Superconductivity in the $\mathbb{Z}_2$ kagome metal KV$_3$Sb$_5$
Brenden R. Ortiz,P. M. Sarte,Eric Kenney,Samuel M. L. Teicher,Ram Seshadri,Michael Graf,Stephen D. Wilson +6 more
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TLDR
In this article, the authors reported the observation of bulk superconductivity in single crystals of the two-dimensional kagome metal KV$_3$Sb$_5$.Abstract:
Here we report the observation of bulk superconductivity in single crystals of the two-dimensional kagome metal KV$_3$Sb$_5$. Magnetic susceptibility, resistivity, and heat capacity measurements reveal superconductivity below $T_c = 0.93$K, and density functional theory (DFT) calculations further characterize the normal state as a $\mathbb{Z}_2$ topological metal. Our results demonstrate that the recent observation of superconductivity within the related kagome metal CsV$_3$Sb$_5$ is likely a common feature across the AV$_3$Sb$_5$ (A: K, Rb, Cs) family of compounds and establish them as a rich arena for studying the interplay between bulk superconductivity, topological surface states, and likely electronic density wave order in an exfoliable kagome lattice.read more
Citations
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Unconventional chiral charge order in kagome superconductor KV3Sb5.
Yu-Xiao Jiang,Jiaxin Yin,M. Michael Denner,Nana Shumiya,Brenden R. Ortiz,Gang Xu,Zurab Guguchia,Junyi He,Shafayat Hossain,Xiaoxiong Liu,Jacob Ruff,Linus Kautzsch,Songtian S. Zhang,Guoqing Chang,Ilya Belopolski,Qi Zhang,Tyler A. Cochran,Daniel Multer,Maksim Litskevich,Zijia Cheng,Xian P. Yang,Ziqiang Wang,Ronny Thomale,Titus Neupert,Stephen D. Wilson,M. Zahid Hasan +25 more
TL;DR: In this paper, the authors used high-resolution scanning tunnelling microscopy to discover an unconventional chiral charge order in a kagome material, KV3Sb5, with both a topological band structure and a superconducting ground state.
Journal ArticleDOI
Double Superconducting Dome and Triple Enhancement of T_{c} in the Kagome Superconductor CsV_{3}Sb_{5} under High Pressure.
Ke Chen,N. N. Wang,Qiangwei Yin,Yanhong Gu,Kun Jiang,Zhijun Tu,Chunsheng Gong,Yoshiya Uwatoko,J. P. Sun,Hechang Lei,Jiangping Hu,J.-G. Cheng +11 more
TL;DR: In this paper, the interplay between CDW and superconductivity in a topological kagome metal has been studied using measurements of resistivity, dc and ac magnetic susceptibility under various pressures up to 6 GPa.
Journal ArticleDOI
Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
Hui Chen,Haitao Yang,Bin Hu,Zhen Zhao,Jie Yuan,Yuqing Xing,Guojian Qian,Zihao Huang,Geng Li,Yuhan Ye,Qiangwei Yin,Chunsheng Gong,Zhijun Tu,Hechang Lei,Shen Ma,Hua Zhang,Shunli Ni,Hengxin Tan,Chengmin Shen,Xiaoli Dong,Binghai Yan,Ziqiang Wang,Hong-Jun Gao +22 more
TL;DR: In this paper, the vanadium-based kagome lattice CsV3Sb5 was observed to exhibit a V-shaped pairing gap about 0.5 meV below a transition temperature Tc about 2.3 K.
Journal ArticleDOI
Charge Density Waves and Electronic Properties of Superconducting Kagome Metals.
TL;DR: In this article, the authors investigated the electronic and structural properties of charge density wave (CDW) by first-principles calculations and revealed an inverse Star of David deformation as the $2\ifmmode\times\else\texttimes\fi{}2
Journal ArticleDOI
Concurrence of anomalous Hall effect and charge density wave in a superconducting topological kagome metal
Fanghang Yu,Tao Wu,Zhen-Hua Wang,B. Lei,W. Z. Zhuo,J. J. Ying,Xianhui Chen,Xianhui Chen,Xianhui Chen +8 more
TL;DR: In this paper, the anomalous Hall effect (AHE) typically occurs in ferromagnetic materials but is not expected in conventional superconductors, and the authors find a giant AHE in the kagome superconductor CsV${}_{3}$Sb${}-5}$.
References
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Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
Journal ArticleDOI
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.
Georg Kresse,Jürgen Furthmüller +1 more
TL;DR: An efficient scheme for calculating the Kohn-Sham ground state of metallic systems using pseudopotentials and a plane-wave basis set is presented and the application of Pulay's DIIS method to the iterative diagonalization of large matrices will be discussed.
Journal ArticleDOI
Projector augmented-wave method
TL;DR: An approach for electronic structure calculations is described that generalizes both the pseudopotential method and the linear augmented-plane-wave (LAPW) method in a natural way and can be used to treat first-row and transition-metal elements with affordable effort and provides access to the full wave function.
Journal ArticleDOI
From ultrasoft pseudopotentials to the projector augmented-wave method
Georg Kresse,Daniel P. Joubert +1 more
TL;DR: In this paper, the formal relationship between US Vanderbilt-type pseudopotentials and Blochl's projector augmented wave (PAW) method is derived and the Hamilton operator, the forces, and the stress tensor are derived for this modified PAW functional.
Journal ArticleDOI
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set
Georg Kresse,Jürgen Furthmüller +1 more
TL;DR: A detailed description and comparison of algorithms for performing ab-initio quantum-mechanical calculations using pseudopotentials and a plane-wave basis set is presented in this article. But this is not a comparison of our algorithm with the one presented in this paper.
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