Observation of Three-Dimensional Fermi Surfaces in a Single-Component Molecular Metal, [Ni(tmdt)2]

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• 作者：Hisashi Tanaka ; Madoka Tokumoto ; Shoji Ishibashi ; David Graf ; Eun Sang Choi ; James S. Brooks ; Syuma Yasuzuka ; ^$ ; Yoshinori Okano ; Hayao Kobayashi ; and Akiko Kobayashi
• 刊名：Journal of the American Chemical Society
• 出版年：2004
• 出版时间：September 1, 2004
• 年：2004
• 卷：126
• 期：34
• 页码：10518 - 10519
• 全文大小：107K
• 年卷期：v.126,no.34(September 1, 2004)
• ISSN：1520-5126

文摘

Rigorous evidence of metallicity of a molecular crystal consisting of single-component neutral molecules is disclosed by observing the Fermi surface through magnetic quantum oscillations. Torque magnetometry measurements of de Haas-van Alphen oscillatory signals in a single crystal of [Ni(tmdt)₂] molecules (tmdt = trimethylenetetrathiafulvalenedithiolate) were performed by using a sensitive microcantilever at low temperatures in high magnetic fields to 45 T. The observed signals for all directions of magnetic field revealed unambiguously the presence of three-dimensional Fermi surfaces for both holes and electrons. The results are consistent with electronic band structure calculations for [Ni(tmdt)₂].