The kagome metals RbTi3Bi5 and CsTi3Bi5

Article Physics, Multidisciplinary

Screening Promising CsV3Sb5-Like Kagome Materials from Systematic First-Principles Evaluation

Yutao Jiang et al.

Summary: This study expands the variety of CsV3Sb5-like materials and identifies 28 promising candidates. These compounds exhibit unique electronic structures and can be categorized into non-magnetic and magnetic groups.

CHINESE PHYSICS LETTERS (2022)

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Article Materials Science, Multidisciplinary

Fermi level tuning and double-dome superconductivity in the kagome metal CsV3Sb5-xSnx

Yuzki M. Oey et al.

Summary: The unconventional coupling between CDW and superconducting states in CsV3Sb5-xSnx materials was studied. With hole doping, superconductivity shows a nonmonotonic evolution, while the CDW order is rapidly suppressed.

PHYSICAL REVIEW MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Simple Chemical Rules for Predicting Band Structures of Kagome Materials

Milena Jovanovic et al.

Summary: Compounds with a Kagome lattice exhibit a wide range of properties, such as localized magnetism and Dirac Fermions. The symmetry of the Kagome lattice gives rise to Dirac cones and flat bands, but not all compounds with a Kagome sublattice show these properties. By sorting crystals with a Kagome lattice into groups and using chemical heuristics and local symmetry, we can predict the presence of Kagome bands near the Fermi level.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

Pressure dependence of superconductivity in alkali-Bi compounds KBi2 and RbBi2

Huan Li et al.

Summary: This study investigates the structural and superconducting properties of alkali-Bi-based compounds KBi2 and RbBi2 under a wide range of pressures. The results demonstrate the presence of two superconducting phases in low-pressure range and the decomposition of KBi2 into KBi and Bi at high pressures. The stability of superconducting properties for RbBi2 is relatively constant under pressure. Additionally, the study explores the deviation of superconducting Cooper pair symmetry from the simple s-wave pairing model, indicating the complex electronic structure of Bi.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

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Review Materials Science, Multidisciplinary

Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties

Frank Stein et al.

Summary: Laves phases, with their simple crystal structure, are common intermetallic phases formed by various element combinations, offering a wide range of potential applications. This review summarizes the knowledge on Laves phases and explores their roles in different functional and structural materials, providing insights for further research and application.

JOURNAL OF MATERIALS SCIENCE (2021)

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Article Materials Science, Multidisciplinary

Superconductivity in the Z2 kagome metal KV3Sb5

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)

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Article Physics, Multidisciplinary

Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV3Sb5

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.

PHYSICAL REVIEW X (2021)

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Article Chemistry, Physical

Unconventional chiral charge order in kagome superconductor KV3Sb5

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.

NATURE MATERIALS (2021)

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Review Multidisciplinary Sciences