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Entanglement entropy and multifractality at localization transitions
X. Jia, A. R. Subramaniam, I. A. Gruzberg +1
The von Neumann entanglement entropy is a useful measure to characterize a quantum phase transition. We investigate the non-analyticity of this entropy at disorder-dominated quantu…
Fermi pockets and quantum oscillations of the Hall coefficient in high temperature superconductors
Sudip Chakravarty, Hae-Young Kee
Recent quantum oscillation measurements in high temperature superconductors in high magnetic fields and low temperatures have ushered in a new era. These experiments explore the no…
Rounding by disorder of first-order quantum phase transitions: emergence of quantum critical points
Pallab Goswami, David Schwab, Sudip Chakravarty
We give a heuristic argument for disorder rounding of a first order quantum phase transition into a continuous phase transition. From both weak and strong disorder analysis of the…
Quantum Hall plateau transition in the lowest Landau level of disordered graphene
Pallab Goswami, Xun Jia, Sudip Chakravarty
We investigate, analytically and numerically, the effects of disorder on the density of states and on the localization properties of the relativistic two dimensional fermions in th…