Superconductivity in the Z 2 kagome metal KV 3 Sb 5
Brenden R. Ortiz,P. M. Sarte,Eric Kenney,Michael Graf,Samuel M. L. Teicher,Ram Seshadri,Stephen D. Wilson +6 more
Reads0
Chats0
TLDR
In this paper, the authors reported the observation of bulk superconductivity in single crystals of the two-dimensional kagome metal (KV, Rb, Cs) with magnetic susceptibility, resistivity, and heat capacity measurements.Abstract:
Here we report the observation of bulk superconductivity in single crystals of the two-dimensional kagome metal ${\mathrm{KV}}_{3}{\mathrm{Sb}}_{5}$. Magnetic susceptibility, resistivity, and heat capacity measurements reveal superconductivity below ${T}_{c}=0.93\phantom{\rule{0.28em}{0ex}}\mathrm{K}$, 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 ${\mathrm{CsV}}_{3}{\mathrm{Sb}}_{5}$ is likely a common feature across the $A{\mathrm{V}}_{3}{\mathrm{Sb}}_{5}$ ($A$: K, Rb, Cs) family of compounds and establishes 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
More filters
Journal ArticleDOI
A unique van Hove singularity in kagome superconductor CsV3-xTaxSb5 with enhanced superconductivity
Yang Lu,Yulei Han,Jinjin Liu,Hui Chen,Zihao Huang,Li Huai,Bing Wang,Jianchang Shen,Shuhan Ding,Zeyu Li,Shuting Peng,Zhi Min Wei,Y. Miao,Xiupeng Sun,Zhipeng Ou,Ziji Xiang,Makoto Hashimoto,Donghui Lu,Yugui Yao,Haitao Yang,Xianhui Chen,Zhenhua Qiao,Zhiwei Wang,Ju He +23 more
TL;DR: In this paper , angle-resolved photo-emission measurements were used to detect the van Hove singularity at the Fermi level in a kagome superconductor CsV3-xTaxSb5.
Posted Content
Revealing the origin of the intrinsic anomalous Hall effect in the itinerant ferromagnet Fe$_3$Sn$_2$ by magneto-optical spectroscopy
F. L. Schilberth,N. Unglert,L. Prodan,F. Meggle,J. Ebad Allah,Christine A. Kuntscher,A. A. Tsirlin,V. Tsurkan,Joachim Deisenhofer,Liviu Chioncel,I. Kézsmárki,Sándor Bordács +11 more
TL;DR: In this paper, a single ferromagnetic kagome layer is predicted to realize a Chern insulator with quantized Hall conductance, which upon stacking can become a Weyl-semimetal possessing large anomalous Hall effect (AHE) and magneto-optical activity.
References
More filters
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.
Related Papers (5)
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