Hopping magnetoresistance in a single 2D layer in parallel magnetic fields

S. I. Khondaker, M. Pepper, D. A. Ritchie, I. Shlimak

Research output: Contribution to journalArticlepeer-review

Abstract

Large positive magnetoresistance has been observed in parallel magnetic fields in a single 2D layer in a delta-doped GaAs/AlGaAs heterostructure with a variable-range-hopping (VRH) mechanism of conductivity. This implies that spins play an important role in 2D VRH conductivity. A possible explanation involves hopping via double occupied states in the upper Hubbard band, where the intra-state correlation of spins is important.

Original languageEnglish
Pages (from-to)181-183
Number of pages3
JournalPhysica Status Solidi (B): Basic Research
Volume218
Issue number1
DOIs
StatePublished - Mar 2000

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