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Non-monotonic Magnetoresistivity in Two-dimensional Electron Systems
- Authors
- Yi-Ting Wang[Yi-Ting Wang]; Tak-Pong Woo[Tak-Pong Woo]; Shun-Tsung Lo[Shun-Tsung Lo]; 김길호[김길호]; Chi-Te Liang[Chi-Te Liang]
- Issue Date
- 2014
- Publisher
- 한국물리학회
- Keywords
- Magnetoresistivity; Interactions; Ballistic
- Citation
- Journal of the Korean Physical Society, v.65, no.10, pp.1503 - 1507
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Journal of the Korean Physical Society
- Volume
- 65
- Number
- 10
- Start Page
- 1503
- End Page
- 1507
- ISSN
- 0374-4884
- Abstract
- The connection being studied is the one between the non-monotonic magnetoresistivity (MR) andthe electron-electron interaction (EEI) correction in weakly-disordered two-dimensional electronsystems (2DESs) in the ballistic region kBT /~ > 1, where kB, T, , and ~ are the Boltzmannconstant, the temperature, the scattering time, and the reduced Planck constant, respectively. Atzero magnetic field, a transition of the resistivity (T) from the insulating region d /dT < 0 tothe metallic region d /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-monotonicMR effect and in the temperature dependence of the resistivity.
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