Abstract:
We investigate coupling of localized spins in a semiconductor quantum dot embedded in a microcavity. The cavity mode and the quantum dot exciton are coupled forming a polariton, whereas excitons interact with localized spins via exchange. The Hamiltonian, which treats all degrees of freedom quantum mechanically, is solved exactly. Main results, for up to three photons and cavities with a finite quality factor, are: a) at sufficiently low temperatures a finite anisotropic exchange interaction between spins is induced for small exciton occupation numbers, b) a finite quality factor induces an abrupt change to and fro between ferromagnetic and antiferromagnetic exchange interaction, and, c) the spin-spin correlation undergoes non-trivial changes upon increasing the number of photons from one to three. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.
Registro:
Documento: |
Artículo
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Título: | Anisotropic exchange interaction induced by a few photons in semiconductor microcavities |
Autor: | Chiappe, G.; Louis, E.; Anda, E.V. |
Filiación: | Departamento de Física Aplicada, Instituto Universitario de Materiales, Universidad de Alicante, Alicante 03690, Spain Departamento de Física J. J. Giambiagi, Facultad de Ciencias Exactas, Ciudad Universitaria, 1428 Buenos Aires, Argentina Departamento de Física, Pontificia Universidade Católica do Rio de Janeiro (PUC-Rio), Caixa Postal: 38071, Rio de Janeiro 22452-970, Brazil
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Año: | 2006
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Volumen: | 243
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Número: | 15
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Página de inicio: | 3885
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Página de fin: | 3889
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DOI: |
http://dx.doi.org/10.1002/pssb.200671575 |
Título revista: | Physica Status Solidi (B) Basic Research
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Título revista abreviado: | Phys. Status Solidi B Basic Res.
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ISSN: | 03701972
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03701972_v243_n15_p3885_Chiappe |
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Citas:
---------- APA ----------
Chiappe, G., Louis, E. & Anda, E.V.
(2006)
. Anisotropic exchange interaction induced by a few photons in semiconductor microcavities. Physica Status Solidi (B) Basic Research, 243(15), 3885-3889.
http://dx.doi.org/10.1002/pssb.200671575---------- CHICAGO ----------
Chiappe, G., Louis, E., Anda, E.V.
"Anisotropic exchange interaction induced by a few photons in semiconductor microcavities"
. Physica Status Solidi (B) Basic Research 243, no. 15
(2006) : 3885-3889.
http://dx.doi.org/10.1002/pssb.200671575---------- MLA ----------
Chiappe, G., Louis, E., Anda, E.V.
"Anisotropic exchange interaction induced by a few photons in semiconductor microcavities"
. Physica Status Solidi (B) Basic Research, vol. 243, no. 15, 2006, pp. 3885-3889.
http://dx.doi.org/10.1002/pssb.200671575---------- VANCOUVER ----------
Chiappe, G., Louis, E., Anda, E.V. Anisotropic exchange interaction induced by a few photons in semiconductor microcavities. Phys. Status Solidi B Basic Res. 2006;243(15):3885-3889.
http://dx.doi.org/10.1002/pssb.200671575