Electron-hole liquid in the hexaborides

Authors
Zhitomirsky, ME Rice, TM
Citation
Me. Zhitomirsky et Tm. Rice, Electron-hole liquid in the hexaborides, PHYS REV B, 62(3), 2000, pp. 1492-1495
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
3
Year of publication
2000
Pages
1492 - 1495
Database
ISI
SICI code
0163-1829(20000715)62:3<1492:ELITH>2.0.ZU;2-S
Abstract
We investigate the energetics of the electron-hole liquid in stoichiometric divalent-metal hexaborides. The ground-state energy of an electron-hole pl asma is calculated using the random-phase approximation and Hubbard schemes and compared to the binding energy of a single exciton. Intervalley scatte ring processes play an important role in increasing this binding energy and stabilizing a dilute Bose gas of excitons.