SURFACE RECONSTRUCTION FORMED BY ORDERED MISSING MOLECULAR ROWS OBSERVED ON THE QUASI-ONE-DIMENSIONAL ORGANIC CONDUCTOR BETA -(BEDT-TTF)2PF6
SURFACE RECONSTRUCTION FORMED BY ORDERED MISSING MOLECULAR ROWS OBSERVED ON THE QUASI-ONE-DIMENSIONAL ORGANIC CONDUCTOR BETA -(BEDT-TTF)2PF6
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准一维有机导体BETA-(BEDT-TTF)2PF6上有序缺失分子行形成的表面重建
DOI：
10.1103/physrevb.55.6773
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发表时间：
1997
影响因子：
3.7
通讯作者：
H. Shigekawa
中科院分区：
文献类型：
--
作者：
M. Ishida;K. Hata;Takehiko Mori;H. Shigekawa
准一维有机导体B-~BEDT-TTF！2 PF 6晶体@BEDTTTF是双-亚乙基二硫代！用扫描隧道显微镜（STM）研究了四硫富瓦烯的结构。在具有PF 6顶层的晶体a-c平面上观察到沿晶轴的双重周期性沿着调制，类似于先前对于具有BEDT-TTF顶层的表面获得的结果。通过对包括第二层BEDT-TTF分子层的高分辨率STM图像的分析，发现表面超结构是由PF 6分子交替缺失的行形成的。据我们所知，这是第一次观察到的有机表面重建涉及这样一个剧烈的变化，在分子排列，这是全面解释使用一个建议的模型的基础上的电荷平衡在表面层。@S0163-1829 ~97！02408-9#
The surface structure of a quasi-one-dimensional organic conductor b-~BEDT-TTF!2PF6 crystal @BEDTTTF is bis~ethylenedithio!-tetrathiafulvalene # was studied by scanning tunneling microscopy ~STM!. Twofold periodic modulation along the crystal axis was observed on the crystal a-c plane with a PF6 top layer, similarly as the previous result obtained for the surface with a BEDT-TTF top layer. With the analysis using high-resolution STM images including the second BEDT-TTF molecular layer, the surface superstructure was found to be formed by alternate missing rows of PF 6 molecules. To our knowledge, this is the first observation of an organic surface reconstruction involving such a drastic change in the molecular arrangement, which was comprehensively explained using a proposed model based on the charge balance in the surface layers. @S0163-1829 ~97!02408-9#