Quantum corrections to conductivity: From weak to strong localization / Minkov GM,Rut OE,Germanenko AV,Sherstobitov AA,Zvonkov BN,Uskova EA,Birukov AA // PHYSICAL REVIEW B. - 2002. - V. 65, l. 23.

ISSN/EISSN:

1098-0121 / нет данных

Type:

Article

Abstract:

The results of detailed investigations of the conductivity and Hall effect in gated single-quantum-well GaAs/InGaAs/GaAs heterostructures with two-dimensional electron gas are presented. A successive analysis of the data has shown that the conductivity is diffusive for k(F)l=25-2. The absolute value of the quantum corrections for k(F)l=2 at low temperature is not small; e.g., it is about 70\% of the Drude conductivity at T=0.46 K. For k(F)l=2-0.5 the conductivity looks like the diffusive one. The temperature and magnetic field dependences are qualitatively described within the framework of the self-consistent theory of Vollhardt and Wolfle. The interference correction is therewith close in magnitude to the Drude conductivity so that the conductivity sigma becomes significantly less than e(2)/h. We conclude that the temperature and magnetic field dependences of the conductivity in the whole k(F)l range are due to changes of the quantum corrections.

Author keywords:

NEGATIVE MAGNETORESISTANCE; LIMIT

DOI:

10.1103/PhysRevB.65.235322

Web of Science ID:

ISI:000176767900097

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN 15
Publisher	AMERICAN PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	235322
Keywords-Plus	NEGATIVE MAGNETORESISTANCE; LIMIT
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Sherstobitov, Andrey/K-3838-2013 Minkov, Grigory/K-3855-2013
ORCID-Numbers	Sherstobitov, Andrey/0000-0001-9267-4181 Minkov, Grigory/0000-0001-8090-5309
Number-of-Cited-References	17
Usage-Count-Last-180-days	5
Usage-Count-Since-2013	13
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	572HH