10 papers
Microscopic phase-transition theory of charge density waves: revealing hidden crossovers of phason and amplitudon
F. Yang, L. Q. Chen
We develop a self-consistent phase-transition theory of charge density waves (CDWs), starting from a purely microscopic model. Specifically, we derive a microscopic CDW gap equatio…
Preformed Cooper pairing and the uncondensed normal-state component in phase-fluctuating monolayer cuprate superconductivity
F. Yang, Y. Shi, L. Q. Chen
We develop a self-consistent microscopic framework beyond mean-field theory for monolayer cuprate superconductivity. It couples fermionic quasiparticles with collective phase dynam…
Superconducting Decoherence and Thermal Quenching of the Josephson Diode Effect in Low-Dimensional Josephson Systems
F. Yang, C. Y. Dong, Joshua A. Robinson +1
Motivated by recent studies on superconducting (SC) diode nonreciprocity, we uncover a generic smooth SC-phase decoherence mechanism in low-dimensional Josephson structures. Contra…
A tractable framework for phase transitions in phase-fluctuating disordered 2D superconductors: applications to bilayer MoS and disordered InO thin films
F. Yang, L. Q. Chen
Starting from the purely microscopic model, we go beyond conventional mean-field theory and develop a self-consistent microscopic thermodynamic framework for disordered 2D supercon…
Microscopic Phase-Transition Framework for Gate-Tunable Superconductivity in Monolayer WTe
F. Yang, G. D. Zhao, Y. Shi +1
The recently reported gate-tunable superconductivity in monolayer WTe [Science 362, 922 (2018); Science 362, 926 (2018); Nat. Phys. 20, 269 (2024); PRR 7, 013224 (2025)] exhibi…
Revealing THz optical signatures of Shiba-state-induced gapped and gapless superconductivity
F. Yang, R. Y. Fang, S. L. Zhang +1
We report a fully self-consistent calculation of the complex renormalization by exchange interactions and hence the complete phase diagram of conventional -wave superconductors…