Non-monotonic magnetoresistivity in two-dimensional electron systems

Yi Ting Wang, Tak Pong Woo*, Shun-Tsung Lo, Gil Ho Kim, Chi Te Liang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The connection being studied is the one between the non-monotonic magnetoresistivity (MR) and the electron-electron interaction (EEI) correction in weakly-disordered two-dimensional electron systems (2DESs) in the ballistic region kBTτ/ħ > 1, where kB, T, τ, and ħ are the Boltzmann constant, the temperature, the scattering time, and the reduced Planck constant, respectively. At zero magnetic field, a transition of the resistivity ρ(T) from the insulating region dρ/dT < 0 to the metallic region dρ/dT > 0 is observed. The MR shows a maximum, and with increasing T, the position of the MR maximum in B increases for both GaAs-based (sample A) and GaN-based (sample B) 2DESs. Our data suggest that the EEI plays an important role in such a non-monotonic MR effect and in the temperature dependence of the resistivity.

Original languageEnglish
Pages (from-to)1503-1507
Number of pages5
JournalJournal of the Korean Physical Society
Issue number10
StatePublished - 6 Dec 2014


  • Ballistic
  • Interactions
  • Magnetoresistivity

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