Nonlinearity and hysteresis in longitudinal current transport in CoSi/GaAs alloy layers deposited from laser plasma

作者：Demidov E S^*; Gusev S N; Podol'skii V V; Lesnikov V P; Sdobnyakov V V; Budarin L I; Tronov A A; Skopin E V

来源：Physics of the Solid State, 2013, 55(7): 1407-1411.

DOI：10.1134/S106378341307010X

The electron transport properties of nanosized CoSi alloy layers deposited at a lowered temperature (350A degrees C) from laser plasma onto single-crystalline gallium arsenide have been studied. An asymmetry of the current-voltage characteristic (CVC) in the longitudinal current transport in such layers has been found, which indicates the spin polarization of charge carriers, and a substantial (up to 18%) nonlinearity and a hysteresis (up to 4%) have been revealed both at room temperature and at 77 K for comparatively low current densities (up to 5 x 10(4) A/cm(2)). In repeated cycles of CVC measurements at 77 K, irreversible changes in the properties of the layers have been observed.

• 出版日期2013-7