Suraina Gupta on Muck Rack

Suraina Gupta

As seen in: Physical Review B
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Articles

Gate-tunable crossover between vortex-interaction and pinning dominated regimes in Josephson-coupled lead islands on graphene

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By Suraina Gupta, Santu Prasad Jana, Rukshana Pervin, Anjan Gupta
| Physical Review B
The resistance of a Josephson junction array consisting of randomly distributed lead islands on exfoliated single-layer graphene shows a broad superconducting transition to zero with an onset temperature close to the transition temperature of bulk Pb. The transition region evolves with the back-gate voltage with two peaks in the temperature derivative of the resistance.
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Blocking transition of interface traps in ${\mathrm{MoS}}_{2}/{\mathrm{SiO}}_{2}$ field-effect transistors

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By Anjan Gupta, Santu Prasad Jana, Suraina Gupta
| Physical Review B
The interface traps and associated charge disorder in two-dimensional-material field-effect transitors (FETs), and many other devices, limits their performance but offers interesting physics and potential for applications. The electrical conductivity with gate-sweep in a few-layer MoS2-on-SiO2 FET is found to show an abrupt reduction in hysteresis when cooled. The hysteresis and time-dependent conductivity of the MoS2 channel are modeled using the dynamics of interface traps' occupancy.
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