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Article
Physics, Condensed Matter
Eric M. Kenney et al.
Summary: Muon spin relaxation and rotation measurements on the newly discovered kagome metal KV3Sb5 reveal a local field dominated by weak magnetic disorder associated with nuclear moments and showing a modest temperature dependence consistent with bulk magnetic susceptibility. The absence of evidence for V4+ local moments suggests that further studies are needed to understand the physics underlying the recently reported giant unconventional anomalous Hall effect in this material.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Multidisciplinary Sciences
Andrej Pustogow et al.
Summary: This study reveals the persistent Fermi-liquid behavior in correlated metals at half filling for varying correlation strength upon approaching a Mott insulator, showing pronounced quadratic dependences and a puzzling elastic contribution. The emergence of a bad metal from resilient quasiparticles near the Mott transition is demonstrated, supported by a theoretical model for the optical response.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Brenden R. Ortiz et al.
Summary: This study reports the observation of bulk superconductivity in single crystals of the two-dimensional kagome metal KV3Sb5, with further characterization of the normal state as a Z(2) topological metal using density functional theory (DFT) calculations. The presence of superconductivity in the AV(3)Sb(5) (A: K, Rb, Cs) family of compounds suggests a common feature across these materials, establishing 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.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Physics, Multidisciplinary
Qiangwei Yin et al.
Summary: The discovery of superconductivity in RbV3Sb5 single crystals with V kagome lattice is reported, showing a superconducting transition at around 0.92K. Anomalies in properties at T* around 102-103K are observed, possibly linked to the formation of a charge ordering state. The drastic change and sign reversal of the Hall coefficient R-H at T* can be partially explained by enhanced mobility of hole-type carriers, with quantum oscillations indicating the presence of small Fermi surfaces with low effective mass.
CHINESE PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Shunli Ni et al.
Summary: The high-quality CsV3Sb5 single crystals exhibit excellent superconducting and mixed state properties, with a significant anisotropic ratio of Hc2(ab)/Hc2(c) and Hc1(ab)/Hc1(c) larger than 1. The orientation of the two-fold anisotropy in in-plane angular-dependent magnetoresistance displays a unique twist characteristic of the Kagome geometry at a characteristic temperature of around 2.8 K.
CHINESE PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Xu Chen et al.
Summary: This study demonstrates the superconducting performance and high robustness of structural stability of kagome CsV3Sb5 under high pressures, revealing the variation of Tc under different pressures. Changes in electronic structure and electron-phonon coupling may be responsible for the pressure-induced reentrant superconductivity.
CHINESE PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
K. Y. Chen et al.
Summary: The study reveals that the CDW transition in CsV3Sb5 decreases with pressure, with an unusual M-shaped double dome in the T-c(P) curve showing enhancement up to 8 K at 2 GPa. This indicates a strong competition between CDW-like order and SC, particularly in the intermediate pressure range of P-c1 <= P <= P-c2.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
F. H. Yu et al.
Summary: A giant anomalous Hall effect (AHE) has been observed in kagome superconductor CsV3Sb5, with a conductivity reaching up to 2.1 x 10(4)Ω⁻¹ cm⁻¹, larger than most ferromagnetic metals. The emergence of AHE is strongly correlated with the higher-temperature charge-density-wave (CDW) transition, and AHE disappears when the CDW transition is completely suppressed under high pressure.
Article
Materials Science, Multidisciplinary
Xiaoxiang Zhou et al.
Summary: This study investigates the optical properties of CsV3Sb5 at various temperatures above and below the charge-density-wave transition. The presence of multiple Drude components is observed in the low-frequency optical conductivity above the CDW transition, with distinct origins attributed to different bands in the band structure. The opening of the CDW gap affects the broad Drude component significantly while leaving the narrow Drude component unaffected, highlighting the importance of saddle point nesting in driving the CDW instability in CsV3Sb5.
Article
Materials Science, Multidisciplinary
Feng Du et al.
Summary: The study on KV3Sb5 reveals that with increasing pressure, the charge order progressively weakens and the superconducting transition temperature undergoes different degrees of changes. A superconducting dome is formed at around 10 GPa, while a smaller superconducting dome emerges beyond 10 GPa.
Article
Materials Science, Multidisciplinary
Zhuyi Zhang et al.
Summary: This study reports pressure-induced reemergence of superconductivity in CsV3Sb5, where the superconducting critical temperature initially increases and then decreases with pressure, forming a dome-shaped superconducting phase diagram. A new superconducting state emerges with further compression above 16.5 GPa, with T-c reaching a second maximum around 5.0 K and remaining stable up to 47.9 GPa. The reemergence of superconductivity in V-based superconductor is suggested to be attributed to a pressure-induced Lifshitz transition, supported by high-pressure synchrotron x-ray-diffraction measurements showing the stability of the pristine hexagonal phase up to 43.1 GPa.
Article
Chemistry, Physical
Peter Blaha et al.
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Chemistry, Physical
Mingu Kang et al.
Review
Multidisciplinary Sciences
C. Broholm et al.
Article
Multidisciplinary Sciences
Shuo-Ying Yang et al.
Article
Physics, Multidisciplinary
A. Biswas et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Brenden R. Ortiz et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Jia-Xin Yin et al.
Article
Multidisciplinary Sciences
D. F. Liu et al.
Article
Materials Science, Multidisciplinary
Brenden R. Ortiz et al.
PHYSICAL REVIEW MATERIALS
(2019)
Article
Multidisciplinary Sciences
Linda Ye et al.
Article
Physics, Multidisciplinary
Zhiyong Lin et al.
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Luca V. Delacretaz et al.
Article
Materials Science, Multidisciplinary
D. B. Tanner
Article
Materials Science, Multidisciplinary
S. Fratini et al.
Article
Physics, Multidisciplinary
Maximilian L. Kiesel et al.
PHYSICAL REVIEW LETTERS
(2013)
Article
Physics, Multidisciplinary
A. A. Schafgans et al.
PHYSICAL REVIEW LETTERS
(2012)
