Artículo
Dobry, A.; Ibaceta, D. "Mixing of magnetic and phononic excitations in incommensurate spin-Peierls systems" (2001) Physical Review B - Condensed Matter and Materials Physics. 63(14)
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Abstract:
We analyze the excitation spectra of a spin-phonon coupled chain in the presence of a soliton. This is taken as a microscopic model of a spin-Peierls material placed in a high magnetic field. We show, by using a semiclassical approximation in the bosonized representation of the spins, that a trapped magnetic state obtained in the adiabatic approximation is destroyed by dynamical phonons. Low-energy states are phonons trapped by the soliton. When the magnetic gap is smaller than the phonon frequencies, the only low-energy state is a mixed magnetophonon state with the energy of the gap. We emphasize that our results are relevant for the Raman spectra of the inorganic spin-Peierls material CuGeO3. © 2001 The American Physical Society.
Registro:
| Documento: | Artículo |
| Título: | Mixing of magnetic and phononic excitations in incommensurate spin-Peierls systems |
| Autor: | Dobry, A.; Ibaceta, D. |
| Filiación: | Departamento de Física, Instituto de Física Rosario, Universidad Nacional de Rosario, Avenida Pellegrini 250, Rosario, 2000, Argentina Instituto de Astronomía y Física del Espacio, Casilla de Correos 67, Sucursal 28, Buenos Aires, 1428, Argentina |
| Palabras clave: | article; dimerization; magnetic field; magnetism; molecular dynamics; spin labeling |
| Año: | 2001 |
| Volumen: | 63 |
| Número: | 14 |
| DOI: | http://dx.doi.org/10.1103/PhysRevB.63.144404 |
| Título revista: | Physical Review B - Condensed Matter and Materials Physics |
| Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys. |
| ISSN: | 10980121 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v63_n14_p_Dobry |
Referencias:
- Hase, M., Terasaki, I., Uchinokura, K., (1993) Phys. Rev. Lett, 70, p. 3651
- Loa, I., Gromeyar, S., Thomsen, C., Kremer, R.K., (1999) Solid State Commun, 111, p. 181
- Van Loosdrecht, P.H.M., Huant, S., Martinez, G., Dhalenne, G., Revcolvschi, A., (1996) Phys. Rev. B, 54, p. R3730
- Uhrig, G.S., Schulz, H.J., (1996) Phys. Rev. B, 54, p. R9624
- Riera, J., Koval, S., (1996) Phys. Rev. B, 53, p. 770
- Bouzerar, G., Kampf, A.P., Japaridze, G.I., (1999) Phys. Rev. B, 59, p. 6266
- Uhrig, G.S., (1998) Phys. Rev. B, 57 (R14), p. 4
- Uhrig, G.S., unpublished; Augier, D., Poilblanc, D., Sorensen, E., Affleck, I., (1998) Phys. Rev. B, 58, p. 9110
- Bursill, R., McKenzie, R., Hamer, C., (1999) Phys. Rev. Lett, 83, p. 408
- Kiryukhin, V., Keimer, B., Hill, J.P., Vigliante, A., (1996) Phys. Rev. Lett, 76, p. 4608
- Fagot-Revurat, Y., Horvatić, M., Berthier, C., Ségransan, P., Dhalenne, G., Revcolevschi, A., (1996) Phys. Rev. Lett, 77, p. 1861
- Lemmens, P., Eisener, B., Brinkmann, M., Gasparov, L., Güntherodt, G., Donge, P.V., Weiden, M., Steglich, F., (1996) Physica B, 535, pp. 223-224
- Els, G., Uhrig, G.S., Lemmens, P., Vonberg, M., Van Loosdrecht, P.H.M., Güntherodt, G., Fujita, O., Revcolevschi, A., (1998) Europhys. Lett, 43, p. 462
- Dobry, A., Ibaceta, D., (1998) Phys. Rev. B, 58, p. 3124
- Affleck, I., (1990) Fields Strings and Critical Phenomena, p. 563. , edited by E. Brézin and J. Zinn-Justin (North-Holland, Amsterdam
- Nakano, T., Fukuyama, H., (1980) J. Phys. Soc. Jpn, 49, p. 1679
- Nakano, T., Fukuyama, H., (1981) J. Phys. Soc. Jpn, 50, p. 2489
- Feiguin, A., Riera, J., Dobry, A., Ceccatto, H., (1997) Phys. Rev. B, 56 (14), p. 607
- Schöenfeld, F., Bouzerar, G., Uhrig, G., Müller-Hartmann, M., (1998) Eur. Phys. J. B, 5, p. 521
- Fabrizio, M., Mélin, R., Souletie, J., (1999) Eur. Phys. J. B, 10, p. 607
- Uhlig, G., (2000) Physica B, 280, p. 308
- Takano, K., Nakano, T., Fukuyama, H., (1982) J. Phys. Soc. Jpn, 51, p. 366
- Werner, R., Gross, C., Braden, M., (1999) Phys. Rev. B, 59 (14), p. 356
- Muthukumar, V.N., Gros, C., Wenzel, W., Valentí, R., Lemmens, P., Eisener, B., Güntherodt, G., Steglich, F., (1996) Phys. Rev. B, 54, p. R9635
Citas:
---------- APA ----------
Dobry, A. & Ibaceta, D. (2001) . Mixing of magnetic and phononic excitations in incommensurate spin-Peierls systems. Physical Review B - Condensed Matter and Materials Physics, 63(14).http://dx.doi.org/10.1103/PhysRevB.63.144404
---------- CHICAGO ----------
Dobry, A., Ibaceta, D. "Mixing of magnetic and phononic excitations in incommensurate spin-Peierls systems" . Physical Review B - Condensed Matter and Materials Physics 63, no. 14 (2001).http://dx.doi.org/10.1103/PhysRevB.63.144404
---------- MLA ----------
Dobry, A., Ibaceta, D. "Mixing of magnetic and phononic excitations in incommensurate spin-Peierls systems" . Physical Review B - Condensed Matter and Materials Physics, vol. 63, no. 14, 2001.http://dx.doi.org/10.1103/PhysRevB.63.144404
---------- VANCOUVER ----------
Dobry, A., Ibaceta, D. Mixing of magnetic and phononic excitations in incommensurate spin-Peierls systems. Phys. Rev. B Condens. Matter Mater. Phys. 2001;63(14).http://dx.doi.org/10.1103/PhysRevB.63.144404
