Dephasing and interwell transitions in double quantum well heterostructures / Minkov G. M.,Germanenko A. V.,Rut O. E.,Sherstobitov A. A.,Bakarov A. K.,Dmitriev D. V. // PHYSICAL REVIEW B. - 2010. - V. 82, l. 16.

ISSN/EISSN:

2469-9950 / 2469-9969

Type:

Article

Abstract:

The interference quantum correction to the conductivity in the gated double quantum well AlxGa1-xAs/GaAs/AlxGa1-xAs structures is studied experimentally. The consistent analysis of the interference induced positive magnetoconductivity allows us to find the interwell transition time tau 12 and the electron dephasing time tau(phi). It has been obtained that tau(-1)(12) resonantly depends on the difference between the electron densities in the wells as predicted theoretically. The dephasing time has been determined under the conditions when one and both quantum wells are occupied. The surprising result is that the tau(phi) value in the one well does not depend on the occupation of the other one.

Author keywords:

NEGATIVE MAGNETORESISTANCE; WEAK-LOCALIZATION; 2 DIMENSIONS; CONDUCTIVITY; SYSTEMS; FIELD

DOI:

10.1103/PhysRevB.82.165325

Web of Science ID:

ISI:000283223200008

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT 20
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	165325
EISSN	2469-9969
Keywords-Plus	NEGATIVE MAGNETORESISTANCE; WEAK-LOCALIZATION; 2 DIMENSIONS; CONDUCTIVITY; SYSTEMS; FIELD
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
Funding-Acknowledgement	RFBR {[}08-02-00662, 09-02-00789, 10-02-00481, 10-02-91336]
Funding-Text	We would like to thank I. S. Burmistrov and I. V. Gornyi for illuminating discussions. This work has been supported in part by the RFBR (Grants No. 08-02-00662, No. 09-02-00789, No. 10-02-00481, and No. 10-02-91336).
Number-of-Cited-References	19
Usage-Count-Since-2013	4
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	667VF