Investigation on nickel ferrite nanowire device exhibiting negative differential resistance - a first-principles investigation

Abstract

The electronic property of NiFe2O4 nanowire device is investigated through nonequilibrium Green's functions (NEGF) in combination with density functional theory (DFT). The electronic transport properties of NiFe2O4 nanowire are studied in terms of density of states, transmission spectrum and I-V characteristics. The density of states gets modified with the applied bias voltage across NiFe2O4 nanowire device, the density of charge is observed both in the valence band and in the conduction band on increasing the bias voltage. The transmission spectrum of NiFe2O4 nanowire device gives the insights on the transition of electrons at different energy intervals. The findings of the present work suggest that NiFe2O4 nanowire device can be used as negative differential resistance (NDR) device and its NDR property can be tuned with the bias voltage, which may be used in microwave device, memory devices and in fast switching devices.