Large positive quasi-classical magnetoresistance in high mobility 2D electron 
gas: Interplay of short- and long-range disorder

Kvon, Z. D.; Renard, V.; Gusev, G. M.; Portal, J. C.

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Large positive quasi-classical magnetoresistance in high mobility 2D electron gas: Interplay of short- and long-range disorder

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Portal, J. C.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Kvon, Z. D., Renard, V., Gusev, G. M., & Portal, J. C. (2004). Large positive quasi-classical magnetoresistance in high mobility 2D electron gas: Interplay of short- and long-range disorder. Physica E, 22(1-3), 332-335.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FB27-C

Abstract

We observed a giant positive quasi-classical magnetoresistance (MR) of
high mobility 2D electron gas in AlGaAs/GaAs heterostructure. The MR is
non-saturating and increases with the magnetic field as rho(xx)similar
toB(alpha) (alpha = 0.9-1.2). In antidot lattice a non-monotonic
behavior is observed. We show that the MR in both cases is well
described by the recently advanced theory by Polyakov et al. (Phys.
Rev. B 64 (2001) 205306) where non-saturating positive MR and
non-monotonic MR in antidot lattice is predicted as the consequence of
concurrent existence of short- and long-range scattering. (C) 2003
Elsevier B.V. All rights reserved.