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Model of the Semiconductor-to-Semimetal Transition Modulation at Teraherz Frequencies

Published online by Cambridge University Press:  01 January 1992

T. K. Cheng ,
L. Acioli ,
J. Vidal ,
H. J. Zeiger ,
E. P. Ippen ,
G. Dresselhaus  and
M. S. Dresselhaus
T. K. Cheng
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
L. Acioli
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
J. Vidal
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
H. J. Zeiger
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
E. P. Ippen
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
G. Dresselhaus
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
M. S. Dresselhaus
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139
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Abstract

We present experimental data which show that large amplitude coherent lattice vibrations can be impulsively excited using short optical pulses of light. Furthermore, using a quasi-equilibrium model, we show how the these coherent lattice vibrations suggest a ~ 7 THz modulation of the semiconductor-to-metal transition in Ti2O3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 291: Symposium O – Materials Theory and Modeling , 1992 , 619
Copyright
Copyright © Materials Research Society 1993

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References

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