Tayloring energy levels with curvature ? An illustration of Da Costa formalism

Eurotherm Seminar No 108 - Nanoscale and Microscale Heat Transfer V

Fumeron, Sébastien^1 ; Berche, Bertrand^1 ; Moraes, Fernando^2 ; Santos, Fernando^2

IJL, UMR Université de Lorraine, CNRS 7198, BP 70239, Vandœuvre les Nancy

54506, France^1

Universidade Federal de Pernambuco, Recife, PE

50670-901, Brazil^2

关键词: Ballistic transports;    Curved surfaces;    Dinger equation;    Effective potentials;    Electronic device;    Geometric effects;    Local curvature;    Open boundary condition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/785/1/012003/pdf
DOI  :  10.1088/1742-6596/785/1/012003

来源: IOP

【 摘 要 】

Nanotubes are generally not perfectly straight cylinders and the local curvature can influence transport properties. As shown by da Costa [1], charged particles moving on a curved surface experience an effective potential which modifies their dynamics. In this paper, we solve a one-electron Schrödinger equation in a distorted nanotube with open boundary conditions. We find that the deformations may open bandgaps suggesting their use in the design of nanotube- based electronic devices.