Monte Carlo simulation of sinusoidally modulated superlattice growth

H. Jeong, B. Kahng, Sang Hoon Lee, C. Y. Kwak, A. L. Barabási, J. K. Furdyna

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The fabrication of ZnSe/ZnTe superlattices grown by the process of rotating the substrate in the presence of an inhomogeneous flux distribution instead of the successively closing and opening of source shutters is studied via Monte Carlo simulations. It is found that the concentration of each compound is sinusoidally modulated along the growth direction, caused by the uneven arrival of Se and Te atoms at a given point of the sample, and by the variation of the Te/Se ratio at that point due to the rotation of the substrate. In this way we obtain a ZnSe 1-xTe x alloy in which the composition x varies sinusoidally along the growth direction. The period of the modulation is directly controlled by the rate of the substrate rotation. The amplitude of the compositional modulation is monotonic for small angular velocities of the substrate rotation, but is itself modulated for large angular velocities. The average amplitude of the modulation pattern decreases as the angular velocity of substrate rotation increases and the measurement position approaches the center of rotation. The simulation results are in good agreement with previously published experimental measurements on superlattices fabricated in this manner.

Original languageEnglish
Article number031602
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume65
Issue number3
DOIs
Publication statusPublished - 2002 Mar 1

Fingerprint

Superlattices
Monte Carlo Simulation
Substrate
Angular velocity
angular velocity
Modulation
simulation
modulation
superlattices
Point of symmetry
Monotonic
shutters
closing
Fabrication
Rotating
arrivals
Vary
Decrease
fabrication
Simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Mathematical Physics

Cite this

Monte Carlo simulation of sinusoidally modulated superlattice growth. / Jeong, H.; Kahng, B.; Lee, Sang Hoon; Kwak, C. Y.; Barabási, A. L.; Furdyna, J. K.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 65, No. 3, 031602, 01.03.2002.

Research output: Contribution to journalArticle

Jeong, H. ; Kahng, B. ; Lee, Sang Hoon ; Kwak, C. Y. ; Barabási, A. L. ; Furdyna, J. K. / Monte Carlo simulation of sinusoidally modulated superlattice growth. In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 2002 ; Vol. 65, No. 3.
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