Microscopic theory of the nematic phase in Sr₃Ru₂O₇
In an externally applied magnetic field, ultrapure crystals of the bilayer compound Sr₃Ru₂O₇ undergo a metamagnetic transition below a critical temperature, T*, which varies as a function of the angle between the magnetic field H and the Ru-O planes. Moreover, T* approaches zero when H is perpendicu...
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| Autores principales: | , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2009
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126338 |
| Aporte de: |
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I19-R120-10915-126338 |
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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 |
Ciencias Exactas Física magnetic field ultrapure crystals metamagnetic transition critical temperature microscopic theory nematic phase |
| spellingShingle |
Ciencias Exactas Física magnetic field ultrapure crystals metamagnetic transition critical temperature microscopic theory nematic phase Raghu, Srinivas Paramekanti, Arun Kim, Eun Ah Borzi, Rodolfo Alberto Grigera, Santiago Andrés Mackenzie, Andrew P. Kivelson, Steve Microscopic theory of the nematic phase in Sr₃Ru₂O₇ |
| topic_facet |
Ciencias Exactas Física magnetic field ultrapure crystals metamagnetic transition critical temperature microscopic theory nematic phase |
| description |
In an externally applied magnetic field, ultrapure crystals of the bilayer compound Sr₃Ru₂O₇ undergo a metamagnetic transition below a critical temperature, T*, which varies as a function of the angle between the magnetic field H and the Ru-O planes. Moreover, T* approaches zero when H is perpendicular to the planes. This putative "metamagnetic quantum critical point," however, is pre-empted by a nematic fluid phase with order one resistive anisotropy in the ab plane. In a "realistic" bilayer model with moderate strength local Coulomb interactions, the existence of a sharp divergence of the electronic density of states near a van Hove singularity of the quasi-one-dimensional bands, and the presence of spin-orbit coupling results in a mean-field phase diagram which accounts for many of these experimentally observed phenomena. Although the spin-orbit coupling is not overly strong, it destroys the otherwise near-perfect Fermi-surface nesting and hence suppresses spin-density-wave ordering. |
| format |
Articulo Articulo |
| author |
Raghu, Srinivas Paramekanti, Arun Kim, Eun Ah Borzi, Rodolfo Alberto Grigera, Santiago Andrés Mackenzie, Andrew P. Kivelson, Steve |
| author_facet |
Raghu, Srinivas Paramekanti, Arun Kim, Eun Ah Borzi, Rodolfo Alberto Grigera, Santiago Andrés Mackenzie, Andrew P. Kivelson, Steve |
| author_sort |
Raghu, Srinivas |
| title |
Microscopic theory of the nematic phase in Sr₃Ru₂O₇ |
| title_short |
Microscopic theory of the nematic phase in Sr₃Ru₂O₇ |
| title_full |
Microscopic theory of the nematic phase in Sr₃Ru₂O₇ |
| title_fullStr |
Microscopic theory of the nematic phase in Sr₃Ru₂O₇ |
| title_full_unstemmed |
Microscopic theory of the nematic phase in Sr₃Ru₂O₇ |
| title_sort |
microscopic theory of the nematic phase in sr₃ru₂o₇ |
| publishDate |
2009 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126338 |
| work_keys_str_mv |
AT raghusrinivas microscopictheoryofthenematicphaseinsr3ru2o7 AT paramekantiarun microscopictheoryofthenematicphaseinsr3ru2o7 AT kimeunah microscopictheoryofthenematicphaseinsr3ru2o7 AT borzirodolfoalberto microscopictheoryofthenematicphaseinsr3ru2o7 AT grigerasantiagoandres microscopictheoryofthenematicphaseinsr3ru2o7 AT mackenzieandrewp microscopictheoryofthenematicphaseinsr3ru2o7 AT kivelsonsteve microscopictheoryofthenematicphaseinsr3ru2o7 |
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Repositorios |
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1764820450437758976 |