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LOW-FIELD MAGNETOTRANSPORT STUDY OF LOCALIZATION IN A MESOSCOPIC ANTIDOT ARRAY

Abstract:

Low-field negative magnetoresistance has been studied on Ga+ ion focused-ion-beam-patterned GaAs/Ga1-xAlxAs heterojunctions as a function of carrier density and temperature. The negative magnetoresistance (NMR) is very large at low densities and decreases with increasing carrier density, giving a magnetoconductance linear in T at low densities but closer to a lnT dependence at higher values. The NMR of this grid structure is well explained using weak localization modified by boundary scatteri...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.47.7354

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Journal:
PHYSICAL REVIEW B
Volume:
47
Issue:
12
Pages:
7354-7360
Publication date:
1993-03-15
DOI:
EISSN:
1095-3795
ISSN:
1098-0121
URN:
uuid:75b656ce-17a8-4e47-a41b-614aa60d8733
Source identifiers:
1668
Local pid:
pubs:1668
Language:
English

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