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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Interplay between charge order and superconductivity in the kagome metal KV$_3$Sb$_5$.
Feng Du,Shuaishuai Luo,Brenden R. Ortiz,Ye Chen,Weiyin Duan,Dongting Zhang,Xin Lu,Stephen D. Wilson,Yu Song,Huiqiu Yuan +9 more
TL;DR: In this article, the evolution of charge order and superconductivity in kagome lattice was studied under hydrostatic pressure using electrical resistivity measurements, showing that the superconducting transition temperature of kV$_3$Sb$_5$ increases with the application of pressure.
Journal ArticleDOI
First-principles study of the double-dome superconductivity in the kagome material CsV 3 Sb 5 under pressure
Journal ArticleDOI
Pressure-Induced Dimensional Crossover in a Kagome Superconductor
TL;DR: In this article , the authors carried out high-pressure electrical measurements up to 150 GPa, together with high pressure x-ray diffraction measurements and first-principles calculations on CsV_{3}Sb_{5} and found the new superconducting phase to be rather robust and inherently linked to the interlayer Sb2-Sb2 interactions.
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Magneto-Seebeck effect and ambipolar Nernst effect in the CsV 3 Sb 5 superconductor
Yuhan Gan,W. Xia,Long Zhang,Kunya Yang,Xinrun Mi,Aifeng Wang,Yisheng Chai,Yanfeng Guo,Xiaoyuan Zhou,Mingquan He +9 more
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Strain-sensitive superconductivity in the kagome metals KV 3 Sb 5 and Cs V 3 Sb 5 probed by point-contact spectroscopy
Lichang Yin,Dongting Zhang,Chufan Chen,Ge Ye,Fanghang Yu,Brenden R. Ortiz,Shuaishuai Luo,Weiyin Duan,Hang Su,Jianjun Ying,Stephen D. Wilson,Xianhui Chen,Xianhui Chen,Huiqiu Yuan,Yu Song,Xin Lu +15 more
TL;DR: In this paper, soft and mechanical point-contact spectroscopy (SPCS and MPCS) studies of kagome superconductors were conducted to demonstrate highly strain-sensitive superconductivity in kagomes.
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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