Polaron effects in cylindrical GaAs/AlxGa1-xAs core-shell nanowires

doi:10.1088/1674-1056/26/9/097302

Abstract By the fractal dimension method, the polaron properties in cylindrical GaAs/Al_xGa_1-xAs core-shell nanowire are explored. In this study, the polaron effects in GaAs/Al_xGa_1-xAs core-shell nanowire at different values of shell width and aluminum concentration are discussed. The polaron binding energy, polaron mass shift and fractal dimension parameter are numerically worked out each as a function of core radius. The calculation results show that the binding energy and mass shift of the polaron first increase and then decrease as the core radius increases, forming their corresponding maximum values for different aluminum concentrations at a given shell width. Polaron problems in the cylindrical GaAs/Al_xGa_1-xAs core-shell nanowire are solved simply by using the fractal dimension method to avoid complex and lengthy calculations.

Keywords: core-shell nanowire core radius polaron effects fractal dimension

Received: 03 February 2017
Revised: 01 June 2017
Accepted manuscript online:

PACS:	73.63.-b	(Electronic transport in nanoscale materials and structures)
	73.90.+f	(Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)
	73.63.Nm	(Quantum wires)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10574011 and 10974017).

Corresponding Authors: Qiang Tian
E-mail: qiangtian163@163.com

Cite this article:

Hui Sun(孙慧), Bing-Can Liu(刘炳灿), Qiang Tian(田强) Polaron effects in cylindrical GaAs/Al_xGa_1-xAs core-shell nanowires 2017 Chin. Phys. B 26 097302

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Polaron effects in cylindrical GaAs/Al_xGa_1-xAs core-shell nanowires