부산대학교 도서관

The electron spin resonance in [Ge.sub.0.99]Cr.sub.0.01 nanowires grown in nanopores of anodized aluminum oxide is investigated. At temperatures in the range 4--300 K, the electron spin resonance spectra of the nanowires exhibit an asymmetric isotropic resonance line corresponding to the paramagnetic resonance of charge carriers. At temperatures below 50--70 K, in the electron spin resonance spectra of the [Ge.sub.0.99]Cr.sub.0.01 nanowires, there appear a large number of additional resonance lines associated with the antiferromagnetic resonance in GeCr clusters. It is revealed that the effective g factor of the asymmetric Dyson line attributed to the charge carriers in germanium decreases regularly with an enhancement of the spin-orbit interaction in the series of Mn.sup.2+, Cr.sup.2+, Fe.sup.3+, and Co.sup.2+ transition metal ions used to dope germanium nanowires.