The conductivity of disordered-2D systems: From weak to strong localization / Minkov GM,Germanenko AV,Rut OE,Sherstobitova AA,Zvonkov BN,Uskova EA,Birukov AA // . - 2003. - V. 5023, l. . - P. 482-485.

ISSN/EISSN:

0277-786X / нет данных

Type:

Proceedings Paper

Abstract:

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 - 2.5. The absolute value of the quantum corrections for k(F)l = 2.5 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 < 2.5 the conductivity looks like diffusive one. The temperature and magnetic field dependences are qualitatively described within the framework of the self-consistent theory by Vollhardt and Wolfle. The interference correction is therewith close in magnitude to the Drude conductivity so that the conductivity a becomes significantly less than e(2)/h. We conclude that the temperature and magnetic field dependences of conductivity in the whole studied k(F)l range are due to changes of quantum corrections and that transition to hopping conductivity occurs at lower conductivity value.

Author keywords:

quantum corrections; Anderson localization HOPPING CONDUCTIVITY

DOI:

10.1117/12.514546

Web of Science ID:

ISI:000184080700128

Соавторы в МНС:

Другие поля

Поле	Значение
Editor	Alferov, ZI and Esaki, L
Booktitle	10TH INTERNATIONAL SYMPOSIUM ON NANOSTRUCTURES: PHYSICS AND TECHNOLOGY
Series	PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
Note	10th International Symposium on Nanostructures, ST PETERSBURG, RUSSIA, JUN 17-21, 2002
Organization	Russian Acad Sci; Russian Federat, Minist Ind, Sci \& Technol; Russian Fdn Basic Res; AIXTRON AG; European Off Aerosp Res \& Dev; USAF Res Lab; USN Off Res, Europe; USA, Res Lab European Res Off; SPIE; SPIE Russian Chapter
Publisher	SPIE-INT SOC OPTICAL ENGINEERING
Address	1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Language	English
ISBN	0-8194-4824-9
Keywords-Plus	HOPPING CONDUCTIVITY
Research-Areas	Optics; Physics
Web-of-Science-Categories	Optics; Physics, Condensed Matter
ResearcherID-Numbers	Minkov, Grigory/K-3855-2013
ORCID-Numbers	Minkov, Grigory/0000-0001-8090-5309
Number-of-Cited-References	8
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	1
Doc-Delivery-Number	BX04Y