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Non-Fermi liquid and topological states with strong spin-orbit coupling
Eun-Gook Moon, Cenke Xu, Yong Baek Kim +1
We argue that a class of strongly spin-orbit coupled materials, including some pyrochlore iridates and the inverted band gap semiconductor HgTe, may be described by a minimal model…
Ground States of Spin-1/2 Triangular Antiferromagnets in a Magnetic Field
Ru Chen, Hyejin Ju, Hong-Chen Jiang +2
We use a combination of density matrix renormalization group calculations and analytical approaches to study a simplified model for a spatially anisotropic spin-1/2 triangular latt…
Toward an artificial Mott insulator: Correlations in confined, high-density electron liquids in SrTiO3
Pouya Moetakef, Clayton A. Jackson, Jinwoo Hwang +3
We investigate correlation physics in high-density, two-dimensional electron liquids that reside in narrow SrTiO3 quantum wells. The quantum wells are remotely doped via an interfa…
Identifying Topological Order by Entanglement Entropy
Hong-Chen Jiang, Zhenghan Wang, Leon Balents
Topological phases are unique states of matter incorporating long-range quantum entanglement, hosting exotic excitations with fractional quantum statistics. We report a practical m…
Generic quantum spin ice
SungBin Lee, Shigeki Onoda, Leon Balents
We consider possible exotic ground states of quantum spin ice as realized in rare earth pyrochlores. Prior work in Phys. Rev. Lett. 108, 037202 introduced a gauge mean field theory…
Definitive Evidence for Order-by-Quantum-Disorder in Er2Ti2O7
Lucile Savary, Kate A. Ross, Bruce D. Gaulin +2
Here we establish the systematic existence of a U(1) degeneracy of all symmetry-allowed Hamiltonians quadratic in the spins on the pyrochlore lattice, at the mean-field level. By e…