Comment on “Exchange instabilities in semiconductor double-quantum-well systems”
- 15 September 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 58 (11) , 7450-7452
- https://doi.org/10.1103/physrevb.58.7450
Abstract
Semiconductor double-quantum-well systems in the low-density regime are prone to magnetic and charge-transfer instabilities. While recent calculations, using both a pseudospin approach and a local-spin-density approximation (LSDA) [Phys. Rev. B 55, 4506 (1997)] seem to rule out the instability towards a monolayer configuration, the present contribution is devoted to refuting this conclusion in the LSDA. In this approximation, it is found that there is a charge-transfer instability for barrier widths that are neither too small nor too large.Keywords
This publication has 10 references indexed in Scilit:
- Novel Magnetic Instabilities in Semiconductor Double Quantum WellsPhysical Review Letters, 1997
- Exchange instabilities in semiconductor double-quantum-well systemsPhysical Review B, 1997
- Spontaneous interlayer coherence in double-layer quantum Hall systems: Charged vortices and Kosterlitz-Thouless phase transitionsPhysical Review B, 1995
- Theories for in single- and double-layer systemsSurface Science, 1994
- Collapse of integer Hall gaps in a double-quantum-well systemPhysical Review Letters, 1990
- Self-interaction correction to density-functional approximations for many-electron systemsPhysical Review B, 1981
- Ground State of the Electron Gas by a Stochastic MethodPhysical Review Letters, 1980
- A local exchange-correlation potential for the spin polarized case. iJournal of Physics C: Solid State Physics, 1972
- Self-Consistent Equations Including Exchange and Correlation EffectsPhysical Review B, 1965
- Inhomogeneous Electron GasPhysical Review B, 1964