13 citations · 27 across the 6 of their papers we have counts for
3 papers · 1 filter
Topological materials with extensive flat-band surface states
Protyush Nandi, Subinay Dasgupta
Materials that have zero-energy flat band states on the surface may show surface superconductivity. Here we report a theoretical observation that a Hamiltonian describing a thin sl…
Signature of quantum phase transition manifested in quantum fidelity at finite temperature
Protyush Nandi, Sirshendu Bhattacharyya, Subinay Dasgupta
The signature of quantum phase transition is generally wiped out at finite temperature. A few quantities that have been observed to carry this signature through a nonanalytic behav…
Detection of quantum phase boundary at finite temperatures in integrable spin models
Protyush Nandi, Sirshendu Bhattacharyya, Subinay Dasgupta
Quantum phase transitions occur when quantum fluctuation destroys order at zero temperature. With an increase in temperature, normally the thermal fluctuation wipes out any signs o…