Spectroscopic Study of Narrow-Band Organic Metal (BEDT-ATD)_2PF_6(THF) without Dimerized Structure

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概要

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• The polarized reflection spectrttrn indicates Chart the organic naetal (BBDT-ATD)2PF6(THF)has a qtrasi-one-ditnensiouaal band strtrcture with a narrow barrdwidth of ca. 0.24 eV. The intra-HOIVIO-band transition of (BE,DT-ATD)zPF(5(THF) shows txvo broad peaks at ca. 1000 Cll'l 'and 1700 cm ' which feattnre is qtrite difl'erent froun the Drtrde-like metallic absorption. Thevibronic bands interf'ering with this absorption band begin to groxv as dips at TOO K, which meansthat the screw-axis synatnetry of the space grottp P2)/a is broken lcelow TOOK. This brokensynametry is sttpported by the splitting of tlae Ratnan loand of a charge-sensitive vilorationalzaaode. It is strggested fr'om the conaparison with the ther'rnopower's datat that this structtrralchange has no long-range-ordered rnodulation above 50 K. The intensity of sorne infrared-activevibrational naodes is enhanced by tlae intra-uaaolecular charge oscillation whose optical trarrsitionappe.ars at 4600 cm '

• 社団法人日本物理学会の論文
• 1999-02-15

著者

• YAKUSHI kyuya

  Institute for Molecular Science

• YAMASHITA Yoshiro

  Institute for Molecular Science

• URUICHI Mikio

  Institute for Molecular Science and Graduate University for Advanced Studies

• Yamashita Yoshiro

  Institute Formolecular Science

• Uruichi Mikio

  Institute For Molecular Science

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