Electron Liquid in Double-layer Structures
Keyword(s):
Two layers of electrons or holes trapped at the adjacent interfaces of a gallium arsenide heterostructure can interact through the Coulomb interaction; this leads to a rich phase diagram of ground states, some of which are inhomogeneous in density. The cause of this is associated with each layer's acting as a polarisable background for the other, making it much easier for inhomogeneous configurations to be stable. Even in the uniform liquid phase the presence of a second layer can qualitatively change the nature of the low lying excitation spectrum and lead to large many-body effects in the spectrum, even at very long wavelengths.
Keyword(s):
2020 ◽
1988 ◽
Vol 53
(12)
◽
pp. 2995-3013
Keyword(s):
1992 ◽
Vol 57
(11)
◽
pp. 2302-2308
Keyword(s):
Keyword(s):
1972 ◽
Vol 15
(3)
◽
pp. 204-210
◽