Title :
A spin-polarized interband-current source based upon staggered-bandgap heterostructures
Author :
Zhang, Weidong ; Woolard, Dwight ; Zhao, Peiji
Author_Institution :
Dept. of ECE, North Carolina State Univ., Raleigh, NC
Abstract :
A detailed analysis is presented of the spin-splitting in an interband-resonant-tunneling diode (I-RTD). In the framework of a six-band Kane model, the escape process of the heavy-hole valence electrons through the interband channel of a staggered-bandgap heterostructure is described. Numerical simulation results demonstrate the interband current to be highly polarized and define a new I-RTD based spin-polarized source.
Keywords :
constant current sources; energy gap; resonant tunnelling diodes; spin polarised transport; heavy-hole valence electrons; interband channel; interband-resonant-tunneling diode; six-band Kane model; spin-polarized source; spin-splitting; staggered-bandgap heterostructure; Electrons; Lead compounds; Magnetic confinement; Magnetic fields; Nanotechnology; Numerical simulation; Photonic band gap; Polarization; Semiconductor diodes; Tunneling; Interband tunneling; RTD; spin polarization;
Conference_Titel :
Nanotechnology, 2007. IEEE-NANO 2007. 7th IEEE Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-0607-4
Electronic_ISBN :
978-1-4244-0608-1
DOI :
10.1109/NANO.2007.4601174
