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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Structural, Thermodynamic, and Transport Properties of the Small-Gap Two-Dimensional Metal-Organic Kagomé Materials Cu3(hexaiminobenzene)2 and Ni3(hexaiminobenzene)2.
Tanya Berry,Jennifer R. Morey,K. E. Arpino,Jin ‐Hu Dou,Claudia Felser,Mircea Dincă,Tyrel M. McQueen +6 more
TL;DR: In this article , structural, thermodynamic, and transport studies of two-dimensional kagomé metal-organic frameworks Ni3(HIB)2 and Cu3HIB2 (HIB = hexaiminobenzene) are presented.
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Order-disorder charge density wave instability in the kagome metal (Cs,Rb)V3Sb5
D. Subires,A. N. Korshunov,Aissa Hadj Said,L.M. Sanchez,Brenden R. Ortiz,S J Wilson,Alexei Bosak,Santiago Blanco-Canosa +7 more
TL;DR: In this paper , the authors combine diffuse and inelastic x-ray scattering to identify a 3-dimensional precursor of the charge order at the L point that condenses into a CDW through a first order phase transition.
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Superconductivity and topological properties in the kagome metals <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="normal">Cs</mml:mi><mml:msub><mml:mi>M</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Te</mml:mi><mml:mn>5</mml:mn></mml:msub>
TL;DR: In this article , the superconductivity and topological properties of kagome materials were investigated using first-principles calculations, and the results of formation energy and phonon dispersion indicate that these materials are stable and may be synthesized in experiments.
Journal ArticleDOI
Unconventional ferromagnetism and spin-triplet superconductivity in the imbalanced kagome-lattice Hubbard model
TL;DR: In this paper , the authors investigated the superconducting properties of kagome lattice and revealed the possible super-conducting state has a triplet $f$-wave pairing symmetry, and provided important insights regarding the interplay between electronic correlations and geometry.
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Magneto-optical detection of topological contributions to the anomalous Hall effect in a kagome ferromagnet
TL;DR: In this article , a single ferromagnetic kagome layer is predicted to realize a Chern insulator with quantized Hall conductance, which upon stacking can become a Weyl semimetal with a large anomalous Hall effect (AHE) and magneto-optical activity.
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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