9 papers
Quantum Metric Localization and Quantum Metric Protection
Wen-Bo Dai, Jinchao Zhao, Shuai A. Chen +1
The study of disorder effects in electronic systems is one of the central themes in physics. It is well established that in the Anderson localization regime, the localization lengt…
Kinetic kagome magnetism: from self-trapping RVB polarons to semiclassical correlations
Yufei Pei, Shuai A. Chen, Claudio Castelnovo +1
To gain deeper insight into the role of hole kinetics in determining magnetism in highly frustrated doped Mott insulators, we consider the single-hole counter-Nagaoka problem on th…
Superconductivity from Quasiparticle Pairing of Intervalley Coherent State in Rhombohedral Trilayer Graphene
Chun Wang Chau, Shuai A. Chen, K. T. Law
Superconductivity is observed in rhombohedral trilayer graphene in a narrow regime between the flavor-symmetric state and the symmetry breaking phase, which cannot be described by…
Quantum Metric Length as a Fundamental Length Scale in Disordered Flat Band Materials
Chun Wang Chau, Tian Xiang, Shuai A. Chen +1
Our previous understanding of electronic transport in disordered systems was based on the assumption that there is a finite Fermi velocity for the relevant electrons. The Fermi vel…
Geometric Frustration Assisted Kinetic Ferromagnetism in Doped Mott Insulators
Qianqian Chen, Shuai A. Chen, Zheng Zhu
Understanding ferromagnetism mechanism in doped Mott insulators on frustrated lattices remains challenging at intermediate coupling and finite doping. Here, we study the itinerant…
Flat-band Fulde-Ferrell-Larkin-Ovchinnikov State from Quantum Geometric Discrepancy
Zi-Ting Sun, Ruo-Peng Yu, Shuai A. Chen +2
We propose a new scheme for realizing Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) Cooper pairing states within flat bands, in contrast to the conventional paradigm such as the Zeeman e…