Electron Spin Resonance Spectra of K<sub>x</sub>C<sub>60</sub> Films Prepared by Electrochemical Doping
Hisashi ArakiDepartment of Electronics, Faculty of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565Nobuo YamasakiDepartment of Electronics, Faculty of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565Tsuyoshi KawaiDepartment of Electronics, Faculty of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565Anvar ZakhidovDepartment of Thermo-physics, Uzbek SSR Academy of Science, Katartal 28 Chilanzar, C. Tashkent, 700135 UzbekistanKatsumi YoshinoDepartment of Thermo-physics, Uzbek SSR Academy of Science, Katartal 28 Chilanzar, C. Tashkent, 700135 Uzbekistan
ABI
Аннотация
We have found that K-doped C 60 films can be prepared by the electrochemical doping technique using a solid electrolyte. From these films, we obtained four electron spin resonance (ESR) peaks at a temperature below 50 K. The intensity of one peak in the high field region was extremely sensitive to slight changes in temperature below 10 K and in microwave power. Spin-lattice relaxation time gives a major effect on the power dependence of the increasing rate of the intensity. The ESR center giving this anomalous peak is tentatively interpreted to be related to the superconducting state.
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