band many-body correlations, and unconventional charge-density waves and superconductivity are reviewed.
Journal ArticleDOI
Tunable unconventional kagome superconductivity in charge ordered RbV3Sb5 and KV3Sb5
Zurab Guguchia,Charles Mielke,Debarchan Das,R. Gupta,J. Yin,H. Liu,Qiangwei Yin,Morten Christensen,Zhijun Tu,Chunsheng Gong,Nana Shumiya,Md. Shafayat Hossain,Ts. Gamsakhurdashvili,M. Elender,Pengcheng Dai,A. Amato,Y. Shi,H. Lei,Rafael M. Fernandes,M. Z. Hasan,Hubertus Luetkens,Rustem Khasanov +21 more
TL;DR: In this article , the authors utilized pressure-tuned and ultra-low temperature muon spin spectroscopy to uncover the unconventional nature of superconductivity in RbV 3 Sb 5 and KV 3 sb 5 .
Journal ArticleDOI
Time-reversal symmetry broken by charge order in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">CsV</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Sb</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:math>
Rustem Khasanov,Debarchan Das,Ritu Gupta,Charles Mielke,M. Elender,Qiangwei Yin,Zhijun Tu,Chunsheng Gong,Hechang Lei,Ethan T. Ritz,Rafael M. Fernandes,Turan Birol,Zurab Guguchia,Hubertus Luetkens +13 more
TL;DR: In this paper , a combination of zero-field and high-field muon-spin rotation/relaxation is used to study the signatures of TRSB of the charge order in vanadium-based kagome metals.
References
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Journal ArticleDOI
Cs V 3 Sb 5 : A Z 2 Topological Kagome Metal with a Superconducting Ground State
Brenden R. Ortiz,Samuel M. L. Teicher,Yong Hu,Julia L. Zuo,P. M. Sarte,Emily C. Schueller,A. M. Milinda Abeykoon,M. J. Krogstad,Stephan Rosenkranz,Raymond Osborn,Ram Seshadri,Leon Balents,Junfeng He,Stephen D. Wilson +13 more
TL;DR: The electronic properties of CsV_{3}Sb_{5} are presented, demonstrating bulk superconductivity in single crystals with a T_{c}=2.5 K, and the implications for the formation of unconventional super conductivity in this material are discussed.
Journal ArticleDOI
New kagome prototype materials: Discovery of KV3Sb5,RbV3Sb5, and CsV3Sb5
Brenden R. Ortiz,Brenden R. Ortiz,Lídia C. Gomes,Lídia C. Gomes,Jennifer R. Morey,Michał J. Winiarski,Michał J. Winiarski,Mitchell M. Bordelon,John S. Mangum,Iain W. H. Oswald,Jose A. Rodriguez-Rivera,Jose A. Rodriguez-Rivera,James R. Neilson,Stephen D. Wilson,Elif Ertekin,Elif Ertekin,Tyrel M. McQueen,Eric S. Toberer +17 more
TL;DR: In this paper, a new kagome prototype structure is presented, which is based on vanadium, with the Fermi level in close proximity to several Dirac points.