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Titolo: Interaction potential between dynamic dipoles: Polarized excitons in strong magnetic fields - art. no. 115302
Autore: Olivares-Robles, MA; Ulloa, SE;
- Indirizzi:
- Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA Ohio Univ Athens OH USA 45701 v, Dept Phys & Astron, Athens, OH 45701 USA Ohio Univ, Condensed Matter & Surface Sci Program, Athens, OH 45701 USA Ohio Univ Athens OH USA 45701 & Surface Sci Program, Athens, OH 45701 USA
- Titolo Testata:
- PHYSICAL REVIEW B
fascicolo: 11,
volume: 6411,
anno: 2001,
pagine: 5302 -
- SICI:
- 0163-1829(20010915)6411:11<5302:IPBDDP>2.0.ZU;2-N
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- COUPLED QUANTUM-WELLS; DIELECTRIC FUNCTION; ELECTRONS; SYSTEMS; CONDENSATION; TRANSITIONS; BOSONS; HOLES; STATE;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- --discip_EC--
- Citazioni:
- 25
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Olivares-Robles, MA Univ Autonoma Estado Morelos, Fac Ciencias, Dept Fis, Av Univ 1001,Col Chamilpa, Cuernavaca 62210, Morelos, Mexico Univ Autonoma Estado Morelos Av Univ 1001,Col Chamilpa Cuernavaca Morelos Mexico 62210
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- Citazione:
- M.A. Olivares-Robles e S.E. Ulloa, "Interaction potential between dynamic dipoles: Polarized excitons in strong magnetic fields - art. no. 115302", PHYS REV B, 6411(11), 2001, pp. 5302
Abstract
The interaction potential of a two-dimensional system of excitons with spatially separated electron-hole layers is considered in the strong magnetic field limit. The excitons are assumed to have free dynamics in the x-y plane, while being constrained or "polarized" in the z direction. The model simulates semiconductor double layer systems under strong magnetic field normal to the layers. The residual interaction between excitons exhibits interesting features, arising from the coupling of the center-of-mass and internaldegrees of freedom of the exciton in the magnetic field. This coupling induces a dynamical dipole moment proportional to the center-of-mass magnetic moment of the exciton. We show the explicit dependence of the interexciton potential matrix elements, and discuss the underlying physics. The unusual features of the interaction potential would be reflected in the collective response and nonequilibrium properties of such system.
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Documento generato il 19/05/13 alle ore 20:26:55