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Resolution of two apparent paradoxes concerning quantum oscillations in underdoped high- superconductors
Xun JIa, Pallab Goswami, Sudip Chakravarty
Recent quantum oscillation experiments in underdoped high temperature superconductors seem to imply two paradoxes. The first paradox concerns the apparent non-existence of the sign…
Quantum oscillations in graphene in the presence of disorder and interactions
Pallab Goswami, Xun Jia, Sudip Chakravarty
Quantum oscillations in graphene is discussed. The effect of interactions are addressed by Kohn's theorem regarding de Haas-van Alphen oscillations, which states that electron-elec…
Glassy states in fermionic systems with strong disorder and interactions
David J. Schwab, Sudip Chakravarty
We study the competition between interactions and disorder in two dimensions. Whereas a noninteracting system is always Anderson localized by disorder in two dimensions, a pure sys…
Competing order, Fermi surface reconstruction, and quantum oscillations in underdoped high temperature superconductors
Ivailo Dimov, Pallab Goswami, Xun Jia +1
We consider incommensurate -density wave order in underdoped high temperature superconductors. We find that Fermi surface reconstruction can correctly capture the phenomenology…
Hidden order revealed in quantum oscillations in cuprate superconductors
Xun Jia, Ivailo Dimov, Pallab Goswami +1
We follow the line of reasoning that hidden broken symmetries are the root of quantum oscillations observed in underdoped superconductors and examine the role of bilayer splitting…
Dissipation and criticality in the lowest Landau level of graphene
Xun Jia, Pallab Goswami, Sudip Chakravarty
The lowest Landau level of graphene is studied numerically by considering a tight-binding Hamiltonian with disorder. The Hall conductance and the longitudinal condu…