Altland, Alexander, Bagrets, Dmitry and Kamenev, Alex (2019). Quantum Criticality of Granular Sachdev-Ye-Kitaev Matter. Phys. Rev. Lett., 123 (10). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We consider granular quantum matter defined by Sachdev-Ye-Kitaev dots coupled via random one-body hopping. Within the framework of Schwarzian field theory, we identify a zero-temperature quantum phase transition between an insulating phase at weak and a metallic phase at strong hopping. The critical hopping strength scales inversely with the number of degrees of freedom on the dots. The increase of temperature out of either phase induces a crossover into a regime of strange metallic behavior.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Altland, AlexanderUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bagrets, DmitryUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kamenev, AlexUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-141746
DOI: 10.1103/PhysRevLett.123.106601
Journal or Publication Title: Phys. Rev. Lett.
Volume: 123
Number: 10
Date: 2019
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
TRANSPORTMultiple languages
Physics, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/14174

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