Pruschke, Thomas and Bulla, R. and Jarrell, M. (2000) Low-energy scale of the periodic Anderson model. PHYSICAL REVIEW B, 61 (19). pp. 12799-12809. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Wilson's numerical renormalization-group method is used to study the paramagnetic ground state of the periodic Anderson model within the dynamical mean-field approach. For the particle-hole symmetric model, which is a Kondo insulator, we find that the lattice Kondo scale T-O is strongly enhanced over the impurity scale T-K; T-0/T(K)proportional to exp{1/31}, where I is the Schrieffer-Wolff exchange coupling. In the metallic regime, where the conduction-band filling is reduced from one, we find characteristic signatures of Nozieres' exhaustion scenario, including a strongly reduced lattice Kondo scale, a significant suppression of the states available to screen the S-electron moment, and a Kondo resonance with a strongly enhanced height. However, in contrast to the quantitative predictions of Nozieres, we find that the T(0)proportional to T-K with a coefficient that depends strongly on conduction-band filling.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NUMERICAL RENORMALIZATION-GROUP; DILUTE MAGNETIC-ALLOYS; TRANSITION-METAL OXIDE; INFINITE DIMENSIONS; HUBBARD-MODEL; TEMPERATURE-DEPENDENCE; KONDO SCALE; LATTICE; PHOTOEMISSION; TRANSPORT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 May 2022 09:14 |
| Last Modified: | 03 May 2022 09:14 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42483 |
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