Strong-coupled Piezoelectric Polaron

Author

Wayne E. Tefft, Missouri University of Science and Technology

Abstract

A semiclassical, variational calculation for the strong-coupled piezoelectric polaron gives the following results for the ground-state energy and polaron radius, respectively: U0=-0.47(m*/m) (κ²/ε)²eV, and R=3.5(ε/κ²) (m/m*)â ã where m* is the band effective mass, κ is the electromechanical coupling constant, and ε is the strain-free dielectric constant. The theory is expected to be valid when |U0| is larger than thermal energies and R is considerably larger than unit-cell dimensions. A calculation of the polaron effective mass, having a more limited region of validity, gives mp~m*[1+2|U0|/m*vs²], where vs is the velocity of sound. © 1967 The American Physical Society.

Recommended Citation

W. E. Tefft, "Strong-coupled Piezoelectric Polaron," Physical Review, vol. 164, no. 3, pp. 1032 - 1037, American Physical Society, Dec 1967.

The definitive version is available at https://doi.org/10.1103/PhysRev.164.1032

Department(s)

Physics

International Standard Serial Number (ISSN)

0031-899X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 American Physical Society, All rights reserved.

Publication Date

01 Dec 1967