Quantum dephasing of kagome superconductivity
arXiv:2302.11762 · doi:10.1016/j.scib.2023.02.035
Abstract
Recent observations for a pressurized kagome superconductor through transport, muon spin relaxation, nuclear magnetic resonance, and point contact spectroscopy demonstrate striking fluctuating superconductivity at a magic pressure. This discovery may hint at a new quantum dephasing mechanism, which can be discussed from the perspectives of correlation and topology. Three outstanding questions should be considered in decoding this mechanism: one is the intrinsic phase fragile nature of kagome superconductivity; second is the role of Coulomb interactions within different charge-ordered phases; third is the geometrical phase compatibility between superconductivity and different charge orders.
arXiv commentTo appear in Science Bulletin
References in corpus (11)
- LDA energy bands, low-energy Hamiltonians, t', t'', t_{perp}(k), and J_{perp}
- Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
- Topological kagome magnets and superconductors
- Double superconducting dome and triple enhancement of Tc in the kagome superconductor CsV3Sb5 under high pressure
- Unusual competition of superconductivity and charge-density-wave state in a compressed topological kagome metal
- Correlation-driven chiral superconductivity and chiral spin order in doped kagome lattice
- Tunable nodal kagome superconductivity in charge ordered RbV3Sb5
- Pairing versus phase coherence of doped holes in distinct quantum spin backgrounds
- Structural instability and charge modulations in the Kagome superconductor VSb
- Emergent superconducting fluctuations in a compressed kagome superconductor
- Local magnetic moments due to loop currents in metals