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Pis'ma v Zh. Èksper. Teoret. Fiz., 2015, Volume 102, Issue 2, Pages 120–124 (Mi jetpl4687)  

This article is cited in 1 scientific paper (total in 1 paper)

CONDENSED MATTER

Unusual narrowing of the ESR line width in ordered structures with linear chains of Ge/Si quantum dots

A. F. Zinovievaa, Zh. V. Smaginaa, A. V. Nenashevab, L. V. Kulikcb, A. V. Dvurechenskiiab

a Rzhanov Institute of Semiconductor Physics SB of the RAS, 630090 Novosibirsk, Russia
b Novosibirsk State University, 630090 Novosibirsk, Russia
c Voevodsky Institute of Chemical Kinetics and Combustion SB of the RAS, 630090 Novosibirsk, Russia

Abstract: Electron states in ordered Ge/Si heterostructures with linear chains of quantum dots (QDs) were studied by the electron spin resonance (ESR) method. A new ESR signal with principal $g$-factor values $g_{zz}=1.9993\pm0.0001$, $g_{xx}=g_{yy}=1.9990\pm0.0001$ was detected. Unlike non-ordered QD structures, where ESR line broadening is usually observed (evidence of Dyakonov–Perel mechanism efficiency), the structures under study demonstrate the narrowing of ESR line when the external magnetic field deviates from the growth direction. The ESR line width is $\Delta H=1.2$ Oe for perpendicular magnetic field (along the growth direction) and $\Delta H=0.8 $ Oe for in-plane magnetic field. The narrowing of ESR line can be explained by combination of two mechanisms. The first one is suppression of Dyakonov–Perel spin relaxation due to a settled direction of electron motion and finiteness of QD chains. The second one is cancelation of the wave function shrinking effect with decreasing the perpendicular component of the magnetic field.

DOI: https://doi.org/10.7868/S0370274X1514009X

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English version:
Journal of Experimental and Theoretical Physics Letters, 2015, 102:2, 108–112

Bibliographic databases:

Received: 04.06.2015
Revised: 15.06.2015
Language:

Citation: A. F. Zinovieva, Zh. V. Smagina, A. V. Nenashev, L. V. Kulik, A. V. Dvurechenskii, “Unusual narrowing of the ESR line width in ordered structures with linear chains of Ge/Si quantum dots”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:2 (2015), 120–124; JETP Letters, 102:2 (2015), 108–112

Citation in format AMSBIB
\Bibitem{ZinSmaNen15}
\by A.~F.~Zinovieva, Zh.~V.~Smagina, A.~V.~Nenashev, L.~V.~Kulik, A.~V.~Dvurechenskii
\paper Unusual narrowing of the ESR line width in ordered structures with linear chains of Ge/Si quantum dots
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2015
\vol 102
\issue 2
\pages 120--124
\mathnet{http://mi.mathnet.ru/jetpl4687}
\crossref{https://doi.org/10.7868/S0370274X1514009X}
\elib{http://elibrary.ru/item.asp?id=24156804}
\transl
\jour JETP Letters
\yr 2015
\vol 102
\issue 2
\pages 108--112
\crossref{https://doi.org/10.1134/S0021364015140131}
\isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000361757800009}
\elib{http://elibrary.ru/item.asp?id=24951259}
\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-84942313785}


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    Citing articles on Google Scholar: Russian citations, English citations
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    This publication is cited in the following articles:
    1. Zinovieva A.F. Nenashev A.V. Dvurechenskii A.V., Phys. Rev. B, 93:15 (2016), 155305  crossref  isi  elib  scopus
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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