3 papers
cond-mat.mes-hall2026
Higher-winding phases in one-dimensional non-Hermitian topological superconductors
Yung-Yeh Chang, Xiang-Yu Li, Ken Shiozaki +1
Non-Hermitian topological superconductors provide a setting in which point-gap topology, non-Hermitian skin effects, and Majorana zero modes are strongly intertwined. In this work,…
cond-mat.str-el2025
Quasi-two-dimensional spin helix and magnon-induced singularity in twisted bilayer graphene
Yung-Yeh Chang, Kazuma Saito, Chen-Hsuan Hsu
Twisted bilayer graphene exhibits prominent correlated phenomena in two distinct regimes: a Kondo lattice near the magic angle, resembling heavy fermion systems, and a triangular c…
cond-mat.str-el2025
Theory of universal Planckian metal in t-J model: application for high-Tc cuprate superconductors
Yung-Yeh Chang, Khoe Van Nguyen, Kimberly Remund +1
The mysterious quantum-critical Planckian bad metal phase with perfect T-linear resistivity persisting beyond the quasi-particle limit and universal T-linear scattering rate has be…