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1999 | 96 | 5 | 641-650
Article title

Transport in Quantum Structures of Diluted Magnetic Semiconductors

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EN
Abstracts
EN
This paper reviews recent millikelvin studies of magnetoconductance and noise in nanostructures of a diluted magnetic semiconductor n-Cd_{1-x}Mn_{x}Te. These studies were particularly rewarding for probing the influence of magnetic ions upon mesoscopic phenomena. The accumulated results demonstrated the existence of a new driving mechanism of the universal conductance fluctuations in magnetic systems. Several signatures of spin-glass freezing were observed, such as the appearance of 1/f conductance noise, aging, thermal, and magnetic irreversibilities as well as a strong increase in the amplitude of both conductance fluctuations and noise when temperature and the magnetic field were lowered below the freezing line. A statistical analysis of conductance noise made it possible to investigate the nature of excitations in spin-glass phase, and to discriminate between competing theoretical models.
Keywords
Year
Volume
96
Issue
5
Pages
641-650
Physical description
Dates
published
1999-11
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv96z511kz
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