Vibronic structure and g-tensor temperature dependence of K2ZnF4:Cu2+ impurity center

A. Yu. Zaharov; A. E. Nikiforov; S. Yu. Shashkin

doi:10.1117/12.229132

3 January 1996 Vibronic structure and g-tensor temperature dependence of K₂ZnF₄:Cu²⁺ impurity center

A. Yu. Zaharov, A. E. Nikiforov, S. Yu. Shashkin

Proceedings Volume 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions; (1996) https://doi.org/10.1117/12.229132
Event: Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare Earth and Transitional Ions, 1995, St. Petersburg, Russian Federation

Abstract

Adiabatic potential of K₂ZnF₄:Cu²⁺ impurity system is calculated within the frames of pair potential approximation and shell model. The Jahn-Teller multi-body energy contribution is approximated by the lower branch of [CuF₆] cluster adiabatic potential. It is shown that Q_(theta )- and Q_(epsilon )-displacements of the distorted octahedron of F ions surrounding Cu impurity ion may be assumed as the normal vibrational modes. Thus K₂ZnF₄:Cu²⁺ vibronic states energy spectrum calculation reduces to the solution of the (Exe)-problem with the adiabatic potential, which contains not only the main terms (1/2(DOT)K₀(DOT)(rho) ²-V_e(DOT)(rho) ) but also relatively small corrections (-1/2(DOT)(Delta) K(DOT)(rho) ²cos(2(phi) )+F(DOT)(rho) _DOTcos(phi ) treated by perturbation theory. g-tensor components temperature dependences calculated by averaging over vibronic levels are consistent with the experimental data. Simulation of hydrostatic pressure influence on the K₂ZnF₄:Cu²⁺ properties predicts essential changes in g-tensor components values and temperature dependences.

Citation Download Citation

A. Yu. Zaharov, A. E. Nikiforov, and S. Yu. Shashkin "Vibronic structure and g-tensor temperature dependence of K₂ZnF₄:Cu²⁺ impurity center", Proc. SPIE 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions, (3 January 1996); https://doi.org/10.1117/12.229132

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available