Disorder and temperature renormalization of interaction contribution to the conductivity in two-dimensional InxGa1-xAs electron systems / Minkov G. M.,Germanenko A. V.,Rut O. E.,Sherstobitov A. A.,Zvonkov B. N. // PHYSICAL REVIEW B. - 2009. - V. 79, l. 23.

ISSN/EISSN:

1098-0121 / нет данных

Type:

Article

Abstract:

We study the electron-electron interaction contribution to the conductivity of two-dimensional In0.2Ga0.8As electron systems in the diffusion regime over the wide conductivity range sigma similar or equal to(1-50)G(0), where G(0) = e(2)/pi h. We show that the data are well described within the framework of the one-loop approximation of the renormalization-group (RG) theory when the conductivity is relatively high, sigma greater than or similar to 15G(0). At lower conductivity, the experimental results are found to be in drastic disagreement with the predictions of this theory. The theory predicts much stronger renormalization of the Landau's Fermi-liquid amplitude, which controls the interaction in the triplet channel, than that observed experimentally. A further contradiction is that the experimental value of the interaction contribution does not practically depend on the magnetic field, whereas the RG theory forecasts its strong decrease due to decreasing diagonal component of the conductivity tensor in the growing magnetic field.

Author keywords:

METAL-INSULATOR-TRANSITION; WEAK-LOCALIZATION

DOI:

10.1103/PhysRevB.79.235335

Web of Science ID:

ISI:000267699500105

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	235335
Keywords-Plus	METAL-INSULATOR-TRANSITION; WEAK-LOCALIZATION
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Minkov, Grigory/K-3855-2013 Sherstobitov, Andrey/K-3838-2013
ORCID-Numbers	Minkov, Grigory/0000-0001-8090-5309 Sherstobitov, Andrey/0000-0001-9267-4181
Funding-Acknowledgement	RFBR {[}07-02-00528, 08-02-00662, 09-02-0789]
Funding-Text	We would like to thank I. S. Burmistrov and I. V. Gornyi for illuminating discussions. This work was supported in part by the RFBR (Grants No. 07-02-00528, No. 08-02-00662, and No. 09-02-0789).
Number-of-Cited-References	27
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	11
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	466XU