273 citations · 943 across the 14 of their papers we have counts for
14 papers
Anyon Superconductivity from Topological Criticality in a Hofstadter-Hubbard Model
Stefan Divic, Valentin Crépel, Tomohiro Soejima +4
We argue that the combination of strong repulsive interactions and high magnetic fields can generate electron pairing and superconductivity. Inspired by the large lattice constants…
Emergent QED from half-filled flat Chern bands
Xue-Yang Song, Hart Goldman, Liang Fu
In recent years, two-dimensional Dirac materials patterned with a superlattice structure have emerged as a rich platform for exploring correlated and topological quantum matter. In…
Translation-enriched spin liquids and topological vison bands: Possible application to -RuCl
Xue-Yang Song, T. Senthil
Inspired by experiments on the magnetic field induced phases of the spin-orbit coupled Mott insulator -RuCl, we study some general aspects of gapped Quantum Spin…
Deconfined criticalities and dualities between chiral spin liquid, topological superconductor and charge density wave Chern insulator
Xue-Yang Song, Ya-Hui Zhang
We propose bi-critical and tri-critical theories between chiral spin liquid (CSL), topological superconductor (SC) and charge density wave (CDW) ordered Chern insulator with Chern…
Doping a moiré Mott Insulator: A t-J model study of twisted cuprates
Xue-Yang Song, Ya-Hui Zhang, Ashvin Vishwanath
We theoretically investigate twisted structures where each layer is composed of a strongly correlated material. In particular, we study a twisted t-J model of cuprate multilayers w…
Doping the chiral spin liquid -- topological superconductor or chiral metal?
Xue-Yang Song, Ashvin Vishwanath, Ya-Hui Zhang
We point out that there are two different chiral spin liquid states on the triangular lattice and discuss the conducting states that are expected on doping them. These states label…
Electric polarization as a nonquantized topological response and boundary Luttinger theorem
Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath +1
We develop a nonperturbative approach to the bulk polarization of crystalline electric insulators in dimensions. Formally, we define polarization via the response to backg…
Unifying Description of Competing Orders in Two Dimensional Quantum Magnets
Xue-Yang Song, Chong Wang, Ashvin Vishwanath +1
Quantum magnets provide the simplest example of strongly interacting quantum matter, yet they continue to resist a comprehensive understanding above one spatial dimension (1D). In…
From spinon band topology to the symmetry quantum numbers of monopoles in Dirac spin liquids
Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath +1
The interplay of symmetry and topology has been at the forefront of recent progress in quantum matter. Here we uncover an unexpected connection between band topology and the descri…
A strongly correlated metal built from Sachdev-Ye-Kitaev models
Xue-Yang Song, Chao-Ming Jian, Leon Balents
Strongly correlated metals comprise an enduring puzzle at the heart of condensed matter physics. Commonly a highly renormalized heavy Fermi liquid occurs below a small coherence sc…
Interaction effects on the classification of crystalline topological insulators and superconductors
Xue-Yang Song, Andreas P. Schnyder
We classify interacting topological insulators and superconductors with order-two crystal symmetries (reflection and twofold rotation), focusing on the case where interactions redu…
Low-energy Spin Dynamics of the Honeycomb Spin Liquid Beyond the Kitaev Limit
Xue-Yang Song, Yi-Zhuang You, Leon Balents
We investigate the generic features of the low energy dynamical spin structure factor of the Kitaev honeycomb quantum spin liquid perturbed away from its exact soluble limit by gen…
The CST Bounce Universe model -- a parametric study
Yeuk-Kwan E. Cheung, Xue Song, Shuyi Li +2
A bounce universe model with a scale-invariant and stable spectrum of primordial density perturbations was constructed using a consistent truncation of the D-brane dynamics from Ty…
Quantum oscillation in narrow-gap topological insulators
Long Zhang, Xue-Yang Song, Fa Wang
The canonical understanding of quantum oscillation in metals is challenged by the observation of de Haas-van Alphen effect in an insulator, SmB [Tan \emph{et al}, Science {\b…