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Phys Rev Lett
; 84(6): 1264-7, 2000 Feb 07.
Article
in English
| MEDLINE
| ID: mdl-11017494
ABSTRACT
The theory of doped excitonic insulators is reinvestigated in light of recent experiments on hexaborides. For the appropriate valley-degenerate X3,X'3 band structure, "intravalley" condensation is energetically favored. Ferromagnetism occurs upon doping due to the quenching of kinetic energy at the otherwise direct first-order excitonic insulator-metal transition. The phase diagram includes states of spatially inhomogeneous density and magnetization at low temperatures.
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Phys Rev B Condens Matter
; 54(10): 7328-7333, 1996 Sep 01.
Article
in English
| MEDLINE
| ID: mdl-9984355
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Phys Rev B Condens Matter
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Article
in English
| MEDLINE
| ID: mdl-9983873
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Phys Rev B Condens Matter
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Article
in English
| MEDLINE
| ID: mdl-9977118
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Phys Rev B Condens Matter
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Article
in English
| MEDLINE
| ID: mdl-9975077
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Phys Rev B Condens Matter
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Article
in English
| MEDLINE
| ID: mdl-10010352
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Phys Rev B Condens Matter
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Article
in English
| MEDLINE
| ID: mdl-10009683
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Phys Rev B Condens Matter
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Article
in English
| MEDLINE
| ID: mdl-10007785
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Phys Rev B Condens Matter
; 46(9): 5548-5555, 1992 Sep 01.
Article
in English
| MEDLINE
| ID: mdl-10004341
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Phys Rev B Condens Matter
; 46(1): 405-420, 1992 Jul 01.
Article
in English
| MEDLINE
| ID: mdl-10002225
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Phys Rev B Condens Matter
; 45(21): 12636-12639, 1992 Jun 01.
Article
in English
| MEDLINE
| ID: mdl-10001315
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Phys Rev B Condens Matter
; 43(13): 10882-10889, 1991 May 01.
Article
in English
| MEDLINE
| ID: mdl-9996821