Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The Aharonov-Bohm effect in a mesoscopic ring of diluted magnetic alloy
AU - Falko, Vladimir
PY - 1992/4/13
Y1 - 1992/4/13
N2 - The spin dynamics of magnetic impurities is shown to play a crucial role in mesoscopic effects. It follows from this analysis that the quantum magnetoconductance oscillations in a mesoscopic ring of a diluted magnetic alloy are gradually suppressed in the paramagnetic regime, whereas a strong magnetic field forbids spin-flip processes and restores the mesoscopic Aharonov-Bohm oscillations with an amplitude limited by the efficiency of electron escape to the bulk. This effect is examined analytically using a model of a quasi one-dimensional ring joined to the electrodes by tunnelling contacts or short leads.
AB - The spin dynamics of magnetic impurities is shown to play a crucial role in mesoscopic effects. It follows from this analysis that the quantum magnetoconductance oscillations in a mesoscopic ring of a diluted magnetic alloy are gradually suppressed in the paramagnetic regime, whereas a strong magnetic field forbids spin-flip processes and restores the mesoscopic Aharonov-Bohm oscillations with an amplitude limited by the efficiency of electron escape to the bulk. This effect is examined analytically using a model of a quasi one-dimensional ring joined to the electrodes by tunnelling contacts or short leads.
U2 - 10.1088/0953-8984/4/15/009
DO - 10.1088/0953-8984/4/15/009
M3 - Journal article
VL - 4
SP - 3943
EP - 3954
JO - Journal of Physics: Condensed Matter
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
IS - 15
ER -