DocumentCode :
1999916
Title :
Electron states in a semiconductor quantum ring in parallel magnetic field
Author :
Bhattacharyya, S. ; Deyasi, Arpan ; Sen, Susmita ; Das, N.R.
Author_Institution :
Dept. of Comput. Sci. & Eng., Asansol Eng. Coll., Asansol, India
fYear :
2012
fDate :
15-17 March 2012
Firstpage :
581
Lastpage :
584
Abstract :
Lowest eigenenergy states of electrons in a semiconductor quantum ring with cylindrical geometry have been evaluated in the presence of external magnetic field, applied parallel to the plane of the quantum ring. Kinetic energy is modified by the appearance of a vector potential due to the magnetic field thus controlling the electron energy-eigenvalues inside the ring. Time-independent Schrödinger equation is solved with appropriate boundary conditions, and first and second-order Bessel functions are considered for computation of energy subbands. Non-monotonic spacing of quantized electron energy states have been observed by changing different dimensions as well as changing magnetic field considering n-GaAs material. Tailoring of dimension and magnetic field helps to obtain absorption and emission spectra, making it suitable for photonic applications.
Keywords :
Bessel functions; III-V semiconductors; Schrodinger equation; absorption; eigenvalues and eigenfunctions; emission; integrated optics; magnetic fields; semiconductor quantum dots; absorption spectra; cylindrical geometry; eigenenergy state; electron energy-eigenvalue; electron states; emission spectra; external magnetic field; first-order Bessel function; kinetic energy; nonmonotonic spacing; parallel magnetic field; photonic application; quantized electron energy state; second-order Bessel function; semiconductor quantum ring; time-independent Schrödinger equation; Magnetic resonance; Cylindrical Geometry; Parallel Magnetic Field; Quantum Ring; Semiconductor Nanostructures;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Recent Advances in Information Technology (RAIT), 2012 1st International Conference on
Conference_Location :
Dhanbad
Print_ISBN :
978-1-4577-0694-3
Type :
conf
DOI :
10.1109/RAIT.2012.6194593
Filename :
6194593
Link To Document :
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