Quantum size effects manifest in infrared spectra of single bismuth nanowires

被引:43
作者
Cornelius, TW
Toimil-Molares, ME
Neumann, R
Fahsold, G
Lovrincic, R
Pucci, A
Karim, S
机构
[1] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany
[2] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany
[3] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany
关键词
D O I
10.1063/1.2183823
中图分类号
O59 [应用物理学];
学科分类号
摘要
Infrared transmission spectroscopy measurements on single bismuth nanowires of various diameters d are presented. The spectra show a strong absorption whose onset is blueshifted proportionally to 1/d(2). We ascribe the absorption to interband transitions. The blueshift results from quantum size effects since they lead to the d-dependent splitting of the energy bands and to a respective shift of energy gaps.
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页数:3
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