Related references
Note: Only part of the references are listed.
Article
Physics, Multidisciplinary
Hong Li et al.
Summary: Recently discovered AV(3)Sb(5) superconductors provide a fresh opportunity to study correlation-driven electronic phenomena on a kagome lattice. Using scanning tunnelling microscopy, researchers have found pronounced intensity anisotropy in the charge density wave of KV3Sb5, with one direction being distinctly different compared to the other two. Additionally, the CDW phase is unaffected by the magnetic-field direction, regardless of the presence or absence of atomic defects.
Article
Materials Science, Multidisciplinary
Ece Uykur et al.
Summary: In this study, we discover unconventional localized carriers with strong renormalization across the density-wave transition in KV3Sb5 through optical spectroscopy and density-functional calculations. We also observe strong phonon anomalies not only below the density-wave transition, but also at high temperatures, indicating a complex interplay between phonons and the underlying electronic structure. We propose star-of-David and tri-hexagon configurations for the density-wave order in KV3Sb5, which resemble the p-wave states expected in the Hubbard model on the kagome lattice with van Hove singularity filling.
NPJ QUANTUM MATERIALS
(2022)
Article
Multidisciplinary Sciences
Hui Chen et al.
Summary: In this study, unconventional superconductivity and a pair density wave (PDW) were observed in CsV3Sb5, a vanadium-based kagome metal. The material exhibits a V-shaped pairing gap and a 3Q PDW, along with other unique characteristics such as strong-coupling superconductivity and charge order. These findings provide insights into the correlated electronic states and superconductivity in vanadium-based kagome metals.
Article
Multidisciplinary Sciences
He Zhao et al.
Summary: In a new kagome superconductor CsV3Sb5, temperature-dependent cascade of different symmetry-broken electronic states including tri-directional charge order and V-shaped spectral gap opening are discovered. Additional breaking of the six-fold rotational symmetry and presence of an additional 4a(0) unidirectional charge order through the superconducting transition are observed. The experiments reveal a complex landscape of electronic states on a kagome lattice, with intriguing parallels to high-Tc superconductors and twisted bilayer graphene.
Article
Physics, Multidisciplinary
Han-Shu Xu et al.
Summary: The study on the kagome superconductor CsV3Sb5 reveals multiband superconductivity, in-gap states induced by magnetic impurities, and different interactions between CDW and superconductivity on various bands. This provides critical clues for further understanding the relationship between superconductivity and CDW in CsV3Sb5.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Xianxin Wu et al.
Summary: The recent discovery of AV(3)Sb(5) has revealed an intriguing arena for exotic Fermi surface instabilities in a kagome metal, with superconductivity near multiple van Hove singularities showing indications of unconventional pairing. The sublattice interference mechanism is crucial in understanding the formation of superconductivity in a kagome metal, with nonlocal Coulomb repulsion, the sublattice profile of the van Hove bands, and the interaction strength being crucial parameters determining the preferred pairing symmetry. Implications for potentially topological surface states are discussed, along with a proposal for additional measurements to determine the nature of superconductivity in AV(3)Sb(5).
PHYSICAL REVIEW LETTERS
(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
Brenden R. Ortiz et al.
Summary: Through quantum oscillation measurements and density functional theory modeling, we have gained a deeper understanding of the charge density wave (CDW) instability in AV(3)Sb(5) kagome metals, proving that CDW triggers a reconstruction of Fermi surface pockets associated with vanadium orbitals and the kagome lattice framework, as well as identifying split oscillation frequencies originating from reconstructed pockets.
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
Multidisciplinary Sciences
Xilin Feng et al.
Summary: The study identifies a chiral flux phase in the quasi-2D Kagome superconductor AV(3)Sb(5), which has the lowest energy and exhibits 2 x 2 charge orders observed experimentally. This phase breaks time-reversal symmetry and displays anomalous Hall effect.
Article
Physics, Multidisciplinary
Chao Mu et al.
Summary: CsV3Sb5 exhibits s-wave superconducting behavior at low temperatures, with superconductivity emerging in the charge order state. Split V-51 NMR spectra and Sb-121/123 NQR spectra were observed after the charge density wave, indicating a commensurate CDW state.
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
Chemistry, Physical
Yu-Xiao Jiang et al.
Summary: The study reveals an unconventional chiral charge order in KV3Sb5, a material with both a topological band structure and a superconducting ground state, using high-resolution scanning tunnelling microscopy. A 2 x 2 superlattice structure is observed in the experiment, along with an energy gap opening and charge modulation across the Fermi level.
Article
Physics, Multidisciplinary
Hengxin Tan et al.
Summary: In this study, electronic and structural properties of the CDW phase in Kagome metals AV(3)Sb(5) were investigated using first-principles calculations. It was found that the CDW phase features an inverse Star of David structure, inherits nontrivial topological band structure, and has weak electron-phonon coupling indicating unconventional pairing mechanism for superconductivity. These results provide essential insights into the superconductivity and topology in Kagome metals.
PHYSICAL REVIEW 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
Physics, Multidisciplinary
Weiyin Duan et al.
Summary: CsV3Sb5 exhibits nodeless superconductivity consistent with two-gap s-wave superconductivity description, and is confirmed under multiple Fermi surfaces.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2021)
Article
Materials Science, Multidisciplinary
Kosuke Nakayama et al.
Summary: This study investigates the low-energy excitations of CsV3Sb5 and reveals strong CDW energy gaps associated with the Fermi surface and momentum, as well as energy gaps at the Dirac-crossing points, highlighting the importance of spin-orbit coupling.
Article
Materials Science, Multidisciplinary
Zhiwei Wang et al.
Summary: This study reports the observation of electronic chiral charge order in CsV3Sb5 using scanning tunneling microscopy (STM). The research reveals the unique electronic nature of the chiral charge order, as well as the formation of domain walls in the 1 x 4 superlattice, possibly as a surface effect. Additionally, clean-limit superconductivity is observed through vortex core bound states within the superconducting energy gap under a c-axis magnetic field.
Article
Materials Science, Multidisciplinary
Takamori Park et al.
Summary: Electronic instabilities of a kagome metal with Fermi energy close to saddle points at the hexagonal Brillouin zone face centers were studied using parquet renormalization group, which determined superconducting, charge, orbital moment, and spin density waves. Landau theory was then applied to discuss how different primary density wave orders result in charge density wave modulations.
Article
Materials Science, Multidisciplinary
Yu-Ping Lin et al.
Summary: The study investigates the interaction between real and imaginary charge density waves at the Van Hove singularity on hexagonal lattices. It reveals the formation of 3Q complex orders and the rich phase diagram they constitute. The theoretical model offers transparent interpretations of experimental observations in kagome metals and sheds light on the nature of topological charge density waves.
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
Jianzhou Zhao et al.
Summary: Recent studies have revealed fascinating physics in AV(3)Sb(5) materials, including charge density wave and superconducting states. Research on the KV3Sb5 family materials showed that they are good metals with weak local correlations. The findings suggest that the local correlation strength in these materials may be too weak to generate unconventional superconductivity.
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
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
Mingu Kang et al.
Article
Multidisciplinary Sciences
Shuo-Ying Yang et al.
Article
Multidisciplinary Sciences
Zhonghao Liu et al.
NATURE COMMUNICATIONS
(2020)
Article
Physics, Multidisciplinary
Brenden R. Ortiz et al.
PHYSICAL REVIEW LETTERS
(2020)
Article
Materials Science, Multidisciplinary
Siyuan Wan et al.
Article
Physics, Multidisciplinary
Jia-Xin Yin et al.
Article
Materials Science, Multidisciplinary
Brenden R. Ortiz et al.
PHYSICAL REVIEW MATERIALS
(2019)
Article
Multidisciplinary Sciences
Mingyang Chen et al.
Article
Multidisciplinary Sciences
Linda Ye et al.
Article
Physics, Multidisciplinary
Enke Liu et al.
Article
Physics, Multidisciplinary
Shingo Yonezawa et al.
Review
Physics, Multidisciplinary
Masatoshi Sato et al.
REPORTS ON PROGRESS IN PHYSICS
(2017)
Article
Physics, Multidisciplinary
Yi Zhou et al.
REVIEWS OF MODERN PHYSICS
(2017)
Article
Physics, Multidisciplinary
Guan Du et al.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2017)
Article
Physics, Multidisciplinary
K. Matano et al.
Article
Multidisciplinary Sciences
Y. Pan et al.
SCIENTIFIC REPORTS
(2016)
Article
Physics, Multidisciplinary
Eduardo Fradkin et al.
REVIEWS OF MODERN PHYSICS
(2015)
Review
Physics, Multidisciplinary
R. M. Fernandes et al.
Article
Materials Science, Multidisciplinary
Liang Fu
Article
Multidisciplinary Sciences
I. I. Mazin et al.
NATURE COMMUNICATIONS
(2014)
Article
Materials Science, Multidisciplinary
Wan-Sheng Wang et al.
Article
Physics, Multidisciplinary
Maximilian L. Kiesel et al.
PHYSICAL REVIEW LETTERS
(2013)
Article
Materials Science, Multidisciplinary
Shun-Li Yu et al.
Article
Multidisciplinary Sciences
Simeng Yan et al.
Review
Multidisciplinary Sciences
Leon Balents
Article
Multidisciplinary Sciences
Jiun-Haw Chu et al.
Review
Physics, Condensed Matter
Eduardo Fradkin et al.
ANNUAL REVIEW OF CONDENSED MATTER PHYSICS, VOL 1
(2010)
Article
Materials Science, Multidisciplinary
Wing-Ho Ko et al.
Article
Materials Science, Multidisciplinary
H. -M. Guo et al.
Article
Multidisciplinary Sciences
R. A. Borzi et al.
