This article is cited in 3 papers

CONDENSED MATTER

Induced Jahn-Teller transition in DyPO$_4$ caused by a change in ground state upon level crossing

Z. A. Kazei, V. V. Snegirev

M. V. Lomonosov Moscow State University

Abstract: The transition caused by a change in the ground state of a rare-earth ion upon level crossing, an analogue of the induced Jahn-Teller transition in rare-earth compounds, is observed. It is shown that a jumpwise change in the Jahn-Teller interactions of $\alpha$ and $\gamma$ symmetries, caused by a change in the corresponding quadrupole moments in DyPO$_4$ upon level crossing, diminishes the critical field by $\sim20$ kOe and leads to a sharper change in magnetization $M$ and differential magnetic susceptibility $dM/dH$ near the crossover point.

PACS: 71.70.-d, 75.30.-m

Received: 10.10.2000
Revised: 13.12.2000

 English version: Journal of Experimental and Theoretical Physics Letters, 2001, 73:2, 90–93

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