From the 1 of 7 linked papers with an AI index.
7 papers
Universality of Energy-Space Entanglement in Quantum Impurity Models
Geng-Dong Zhou, Zhi-Da Song
The paper investigates entanglement entropy defined by an energy‑space bipartition in quantum impurity models, showing universal constant values tied to topological edge modes and…
Strongly Correlated Superconductivity in Twisted Bilayer Graphene: a Gutzwiller Study
Matthew Shu Liang, Yi-Jie Wang, Geng-Dong Zhou +2
We study strongly correlated superconductivity in magic-angle twisted bilayer graphene (MATBG) using a variational Gutzwiller wavefunction $\ket{Ψ_G} = \prod_{\vb{R}} \hat{P}_{\vb…
Chern number reversal and emergent superconductivity in rhombohedral graphene induced by in-plane magnetic fields
Xiaozhou Zan, Hangzhe Li, Jiawei Guo +11
Rhombohedral graphene with topological flat bands offers an ideal platform for realizing correlated and topological quantum phases. Here we investigate hBN aligned eight-layer rhom…
Spin-Valley Anderson Impurity for Moiré Systems: Fermi Liquid, Pairing, and Pseudogap
Yi-Jie Wang, Geng-Dong Zhou, Hyunsung Jung +3
Recent experiments support that the magic-angle graphene can be modeled by a periodic array of correlated quantum impurities, immersed in a Dirac sea. This work analytically tackle…
Bosonization Solution to Spin-Valley Kondo Problem: Finite-Size Spectrum and Renormalization Group Analysis
Yi-Jie Wang, Geng-Dong Zhou, Hyunsung Jung +3
Spin-valley Anderson impurities (SVAIM) with (anti-)Hund's splitting provide a natural explanation to the origin of pairing potential and pseudogap in the magic-angle graphene. In…
Hundness in twisted bilayer graphene: correlated gaps and pairing
Seongyeon Youn, Beomjoon Goh, Geng-Dong Zhou +2
We characterize gap-opening mechanisms in the topological heavy fermion (THF) model of magic-angle twisted bilayer graphene (MATBG), with and without electron-phonon coupling, usin…