Instabilities in Luttinger liquids
We discuss the appearance of magnetic and charge instabilities, called respectively metamagnetism (MM) and phase separation (PS), in systems which can be described as perturbed Luttinger liquids. We argue that such instabilities can be associated with the vanishing of the effective Fermi velocity v,...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2003
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/129663 |
| Aporte de: |
| id |
I19-R120-10915-129663 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Quantized spin models, including quantum spin frustration Magnetization curves, hysteresis, Barkhausen and related effects |
| spellingShingle |
Física Quantized spin models, including quantum spin frustration Magnetization curves, hysteresis, Barkhausen and related effects Cabra, Daniel Carlos Drut, Joaquín E. Instabilities in Luttinger liquids |
| topic_facet |
Física Quantized spin models, including quantum spin frustration Magnetization curves, hysteresis, Barkhausen and related effects |
| description |
We discuss the appearance of magnetic and charge instabilities, called respectively metamagnetism (MM) and phase separation (PS), in systems which can be described as perturbed Luttinger liquids. We argue that such instabilities can be associated with the vanishing of the effective Fermi velocity v, which in some cases coincides with a divergence of the effective Luttinger parameter K. We analyse in particular an XXZ chain with next-nearest-neighbour interactions in different limits where MM shows up and an extended Hubbard model where PS occurs. Qualitative agreement with previous studies is found. |
| format |
Articulo Articulo |
| author |
Cabra, Daniel Carlos Drut, Joaquín E. |
| author_facet |
Cabra, Daniel Carlos Drut, Joaquín E. |
| author_sort |
Cabra, Daniel Carlos |
| title |
Instabilities in Luttinger liquids |
| title_short |
Instabilities in Luttinger liquids |
| title_full |
Instabilities in Luttinger liquids |
| title_fullStr |
Instabilities in Luttinger liquids |
| title_full_unstemmed |
Instabilities in Luttinger liquids |
| title_sort |
instabilities in luttinger liquids |
| publishDate |
2003 |
| url |
http://sedici.unlp.edu.ar/handle/10915/129663 |
| work_keys_str_mv |
AT cabradanielcarlos instabilitiesinluttingerliquids AT drutjoaquine instabilitiesinluttingerliquids |
| bdutipo_str |
Repositorios |
| _version_ |
1764820454700220416 |