Radiation-induced oscillatory magnetoresistance as a sensitive probe of the zero-field spin-splitting in high-mobility <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">G</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">A</mi><mi mathvariant="normal">s</mi><mo>/</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">l</mi></mrow><mrow><mi>x</mi></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Ga</mi></mrow><mrow><mn>1</mn><mi>−</mi><mi>x</mi></mrow></msub></mrow><mi mathvariant="normal">As</mi></math></span> devices

R. G. Mani; J. H. Smet; K. von Klitzing; V. Narayanamurti; W. B. Johnson; V. Umansky

doi:10.1103/PhysRevB.69.193304

Radiation-induced oscillatory magnetoresistance as a sensitive probe of the zero-field spin-splitting in high-mobility ${G a A s / A l}_{x} {Ga}_{1 - x} As$ devices

R. G. Mani, J. H. Smet, K. von Klitzing, V. Narayanamurti, W. B. Johnson, and V. Umansky

Phys. Rev. B 69, 193304 – Published 21 May 2004

Abstract

We suggest an approach for characterizing the zero-field spin splitting of high mobility two-dimensional electron systems, when beats are not readily observable in the Shubnikov–de Haas effect. The zero-field spin splitting and the effective magnetic field seen in the reference frame of the electron are evaluated from a quantitative study of beats observed in radiation-induced magnetoresistance oscillations

Received 3 March 2003

DOI:https://doi.org/10.1103/PhysRevB.69.193304

Authors & Affiliations

R. G. Mani^1,*, J. H. Smet², K. von Klitzing², V. Narayanamurti^1,3, W. B. Johnson⁴, and V. Umansky⁵

¹Harvard University, Gordon McKay Laboratory of Applied Science, 9 Oxford Street, Cambridge, Massachusetts 02138, USA
²Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany
³Harvard University, 217 Pierce Hall, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
⁴Laboratory for Physical Sciences, University of Maryland, College Park, Maryland 20740, USA
⁵Braun Center for Submicron Research, Weizmann Institute, Rehovot 76100, Israel

^*Electronic address: mani@deas.harvard.edu

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Vol. 69, Iss. 19 — 15 May 2004

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