Robust pseudogap across the magnetic field driven superconductor to insulator-like transition in strongly disordered NbN films

Indranil Roy (), Rini Ganguly, Harkirat Singh and Pratap Raychaudhuri
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Indranil Roy: Tata Institute of Fundamental Research
Rini Ganguly: Tata Institute of Fundamental Research
Harkirat Singh: Tata Institute of Fundamental Research
Pratap Raychaudhuri: Tata Institute of Fundamental Research

The European Physical Journal B: Condensed Matter and Complex Systems, 2019, vol. 92, issue 3, 1-7

Abstract: Abstract We investigate the magnetic field evolution of the superconducting state in a strongly disordered NbN thin film which exhibits a magnetic field tuned superconductor to insulator-like transition, employing low temperature scanning tunneling spectroscopy (STS). Transport measurements of the sample reveals a characteristic magnetic field, which separates the low field state where resistance decreases with decreasing temperature, i.e. dR/dT > 0 and a high-field state where dR/dT

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1140/epjb/e2019-90488-0

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