From spinons to magnons in explicit and spontaneously dimerized antiferromagnetic chains
We reconsider the excitation spectra of a dimerized and frustrated antiferromagnetic Heisenberg chain. This model is taken as the simpler example of competing spontaneous and explicit dimerization relevant for spin-Peierls compounds. The bosonized theory is a two-frequency sine-Gordon field theory....
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
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1999
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| LEADER | 04035caa a22004457a 4500 | ||
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| 001 | PAPER-19664 | ||
| 003 | AR-BaUEN | ||
| 005 | 20250225100142.0 | ||
| 008 | 190411s1999 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0000725664 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Dobry, Ariel Oscar | |
| 245 | 1 | 5 | |a From spinons to magnons in explicit and spontaneously dimerized antiferromagnetic chains |
| 260 | |c 1999 | ||
| 504 | |a Sorensen, E., Affleck, I., Augier, D., Poilblanck, D., (1998) Phys. Rev. B, 58, p. R14 701 | ||
| 504 | |a Augier, D., Hansen, P., Poilblanc, D., Riera, J., Sorensen, E., Uhrig, G., Schonfeld, F., Dagotto, E., (unpublished); Euro. Phys. J. B (to be published); Bouzerar, G., Kampf, A.P., Japaridze, G.I., (1998) Phys. Rev. B, 58, p. 3117 | ||
| 504 | |a Affleck, I., (1998) Dynamical Properties of Unconventional Magnetic Systems, Vol. 349 of NATO Advanced Studies Institute, Series E: Applied Sciences, pp. 123-131. , Kluwer Academic, Dordrecht A. T. Skjeltorp D. Sherrington | ||
| 504 | |a cond-mat/9705127 (unpublished); Hase, M., Terasaki, I., Uchinokura, K., (1993) Phys. Rev. Lett., 70, p. 3651 | ||
| 504 | |a Riera, J., Dobry, A., (1995) Phys. Rev. B, 51, p. 16 098 | ||
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| 504 | |a Riera, J., Koval, S., (1996) Phys. Rev. B, 53, p. 770 | ||
| 504 | |a Uhrig, G.S., Schulz, H.J., (1996) Phys. Rev. B, 54, p. R9624 | ||
| 504 | |a Augier, D., Poilblanc, D., Sorensen, E., Affleck, I., (1998) Phys. Rev. B, 58, p. 9110 | ||
| 504 | |a Dobry, A., Ibaceta, D., (1998) Phys. Rev. B, 58, p. 3124 | ||
| 504 | |a Shastry, B.S., Sutherland, B., (1981) Phys. Rev. Lett., 47, p. 964 | ||
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| 504 | |a I. Affleck, in Fields Strings and Critical Phenomena, edited by E. Brézin and J. Zinn-Justin (North-Holland, Amsterdam, 1990), p. 563 | ||
| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a We reconsider the excitation spectra of a dimerized and frustrated antiferromagnetic Heisenberg chain. This model is taken as the simpler example of competing spontaneous and explicit dimerization relevant for spin-Peierls compounds. The bosonized theory is a two-frequency sine-Gordon field theory. We analyze the excitation spectrum by semiclassical methods. The elementary triplet excitation corresponds to an extended magnon whose radius diverges for vanishing dimerization. The internal oscillations of the magnon give rise to a series of excited states until another magnon is emitted and a two-magnon continuum is reached. We discuss, for weak dimerization, the manner in which the magnon forms as a result of a spinon-spinon interaction potential. © 1999 The American Physical Society. |l eng | |
| 593 | |a Departamento de Física, Universidad Nacional de Rosario, Instituto de Física Rosario, Avenida Pellegrini 250, 2000, Rosario, Argentina | ||
| 593 | |a Instituto de Astronomía y Física del Espacio, Casilla de Correos 67 Sucursal 28, Buenos Aires, 1428, Argentina | ||
| 773 | 0 | |d 1999 |g v. 59 |h pp. 8660-8663 |k n. 13 |p Phys. Rev. B Condens. Matter Mater. Phys. |x 10980121 |t Physical Review B - Condensed Matter and Materials Physics | |
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| 963 | |a VARI | ||