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Local quantum critical point in the pseudogap anderson model: finite-T dynamics and omega/T scaling.

Abstract:

The pseudogap Anderson impurity model is a paradigm for locally critical quantum phase transitions. Within the framework of the local moment approach we study its finite-T dynamics, as embodied in the single-particle spectrum, in the vicinity of the symmetric quantum critical point (QCP) separating generalized Fermi liquid (Kondo screened) and local moment phases. The scaling spectra in both phases, and at the QCP itself, are obtained analytically. A key result is that pure omega/T scaling ob...

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Publication status:
Published

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Publisher copy:
10.1021/jp0457388

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
Journal:
The journal of physical chemistry. B
Volume:
109
Issue:
14
Pages:
6564-6572
Publication date:
2005-04-05
DOI:
EISSN:
1520-5207
ISSN:
1520-6106
URN:
uuid:a575f0e6-cff1-49f1-974e-e951203fbee4
Source identifiers:
33551
Local pid:
pubs:33551
Language:
English

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