Title :
Electrical conduction and magnetic moment of a biased double-wire system
Author :
Smirnov, Anatoly Yu. ; Mourokh, Lev G. ; Horing, Norman J M
Author_Institution :
D- WaveSystems Inc, Vancouver, BC, Canada
Abstract :
We analyze electron transport and magnetic response of a semiconductor double-wire system in the case when the wires are connected to leads in series, with tunnel coupling between them. Explicit analytical expressions for the lead-to-lead current and the average magnetic moment induced by an applied magnetic field are obtained. We show that at low temperature the magnetic response of such a system can be either diamagnetic or paramagnetic depending on the applied bias and the equilibrium chemical potential of the leads.
Keywords :
Green´s function methods; chemical potential; local moments; semiconductor quantum wires; tunnelling; applied bias; biased double-wire system; diamagnetic response; electrical conduction; electron transport; equilibrium chemical potential; lead-to-lead current; low temperature; magnetic moment; magnetic response; nonequilibrium Green´s function; paramagnetic response; semiconductor double-wire system; tunnel coupling; Couplings; Electrons; Lead compounds; Magnetic analysis; Magnetic fields; Magnetic moments; Magnetic semiconductors; Paramagnetic materials; Temperature dependence; Wires;
Conference_Titel :
Nanotechnology, 2002. IEEE-NANO 2002. Proceedings of the 2002 2nd IEEE Conference on
Print_ISBN :
0-7803-7538-6
DOI :
10.1109/NANO.2002.1032281
