Slave boson study of the doped Hubbard model
We use the Kotliar-Ruckenstein slave boson formalism to study the phase diagram of the doped antiferromagnetic Mott insulator at zero and finite temperatures. We obtain the commensurate magnetic phase diagram as a function of doping and temperature. At higher doping and temperatures we find a parama...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10980121_v76_n19_p_Camjayi |
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todo:paper_10980121_v76_n19_p_Camjayi2023-10-03T16:06:04Z Slave boson study of the doped Hubbard model Camjayi, A. Rozenberg, M.J. Chitra, R. We use the Kotliar-Ruckenstein slave boson formalism to study the phase diagram of the doped antiferromagnetic Mott insulator at zero and finite temperatures. We obtain the commensurate magnetic phase diagram as a function of doping and temperature. At higher doping and temperatures we find a paramagnetic metallic phase. Reducing doping and temperature, we find antiferromagnetic phases with both metallic and insulating solutions. We calculate the electronic density of states in various regions of the phase diagram. We use our results for the electronic compressibility and magnetic susceptibility to analyze the stability of the various phases obtained within this mean field formalism. We find various parameter regimes where the method fails to provide physical solutions. We argue that those regions correspond to more exotic phases that cannot be described within the current mean field theory. © 2007 The American Physical Society. Fil:Camjayi, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rozenberg, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10980121_v76_n19_p_Camjayi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We use the Kotliar-Ruckenstein slave boson formalism to study the phase diagram of the doped antiferromagnetic Mott insulator at zero and finite temperatures. We obtain the commensurate magnetic phase diagram as a function of doping and temperature. At higher doping and temperatures we find a paramagnetic metallic phase. Reducing doping and temperature, we find antiferromagnetic phases with both metallic and insulating solutions. We calculate the electronic density of states in various regions of the phase diagram. We use our results for the electronic compressibility and magnetic susceptibility to analyze the stability of the various phases obtained within this mean field formalism. We find various parameter regimes where the method fails to provide physical solutions. We argue that those regions correspond to more exotic phases that cannot be described within the current mean field theory. © 2007 The American Physical Society. |
| format |
JOUR |
| author |
Camjayi, A. Rozenberg, M.J. Chitra, R. |
| spellingShingle |
Camjayi, A. Rozenberg, M.J. Chitra, R. Slave boson study of the doped Hubbard model |
| author_facet |
Camjayi, A. Rozenberg, M.J. Chitra, R. |
| author_sort |
Camjayi, A. |
| title |
Slave boson study of the doped Hubbard model |
| title_short |
Slave boson study of the doped Hubbard model |
| title_full |
Slave boson study of the doped Hubbard model |
| title_fullStr |
Slave boson study of the doped Hubbard model |
| title_full_unstemmed |
Slave boson study of the doped Hubbard model |
| title_sort |
slave boson study of the doped hubbard model |
| url |
http://hdl.handle.net/20.500.12110/paper_10980121_v76_n19_p_Camjayi |
| work_keys_str_mv |
AT camjayia slavebosonstudyofthedopedhubbardmodel AT rozenbergmj slavebosonstudyofthedopedhubbardmodel AT chitrar slavebosonstudyofthedopedhubbardmodel |
| _version_ |
1782029797723996160 |