1 citations · 1 across the 2 of their papers we have counts for
6 papers
Robust Flat Bands with Tunable Energies in Honeycomb Superlattices
Zihao Qi, Eric Bobrow, Yi Li
Flat bands in lattice models have provided useful platforms for studying strong correlation and topological physics. Recently, honeycomb superlattices have been shown to host flat…
Topologically Obstructed Superconducting Order
Canon Sun, Yi Li
We propose a class of topological superconductivity in which the pairing order is topologically obstructed in a three-dimensional time-reversal invariant system. Whe…
Berry Phase Enforced Spinor Pairing
Yi Li
Pairing symmetry plays a central role in the study of superconductivity. It is usually characterized by integer partial-waves, for example, -, -, -waves. In this article,…
Monopole Charge Density Wave States in Weyl Semimetals
Eric Bobrow, Canon Sun, Yi Li
We study a new class of topological charge density wave states exhibiting monopole harmonic symmetries. The density-wave ordering is equivalent to pairing in the particle-hole chan…
Exact Results on Itinerant Ferromagnetism and the 15-puzzle Problem
Eric Bobrow, Keaton Stubis, Yi Li
We apply a result from graph theory to prove exact results about itinerant ferromagnetism. Nagaoka's theorem of ferromagnetism is extended to all non-separable graphs except single…
Current in a Spin-orbit-coupling System
Yi Li, Ruibao Tao
The formulae of particle current as well as spin- and angular momentum currents are studied for most spin-orbit coupling (SOC) systems. It is shown that the conventional expression…