A Single Molecule Kondo Switch: Multistability of Tetracyanoethylene on Cu(111)

被引:72
作者
Choi, Taeyoung [1 ]
Bedwani, Stephane [2 ,3 ]
Rochefort, Alain [2 ,3 ]
Chen, Chia-Yi [1 ]
Epstein, Arthur J. [1 ]
Gupta, Jay A. [1 ]
机构
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[2] Ecole Polytech, Dept Genie Phys, Montreal, PQ H3C 3A7, Canada
[3] Ecole Polytech, RQMP, Montreal, PQ H3C 3A7, Canada
基金
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词
Scanning tunneling microscopy; scanning tunneling spectroscopy; organic magnets; charge transfer; Rondo resonance; tetracyanoethylene; VIBRATIONAL SPECTROSCOPY; CHARGE-TRANSFER; TEMPERATURE; MICROSCOPY; RESONANCE; JUNCTIONS; SPECTRA; METALS; STATES;
D O I
10.1021/nl1024563
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Single tetracyanoethyelene (TCNE) molecules on Cu(111) are reversibly switched among five states by applying voltage pulses with the up of a scanning tunneling microscope A pronounced Rondo resonance in tunneling spectroscopy indicates that one of the states is magnetic Side bands of the Rondo resonance appear at energies which correspond to inter- and intramolecular vibrational modes Density functional theory suggests that molecular deformation changes the occupancy in TCNE's molecular orbitals, thus producing the magnetic state
引用
收藏
页码:4175 / 4180
页数:6
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