Wurstbauer, Ursula and Knott, S. and Zolotaryov, A. and Schuh, Dieter and Hansen, W. and Wegscheider, Werner (2010) Strong localization effect in magnetic two-dimensional hole systems. Applied Physics Letters 96, p. 22103.
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We report an extensive study of the magnetotransport properties of magnetically doped two-dimensional hole systems. Inverted manganese modulation doped InAs quantum wells with localized manganese ions providing a magnetic moment of S = 5/2 were grown by molecular beam epitaxy. Strong localization effect found in low-field magnetotransport measurements on these structures can either be modified by the manganese doping density or by tuning the two-dimensional hole density p via field effect. The data reveal that the ratio between p and manganese ions inside or in close vicinity to the channel enlarges the strong localization effect. Moreover, asymmetric broadening of the doping layer due to manganese segregation is significantly influenced by strain in the heterostructure.
|Date:||12 January 2010|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Projects:||SFB 689: Spinphänomene in reduzierten Dimensionen|
|Keywords:||galvanomagnetic effects, III-V semiconductors, indium compounds, magnetic moments, manganese, molecular beam epitaxial growth, semiconductor doping, semiconductor quantum wells|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Partially|
|Deposited On:||19 Mar 2010 07:57|
|Last Modified:||19 Mar 2010 07:57|