Unconventional superconductivity in a strongly correlated band-insulator without doping
Anwesha Chattopadhyay, H. R. Krishnamurthy, Arti Garg
SciPost Phys. Core 4, 009 (2021) · published 28 April 2021
- doi: 10.21468/SciPostPhysCore.4.2.009
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Abstract
We present a novel route for attaining unconventional superconductivity in a strongly correlated system without doping. In a simple model of a correlated band insulator at half-filling we demonstrate, based on a generalization of the projected wavefunctions method, that superconductivity emerges for a broad range of model parameters when e-e interactions and the bare band-gap are both much larger than the kinetic energy, provided the system has sufficient frustration against the magnetic order. As the interactions are tuned, the superconducting phase appears sandwiched between the correlated band insulator followed by a paramagnetic metal on one side, and a ferrimagnetic metal, antiferromagnetic half-metal, and Mott insulator phases on the other side
Cited by 1
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Anwesha Chattopadhyay,
- 2 H R krishnamurthy,
- 1 Arti Garg
- 1 Saha Institute of Nuclear Physics [SINP]
- 2 भारतीय विज्ञान संस्थान / Indian Institute of Science Bangalore [IISc]