超伝導臨界温度と擬ポテンシャル半径の関係 : 元素物質,AB型化合物,鉄系および銅系化合物
スポンサーリンク
概要
- 論文の詳細を見る
The relation between the superconducting critical temperature, Tc, and the effective pseudopotential radius, r(eff), was examined for elements, AB-type compounds, and Fe- and Cu-based compounds. Here, assuming arbitrarily their bonding states hybridized with valence electrons, we estimated r(eff) for the materials from the pseudopotential radii given for s, p, and d electrons. It is suggested that Tc can be estimated from the linear relation between Tc and N(v)r(eff)3, where N(v) is the effective number of valence electrons. For the elements with relatively high Tc such as Nb, Tc, and V, for those in AB compounds, and for Cu and Fe in their cuprates, pnictides, and chalcogenides, the value of Tc was found to vary almost linearly to N(v)r(eff)3 by assuming the p3dn or sp2dn hybridization. These findings suggest that the p3dn or sp2dn hybridization is a key bonding character to realize high Tc. For some of the compounds containing transition elements, however, the data deviate largely from the linear relation, indicating that the validity of the present argument is limited in such a category.
- 一般社団法人 粉体粉末冶金協会の論文
著者
関連論文
- 層状化合物LaCoAsOおよび周辺物質の磁気的研究
- Ni_3AlC_xの合成と磁性 : アーク溶解法と固相反応法の比較
- 21pPSA-67 鉄梯子酸化物Sr_3Fe_2O_5(21pPSA 領域3ポスターセッション,領域3(磁性,磁気共鳴))
- 軌道縮退を有する重い電子系のGrand Kadowaki-Woods則(最近の研究から)
- 20aYG-1 軌道縮退を有する重い電子系のGrand Kadowaki-Woods則(重い電子系超伝導他,領域8(強相関系 : 高温超伝導,強相関f電子系など))
- 25pWK-12 一次元平面四配位鉄酸化物(25pWK 化合物・酸化物磁性,領域3(磁性,磁気共鳴))
- 層状化合物Fe3GeTe2の合成と磁性
- 層状化合物Fe_3GeTe_2の合成と磁性
- 新しい電子物性を創成する遷移金属 (希土類) 化合物
- [口頭16]Na_xCoO_2・yH_2Oの異方的超伝導 : ^Co NQRおよび^Na, ^2D NMR(コバルト酸化物(I),異方的超伝導現象の統一的理解を目指して,京都大学基礎物理学研究所 研究会,研究会報告)