Effect of potential shape on the binding energy of the impurity states in nanotube

Autor:	Jose Barba Ortega, Jesús D. González Acosta, Eduardo Alberto Orozco Ospino
Rok vydání:	2008
Předmět:	Physics Nanotube Condensed matter physics Binding energy General Engineering Density of states Wave function Ground state Fractal dimension Symmetry (physics) Magnetic field
Zdroj:	Microelectronics Journal. 39:1286-1288
ISSN:	0026-2692
DOI:	10.1016/j.mejo.2008.01.018
Popis:	We analyze the effect of the additional repulsive core on the ground state energy of the off-axis neutral donor in GaAs/Ga"1"-"xAl"xAs cylindrical nanotube in the presence of the uniform magnetic field applied along the symmetry axis by using the recently developed fractal dimension method. Curves of the D^0 ground state binding energies as a function of the donor distance from the axis and density states with randomly distributed donors show that the additional peaks in the curves of the density of impurity states appear due to the presence of the additional repulsive core in the middle's well. To take into account the mixing of the low lying subbands we express the wave function as a product of the combination of 1s and 2p"x","y wave functions with an unknown envelope function that depends only on electron-ion separation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::934b159ee5f8e62abab3efc39ac396ff https://doi.org/10.1016/j.mejo.2008.01.018 Zobrazit plný text záznamu Full Text from ScienceDirect