1.
Phys Rev Lett
; 85(6): 1302-5, 2000 Aug 07.
Article
in English
| MEDLINE
| ID: mdl-10991537
ABSTRACT
We study transport through a semiconductor superlattice with an electric field parallel to and a magnetic field perpendicular to the growth axis. Using a semiclassical balance equation model with elastic and inelastic scattering, we find that (1) the current-voltage characteristic becomes multistable in a large magnetic field and (2) "hot" electrons display novel features in their current-voltage characteristics, including absolute negative conductivity and a spontaneous dc current at zero bias. We discuss experimental situations providing hot electrons to observe these effects.
2.
Phys Rev B Condens Matter
; 54(15): 10625-10636, 1996 Oct 15.
Article
in English
| MEDLINE
| ID: mdl-9984859