Artículo
Martins, G.B.; Xavier, J.C.; Arrachea, L.; Dagotto, E. "Qualitative understanding of the sign of t′ asymmetry in the extended t-J model and relevance for pairing properties" (2001) Physical Review B - Condensed Matter and Materials Physics. 64(18):1805131-1805134
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Abstract:
Numerical calculations illustrate the effect of the sign of the next-nearest-neighbor hopping term t′ on the two-hole properties of the t-t′-J model. Working mainly on two-leg ladders, in the - 1.0≤t′/t≤1.0 regime, it is shown that introducing t′ in the t-J model is equivalent to effectively renormalizing J, namely t′ negative (positive) is equivalent to an effective t-J model with smaller (bigger) J. This effect is present even at the level of a 2×2 plaquette toy model, and was observed also in calculations on small square clusters. Analyzing the transition probabilities of a hole pair in the plaquette toy model, it is argued that the coherent propagation of such hole pair is enhanced by a constructive interference between both t and t′ for t′>0. This interference is destructive for t′<0.
Registro:
| Documento: | Artículo |
| Título: | Qualitative understanding of the sign of t′ asymmetry in the extended t-J model and relevance for pairing properties |
| Autor: | Martins, G.B.; Xavier, J.C.; Arrachea, L.; Dagotto, E. |
| Filiación: | National High Magnetic Field Laboratary, Department of Physics, Florida State University, Tallahassee, FL 32306, United States Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, Campinas, SP, Brazil Departamento de Fisica, Universidad de Buenos Aires, FCEN, Buenos Aires, DF, Argentina |
| Palabras clave: | article; conductor; electron; mathematical model; molecular dynamics; physics |
| Año: | 2001 |
| Volumen: | 64 |
| Número: | 18 |
| Página de inicio: | 1805131 |
| Página de fin: | 1805134 |
| Título revista: | Physical Review B - Condensed Matter and Materials Physics |
| Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys. |
| ISSN: | 01631829 |
| CODEN: | PRBMD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n18_p1805131_Martins |
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Citas:
---------- APA ----------
Martins, G.B., Xavier, J.C., Arrachea, L. & Dagotto, E. (2001) . Qualitative understanding of the sign of t′ asymmetry in the extended t-J model and relevance for pairing properties. Physical Review B - Condensed Matter and Materials Physics, 64(18), 1805131-1805134.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n18_p1805131_Martins [ ]
---------- CHICAGO ----------
Martins, G.B., Xavier, J.C., Arrachea, L., Dagotto, E. "Qualitative understanding of the sign of t′ asymmetry in the extended t-J model and relevance for pairing properties" . Physical Review B - Condensed Matter and Materials Physics 64, no. 18 (2001) : 1805131-1805134.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n18_p1805131_Martins [ ]
---------- MLA ----------
Martins, G.B., Xavier, J.C., Arrachea, L., Dagotto, E. "Qualitative understanding of the sign of t′ asymmetry in the extended t-J model and relevance for pairing properties" . Physical Review B - Condensed Matter and Materials Physics, vol. 64, no. 18, 2001, pp. 1805131-1805134.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n18_p1805131_Martins [ ]
---------- VANCOUVER ----------
Martins, G.B., Xavier, J.C., Arrachea, L., Dagotto, E. Qualitative understanding of the sign of t′ asymmetry in the extended t-J model and relevance for pairing properties. Phys. Rev. B Condens. Matter Mater. Phys. 2001;64(18):1805131-1805134.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n18_p1805131_Martins [ ]
