50 citations · 222 across the 24 of their papers we have counts for
7 papers · 1 filter
Blocking transition of interface traps in MoS-on-SiO FETs
Santu Prasad Jana, Suraina Gupta, Anjan K. Gupta
Electrical conductivity with gate-sweep in a few layer MoS-on-SiO field-effect-transistor shows an abrupt reduction in hysteresis when cooled. The hysteresis and time depen…
Magnetization Reversal Across Multiple Serial Barriers in a Single FeO Nanoparticle
Sagar Paul, Ganesh Kotagiri, Rini Ganguly +4
Depinning of nanoscale magnetic textures, such as domain walls, vortices and skyrmions, is of paramount importance for magnetic storage and information processing. We measure time-…
STM/S study of electronic inhomogeneity evolution with gate voltage in graphene: role of screening and charge-state of interface defects
Anil Kumar Singh, Anjan Kumar Gupta
Evolution of electronic inhomogeneities with back-gate voltage in graphene on SiO was studied using room temperature scanning tunneling microscopy and spectroscopy. The reversa…
Reversible control of interface-water induced carrier density in graphene-on-SiO by thermal cycling under gate-voltage
Anil Kumar Singh, Anjan Kumar Gupta
A reversible handle on graphene carrier density, other than the gate electric field, is desirable for memory applications of graphene. Our experiments show that the commonly observ…
Inhomogeneous screening of gate electric field by interface states in graphene FETs
Anil Kumar Singh, Anjan K. Gupta
The electronic states at graphene-SiO interface and their inhomogeneity was investigated using the back-gate-voltage dependence of local tunnel spectra acquired with a scanning…
Tip induced doping effects in local tunnel spectra of graphene
Shyam K. Choudhury, Anjan K. Gupta
We report on tip induced doping in local tunnel spectra of single layer graphene (SLG) with tunable back-gate using room temperature scanning tunneling microscopy and spectroscopy…
Scanning Tunneling Microscopy and Spectroscopy study of charge inhomogeneities in bilayer Graphene
Shyam K. Choudhary, Anjan K. Gupta
We report room temperature scanning tunneling microscopy and spectroscopy study of bilayer graphene prepared by mechanical exfoliation on SiO/Si surface and electrically contac…