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Streltsov, Sergey, V and Khomskii, Daniel, I (2020). Jahn-Teller Effect and Spin-Orbit Coupling: Friends or Foes? Phys. Rev. X, 10 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2160-3308

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Abstract

The Jahn-Teller effect is one of the most fundamental phenomena important not only for physics but also for chemistry and material science. Solving the Jahn-Teller problem and taking into account strong electron correlations we show that quantum entanglement of the spin and orbital degrees of freedom via spin-orbit coupling strongly affects this effect. Depending on the number of d electrons, it may quench (electronic configurations t(2g)(2), t(2g)(4), and t(2g)(5)), partially suppress (t(2g)(1)), or, in contrast, induce (t(2g)(3)) Jahn-Teller distortions. Moreover, in certain situations, interplay between the Jahn-Teller effect and spin-orbit coupling promotes formation of the Mexican hat energy surface facilitating various quantum phenomena.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Streltsov, Sergey, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Khomskii, Daniel, I UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-322767
DOI:	10.1103/PhysRevX.10.031043
Journal or Publication Title:	Phys. Rev. X
Volume:	10
Number:	3
Date:	2020
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2160-3308
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DOUBLE-PEROVSKITE; INSULATOR; STATES Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32276