A local moment approach to the Anderson model
A theory is developed for the single-particle spectra of the symmetric Anderson model, in which local moments are introduced explicitly from the outset. Dynamical coupling of single-particle processes to low-energy spin-flip excitations leads, within the framework of a two-self-energy description, t...
| Main Authors: | , , |
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| Format: | Journal article |
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1998
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| _version_ | 1826302844253241344 |
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| author | Logan, D Eastwood, M Tusch, M |
| author_facet | Logan, D Eastwood, M Tusch, M |
| author_sort | Logan, D |
| collection | OXFORD |
| description | A theory is developed for the single-particle spectra of the symmetric Anderson model, in which local moments are introduced explicitly from the outset. Dynamical coupling of single-particle processes to low-energy spin-flip excitations leads, within the framework of a two-self-energy description, to a theory in which both low- and high-energy spectral features are simultaneously captured, while correctly preserving Fermi liquid behaviour at low energies. The atomic limit, non-interacting limit and strong-coupling behaviour of the spectrum are each recovered. For strong coupling in particular, both the exponential asymptotics of the Kondo resonance and concomitant many-body broadening of the Hubbard satellite bands are shown to arise naturally within the present approach. |
| first_indexed | 2024-03-07T05:53:35Z |
| format | Journal article |
| id | oxford-uuid:e9c12a3c-b95c-4c19-ae4d-ce1fc033ac9e |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:53:35Z |
| publishDate | 1998 |
| record_format | dspace |
| spelling | oxford-uuid:e9c12a3c-b95c-4c19-ae4d-ce1fc033ac9e2022-03-27T10:56:28ZA local moment approach to the Anderson modelJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e9c12a3c-b95c-4c19-ae4d-ce1fc033ac9eSymplectic Elements at Oxford1998Logan, DEastwood, MTusch, MA theory is developed for the single-particle spectra of the symmetric Anderson model, in which local moments are introduced explicitly from the outset. Dynamical coupling of single-particle processes to low-energy spin-flip excitations leads, within the framework of a two-self-energy description, to a theory in which both low- and high-energy spectral features are simultaneously captured, while correctly preserving Fermi liquid behaviour at low energies. The atomic limit, non-interacting limit and strong-coupling behaviour of the spectrum are each recovered. For strong coupling in particular, both the exponential asymptotics of the Kondo resonance and concomitant many-body broadening of the Hubbard satellite bands are shown to arise naturally within the present approach. |
| spellingShingle | Logan, D Eastwood, M Tusch, M A local moment approach to the Anderson model |
| title | A local moment approach to the Anderson model |
| title_full | A local moment approach to the Anderson model |
| title_fullStr | A local moment approach to the Anderson model |
| title_full_unstemmed | A local moment approach to the Anderson model |
| title_short | A local moment approach to the Anderson model |
| title_sort | local moment approach to the anderson model |
| work_keys_str_mv | AT logand alocalmomentapproachtotheandersonmodel AT eastwoodm alocalmomentapproachtotheandersonmodel AT tuschm alocalmomentapproachtotheandersonmodel AT logand localmomentapproachtotheandersonmodel AT eastwoodm localmomentapproachtotheandersonmodel AT tuschm localmomentapproachtotheandersonmodel |