954 citations · 7.3k across the 85 of their papers we have counts for
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Topological Kondo Insulators
Maxim Dzero, Kai Sun, Victor Galitski +1
Kondo insulators are particularly simple type of heavy electron material, where a filled band of heavy quasiparticles gives rise to a narrow band insulator. Starting with the Ander…
Stable topological phases in a family of two-dimensional fermion models
Meng Cheng, Kai Sun, Victor Galitski +1
We show that a large class of two-dimensional spinless fermion models exhibit topological superconducting phases characterized by a non-zero Chern number. More specifically, we con…
Topological phases of dipolar particles in elongated Wannier orbitals
Kai Sun, Erhai Zhao, W. Vincent Liu
We show that topological phases with fractional excitations can occur in two-dimensional ultracold dipolar gases on a particular class of optical lattices. Due to the dipolar inter…
Spin-charge interplay in electronic liquid crystals: fluctuating spin stripe driven by charge nematic
Kai Sun, Michael J. Lawler, Eun-Ah Kim
We study the interplay between charge and spin ordering in electronic liquid crystalline states with a particular emphasis on fluctuating spin stripe phenomena observed in recent n…
Topological Insulators and Nematic Phases from Spontaneous Symmetry Breaking in 2D Fermi Systems with a Quadratic Band Crossing
Kai Sun, Hong Yao, Eduardo Fradkin +1
We investigate the stability of a quadratic band-crossing point (QBCP) in 2D fermionic systems. At the non-interacting level, we show that a QBCP exists and is topologically stable…
Biaxial nematic phases in ultracold dipolar Fermi gases
Benjamin M. Fregoso, Kai Sun, Eduardo Fradkin +1
Ultracold dipolar Fermi gases represent relatively unexplored, strongly correlated systems arising from long-range and anisotropic interactions. We demonstrate the possibility of a…