Effects of Alkali Substitution and Pressure on the Charge-Density Wave Transitions of Two-Dimensional Metals K_3Cu_8S_6 and Rb_3Cu_8S_6
スポンサーリンク
概要
- 論文の詳細を見る
K_3Cu_8S_6 is a two-dimensional metal which has two phase transitions at T_1(153 K)and T_2(55 K), accompanied by an incommensurate and a commensurate superstructure, respectively. In order to investigate these phase transitions, the mixed crystals (K_<1-x>Rb_x)_3Cu_8S_6 have been synthesized and the effect of the alkali substitution and that of pressure have been studied by the measurements of their transport properties. With increasing x, T_1 significantly decreases, reaching T_1 of Rb_3Cu_8S_6(=110 K). Pressure also reduces T_1 of K_3Cu_8S_6 and Rb_3Cu_8S_6. On the other hand, the T_2 transition becomes obscure with increasing x, and disappears thoroughly for x≧0. 50. In Rb_3Cu_8S_6, the T_2 transition is absent at ambient pressure but induced by the pressure of at most 0. 5 GPa. Around x=0. 06, a remarkable rise in the resistivity appears be-low T_2. Its mechanism is discussed.
- 社団法人日本物理学会の論文
- 1993-02-15
著者
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Kojima Norimichi
Department Of Chemistry Faculty Of Science Kyoto University
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Kojima Norimichi
Department Of Basic Science Graduate School Of Arts And Science The University Of Tokyo
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SUZUKI Kazuya
Department of Advanced Materials Chemistry, Yokohama National University
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Enoki Toshiaki
Department Of Chemistory Tokyo Inst.of Technology
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Sato Hirohiko
Department Of Chemistry Faculty Of Science Kyoto University
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Sato Hirohiko
Department Of Biotechnology Tokyo University Of Agriculture And Technology
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Suzuki Kazuya
Department Of Chemistry Faculty Of Science Tokyo Institute Of Technology
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Enoki Toshiaki
Department Of Chemistry Faculty Of Science Tokyo Institute Of Technology
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