Invariants in the paramagnetic resonance spectra of impurity crystals

A. N. Kamenskii; V. O. Kozlov; N. S. Kuznetsov; I. I. Ryzhov; G. G. Kozlov; M. Bayer; A. Greilich; V. S. Zapasskii

doi:10.1103/PhysRevB.105.014416

Invariants in the paramagnetic resonance spectra of impurity crystals

Mesoscale and Nanoscale Physics 2022-01-26 v1 Optics

Authors: A. N. Kamenskii , V. O. Kozlov , N. S. Kuznetsov , I. I. Ryzhov , G. G. Kozlov , M. Bayer , A. Greilich , V. S. Zapasskii

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Abstract

We show that in cubic crystals with anisotropic impurity centers the sum of squares of the magnetic resonance (EPR) frequencies is invariant with respect to the magnetic field direction. The connection between such an invariant and the g-tensor components of the impurity is derived for different types of centers. The established regularity is confirmed experimentally for the spin-noise spectra of a CaF2-Nd3+ crystal. We show how this property of the EPR spectra can be efficiently used for the assignment of paramagnetic centers in cubic crystals.

Keywords

paramagnetic resonance epr spectra cubic crystals impurity centers g-tensor invariant spin-noise

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@article{arxiv.2106.12637,
  title  = {Invariants in the paramagnetic resonance spectra of impurity crystals},
  author = {A. N. Kamenskii and V. O. Kozlov and N. S. Kuznetsov and I. I. Ryzhov and G. G. Kozlov and M. Bayer and A. Greilich and V. S. Zapasskii},
  journal= {arXiv preprint arXiv:2106.12637},
  year   = {2022}
}

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5 pages, 2 figures

Invariants in the paramagnetic resonance spectra of impurity crystals

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