Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, United States.
Nano Lett. 2013 Apr 10;13(4):1429-34. doi: 10.1021/nl304304e. Epub 2013 Mar 27.
Scanning tunneling microscopy and local conductance mapping show spin-state coexistence in bilayer films of Fe[(H2Bpz2)2bpy] on Au(111) that is independent of temperature between 131 and 300 K. This modification of bulk behavior is attributed in part to the unique packing constraints of the bilayer film that promote deviations from bulk behavior. The local density of states measured for different spin states shows that high-spin molecules have a smaller transport gap than low-spin molecules and are in agreement with density functional theory calculations.
扫描隧道显微镜和局部电导绘图显示，在温度为 131 至 300 K 之间，Fe[(H2Bpz2)2bpy]在 Au(111)上的双层膜中存在自旋态共存现象，这与温度无关。这种对体相行为的修饰部分归因于双层膜的独特堆积限制，这种限制促进了对体相行为的偏离。不同自旋态下测量的局域态密度表明，高自旋分子的输运能隙比低自旋分子小，与密度泛函理论计算结果一致。
