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
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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
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Study of the electronic properties of topological kagome metals YV$_6$Sn$_6$ and GdV$_6$Sn$_6$
Ganesh Pokharel,Samuel M. L. Teicher,Brenden R. Ortiz,P. M. Sarte,Guang Wu,Shuting Peng,Junfeng He,Ram Seshadri,Stephen D. Wilson +8 more
TL;DR: In this article, the synthesis and characterization of vanadium-based kagome metals YV$_6$Sn$_ 6$ and GdV$(6)Sn$ (6) are presented.
Journal ArticleDOI
Optimized superconductivity in the vicinity of a nematic quantum critical point in the kagome superconductor Cs(V1-xTix)3Sb5
Yeahan Sur,Kwang-Tak Kim,K. Kim +2 more
TL;DR: In this paper , a double-dome-shaped superconducting phase diagram of Cs(V1-xTix)3Sb5 (x = 0.00-0.06) is realized.
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Surface-termination-dependent electronic states in kagome superconductors <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mi>A</mml:mi><mml:mi mathvariant="normal">V</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Sb</mml:mi><mml:mn>5</m
Takemi Kato,Yongkai Li,Min Liu,Kosuke Nakayama,Zhiwei Wang,Seigo Souma,Miho Kitamura,Koji Horiba,Hiroshi Kumigashira,Takashi Takahashi,Yugui Yao,Takafumi Sato +11 more
TL;DR: In this paper , a micro-focused angle-resolved photo-emission spectroscopy was used to identify the origin of the charge density wave (CDW) in kagome superconductors.
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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>YbV</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mi>Sb</mml:mi></mml:mrow><mml:mn>4</mml:mn></mml:msub></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub
TL;DR: In this paper , vanadium-based kagome antimonides have been proposed to incorporate the chemical flexibility of a rare-earth site, allowing for the intertwining of magnetic and charge degrees of freedom.
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Enhancement of superconductivity and suppression of charge-density wave in As-doped <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>CsV</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Sb</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>
Yi Liu,Changdong Liu,Qinqing Zhu,Liangwen Ji,Siqi Wu,Yun-Lei Sun,Jin-Ke Bao,Wen-He Jiao,Xiaofeng Xu,Zhi Ren,Guanghan Cao +10 more
TL;DR: In this article , the authors investigated the As-doping effect in the newly discovered kagome superconductor, and they found that partial substitution of Sb with As leads to shrinkage of the $c$ lattice, which effectively applies a chemical pressure in the system.
References
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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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