Zero current anomaly in non-linear transport of high-mobility InGaAs/InP 2DEG structures in quantizing magnetic fields

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DOIResolve DOI: http://doi.org/10.1063/1.3666524
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TypeArticle
Proceedings titlePHYSICS OF SEMICONDUCTORS: 30th International Conference on the Physics of Semiconductors
Series titleAIP Conference Proceedings; no. 1399
Conference30th International Conference on the Physics of Semiconductors, ICPS-30, 25 July 2010 through 30 July 2010, Seoul
ISSN0094-243X
1551-7616
ISBN9780735410022
Pages607608; # of pages: 2
AbstractWe report on the observation and study of quantum transport diamonds and Zero Current Anomaly (ZCA) in the non-linear differential resistance r xx=dV xx/dI of high-mobility In xGa 1-xAs/InP structures in quantizing magnetic fields. The diamond-shaped features are observed in the grey-scale plots of r xx as a function of magnetic field and dc current. Spin diamonds are revealed at higher magnetic fields when spin levels at odd filling factors are well resolved. Unexpectedly, a narrow dip is observed in differential resistance vs. current at I dc=0 in quantizing magnetic fields, which we refer to as the ZCA effect. © 2011 American Institute of Physics.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences
Peer reviewedYes
NPARC number21271423
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Record identifier4e7c532e-bb4e-463e-b81e-a78645ddc5e5
Record created2014-03-24
Record modified2016-05-09
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