CsV_{3}Sb_{5}: A Z_{2} Topological Kagome Metal with a Superconducting Ground State.

By B. Ortiz, S. Teicher, Yong Hu, J. Zuo, P. Sarte, Emily C. Schueller, A. Abeykoon, M. Krogstad, S. Rosenkranz, R. Osborn and 4 more. Physical Review Letters, 2020

660 citations recorded by the source corpus.

Recently discovered alongside its sister compounds KV_{3}Sb_{5} and RbV_{3}Sb_{5}, CsV_{3}Sb_{5} crystallizes with an ideal kagome network of vanadium and antimonene layers separated by alkali metal ions. This work presents the electronic properties of CsV_{3}Sb_{5}, demonstrating bulk superconductivity in single crystals with a T_{c}=2.5  K. The normal state electronic structure is studied via angle-resolved photoemission spectroscopy and density-functional theory, which categorize CsV_{3}Sb_{5} as a Z_{2} topological metal. Multiple protected Dirac crossings are predicted in close proximity to the Fermi level (E_{F}), and signatures of normal state correlation effects are also suggested by a high-temperature charge density wavelike instability. The implications for the formation of unconventional superconductivity in this material are discussed.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/34adea37b4d173480bf78173c2e48fa6feb4c859

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. E. Kenney
2. B. Ortiz
3. Ta-Ryeong Park
4. M. Graf
5. R. Seshadri
6. S. Teicher
7. Stephen D. Wilson
8. L. Balents

In Condensed Matter Physics

1. Ta-Ryeong Park
2. L. Balents
3. Mengxing Ye
4. Ashvin Vishwanath
5. Simon Trebst
6. Xianhui Chen

Citations in the corpus

• Electronic instabilities of kagome metals: Saddle points and Landau theory (2021, background): “Furthermore, density functional calculations identified CsV3Sb5 as a Z2 topological metal [39].”
• Observation of Unconventional Charge Density Wave without Acoustic Phonon Anomaly in Kagome Superconductors AV3Sb5 ( A=Rb , Cs) (2021, background): “2(e) and (f), the same 3D-CDW superlattice structure is also observed in CsV3Sb5, suggesting a ubiquitous CDW mechanism for all AV3Sb5.”
• Superconductivity in the Z2 kagome metal KV3Sb5 (2020, methodology): “5 K in both single crystals and powders [15].”