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高T_cYBa₂Cu₃O_x中Cu离子价态的H₂⁺束流光谱研究

INVESTIGATION ON THE VALENCE STATE OF COPPER IN YBa₂Cu₃Ox BY H₂⁺ BEAM SPECTRA

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【作者】宋增福；谢大弢；潘广炎；雷子明；刘家瑞；杨丰；张丽珠；刘文天；丁晓春；徐端夫；吴瑾光；徐光宪；

【Author】 SONG ZENGFU, XIE DATAO, PAN GUANGYAN, LEI ZIMING, LIU JIARUI, YANG FENG, ZHANG LIZHU(Department of Physics, Peking University, Beijing, China) LIU WENTIAN, DIN XIAOCHUN, XU DUANFU, WU JINGUANG XU GUANGXIAN(Department of Chamistry, Peking University, Beijing, China)

【机构】北京大学物理系；北京大学化学系；北京大学化学系北京；北京；北京；

【摘要】对高T_c YBa₂Cu₃O_x及名义组成为YBa₂Ag₃O_x和YBa₂Cu_1.5Ag_1.5O_x体系进行了H₂⁺束流光谱的比较研究,证实YBa₂Cu₃O_x的束流光谱主要是Cu离子的贡献。通过对谱带的指认,讨论了Cu离子可能存在的价态。更多还原

【Abstract】 The H₂⁺ beam spectra of high T_c YBa₂Cu₃O_x （YBCO） and the nominal compounds of YBa₂Ag₃O_x, YBa₂Cu_1.5Ag_1.5O_x are measured at room temperature and liquid nitrogen temperature, respectively. Comparison of H₂⁺ beam spectrum of YBCO with those of YBa₂Ag₃O_x and YBa₂Cu_1.5Ag_1.5O_x indicates that the emission bands of YBCO can be attributed to the transition between the energy levels of the copper ions. On the basis of spectra assignment the valence State of copper in YBCO is disscussed.更多还原