Universität zu Köln

Wang, Jiao ORCID: 0000-0002-9011-6300, Tian, Chushun and Altland, Alexander ORCID: 0000-0002-2991-4805 (2014). Unconventional quantum criticality in the kicked rotor. Phys. Rev. B, 89 (19). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1550-235X

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Abstract

The quantum kicked rotor (QKR) driven by d incommensurate frequencies realizes the universality class of d-dimensional disordered metals. Ford > 3, the system exhibits an Anderson metal-insulator transition which has been observed within the framework of an atom-optics realization. However, the absence of genuine randomness in the QKR reflects in critical phenomena beyond those of the Anderson universality class. Specifically, the system shows strong sensitivity to the algebraic properties of its effective Planck constant (h) over tilde = 4 pi/q. For integer q, the system may be in a globally integrable state, in a supermetallic configuration characterized by diverging response coefficients, Anderson localized, metallic, or exhibit transitions between these phases. We present numerical data for different q values and effective dimensionalities, with the focus on parameter configurations which may be accessible to experimental investigations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wang, Jiao UNSPECIFIED orcid.org/0000-0002-9011-6300 UNSPECIFIED Tian, Chushun UNSPECIFIED UNSPECIFIED UNSPECIFIED Altland, Alexander UNSPECIFIED orcid.org/0000-0002-2991-4805 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-438475
DOI:	10.1103/PhysRevB.89.195105
Journal or Publication Title:	Phys. Rev. B
Volume:	89
Number:	19
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1550-235X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ANDERSON TRANSITION; LOCALIZATION; RESONANCE; DYNAMICS; SYSTEM; CHAOS Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/43847