Kreuzer, S and Moser, Jürgen and Wegscheider, Werner and Weiss, Dieter and Bichler, M and Schuh, Dieter (2002) Spin-polarized tunneling through single crystal GaAs(001) barriers. Applied Physics Letters 80, p. 4582.
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We investigate spin-dependent transport through an epitaxial GaAs(001) barrier sandwiched between polycrystalline iron films. Electron transport through the barrier is dominated by quantum mechanical tunneling, demonstrated by a nonlinear IV characteristic, an exponential dependence of the tunneling current on the barrier thickness and the temperature dependence of the current. Though small a clear tunneling magnetoresistance effect proves spin- dependent transport through the FeGaAs interface. The small size of the effect and the high-field magnetoresistance suggest that spinflip scattering plays a decisive role in transport.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||25 May 2009 15:20|
|Last Modified:||09 Dec 2009 05:08|
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