Publications by authors named "Arvind Shankar Kumar"
Article Synopsis
- The study investigates magnetoresistance in a dilute 2D hole system in GaAs/AlGaAs quantum wells, finding it unusual as it increases with temperature.
- At low temperatures (≤ 0.4 K), a negative parabolic magnetoresistance is observed, typical of an interacting Fermi liquid; however, a positive magnetoresistance appears at higher temperatures and continues to grow.
- This unexpected behavior is explained by the viscous transport of 2D holes in a hydrodynamic regime, providing insights into the collective behavior of strongly interacting carriers.
Interfacial Charge Transfer and Gate-Induced Hysteresis in Monochalcogenide InSe/GaSe Heterostructures.
ACS Appl Mater Interfaces
October 2020
Heterostructures of two-dimensional (2D) van der Waals semiconductor materials offer a diverse playground for exploring fundamental physics and potential device applications. In InSe/GaSe heterostructures formed by sequential mechanical exfoliation and stacking of 2D monochalcogenides InSe and GaSe, we observe charge transfer between InSe and GaSe because of the 2D van der Waals interface formation and a strong hysteresis effect in the electron transport through the InSe layer when a gate voltage is applied through the GaSe layer. A gate voltage-dependent conductance decay rate is also observed.
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