Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets
We calculate the correction to the electronic density of states in a disordered ferromagnetic metal induced by spin-wave mediated interaction between the electrons. Our calculation is valid for the case that the exchange splitting Δ in the ferromagnet is much smaller than the Fermi energy, but we ma...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/12/123036 |
| _version_ | 1797751719736639488 |
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| author | A Ricottone J Danon P W Brouwer |
| author_facet | A Ricottone J Danon P W Brouwer |
| author_sort | A Ricottone |
| collection | DOAJ |
| description | We calculate the correction to the electronic density of states in a disordered ferromagnetic metal induced by spin-wave mediated interaction between the electrons. Our calculation is valid for the case that the exchange splitting Δ in the ferromagnet is much smaller than the Fermi energy, but we make no assumption on the relative magnitude of Δ and the elastic electronic scattering time τ _el . In the ‘clean limit’ Δ τ _el /ℏ ≫ 1 we find a correction with a T ^d ^/2 temperature dependence, where d is the effective dimensionality of the ferromagnet. In the ‘dirty limit’ Δ τ _el /ℏ ≪ 1, the density-of-states correction is a non-monotonous function of energy and temperature. |
| first_indexed | 2024-03-12T16:52:42Z |
| format | Article |
| id | doaj.art-7a2b99f0b16d428e86686ec6075abb50 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:52:42Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-7a2b99f0b16d428e86686ec6075abb502023-08-08T11:05:50ZengIOP PublishingNew Journal of Physics1367-26302013-01-01151212303610.1088/1367-2630/15/12/123036Spin-wave-induced corrections to the electronic density of states in metallic ferromagnetsA Ricottone0J Danon1P W Brouwer2Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin , Arnimallee 14, D-14195 Berlin, GermanyDahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin , Arnimallee 14, D-14195 Berlin, Germany; Niels Bohr International Academy, Niels Bohr Institute, University of Copenhagen , Blegdamsvej 17, DK-2100 Copenhagen, DenmarkDahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin , Arnimallee 14, D-14195 Berlin, GermanyWe calculate the correction to the electronic density of states in a disordered ferromagnetic metal induced by spin-wave mediated interaction between the electrons. Our calculation is valid for the case that the exchange splitting Δ in the ferromagnet is much smaller than the Fermi energy, but we make no assumption on the relative magnitude of Δ and the elastic electronic scattering time τ _el . In the ‘clean limit’ Δ τ _el /ℏ ≫ 1 we find a correction with a T ^d ^/2 temperature dependence, where d is the effective dimensionality of the ferromagnet. In the ‘dirty limit’ Δ τ _el /ℏ ≪ 1, the density-of-states correction is a non-monotonous function of energy and temperature.https://doi.org/10.1088/1367-2630/15/12/123036 |
| spellingShingle | A Ricottone J Danon P W Brouwer Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets New Journal of Physics |
| title | Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets |
| title_full | Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets |
| title_fullStr | Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets |
| title_full_unstemmed | Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets |
| title_short | Spin-wave-induced corrections to the electronic density of states in metallic ferromagnets |
| title_sort | spin wave induced corrections to the electronic density of states in metallic ferromagnets |
| url | https://doi.org/10.1088/1367-2630/15/12/123036 |
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