Vojta, Matthias ORCID: 0000-0002-5740-831X (2010). Orbital-Selective Mott Transitions: Heavy Fermions and Beyond. J. Low Temp. Phys., 161 (1-2). S. 203 - 233. NEW YORK: SPRINGER/PLENUM PUBLISHERS. ISSN 1573-7357

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Abstract

Quantum phase transitions in metals are often accompanied by violations of Fermi liquid behavior in the quantum critical regime. Particularly fascinating are transitions beyond the Landau-Ginzburg-Wilson concept of a local order parameter. The breakdown of the Kondo effect in heavy-fermion metals constitutes a prime example of such a transition. Here, the strongly correlated f electrons become localized and disappear from the Fermi surface, implying that the transition is equivalent to an orbital-selective Mott transition, as has been discussed for multi-band transition-metal oxides. In this article, available theoretical descriptions for orbital-selective Mott transitions will be reviewed, with an emphasis on conceptual aspects like the distinction between different low-temperature phases and the structure of the global phase diagram. Selected results for quantum critical properties will be listed as well. Finally, a brief overview is given on experiments which have been interpreted in terms of orbital-selective Mott physics.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Vojta, MatthiasUNSPECIFIEDorcid.org/0000-0002-5740-831XUNSPECIFIED
URN: urn:nbn:de:hbz:38-495796
DOI: 10.1007/s10909-010-0206-3
Journal or Publication Title: J. Low Temp. Phys.
Volume: 161
Number: 1-2
Page Range: S. 203 - 233
Date: 2010
Publisher: SPRINGER/PLENUM PUBLISHERS
Place of Publication: NEW YORK
ISSN: 1573-7357
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
QUANTUM PHASE-TRANSITIONS; MULTIPLE-SPIN-EXCHANGE; LIQUID BEHAVIOR; CRITICAL-POINT; LOCAL MOMENTS; ELECTRONS; ITINERANT; SYSTEM; CRITICALITY; LATTICEMultiple languages
Physics, Applied; Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/49579

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