Universität zu Köln

Shuvaev, A. M., Hemberger, J., Niermann, D., Schrettle, F., Loidl, A., Ivanov, V. Yu., Travkin, V. D., Mukhin, A. A. and Pimenov, A. (2010). Soft-mode behavior of electromagnons in multiferroic manganite. Phys. Rev. B, 82 (17). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Full text not available from this repository.

Abstract

The behavior of the low-frequency electromagnon in multiferroic DyMnO3 has been investigated in external magnetic fields and in a magnetically ordered state. Significant softening of the electromagnon frequency is observed for external magnetic fields parallel to the a axis (B parallel to a), revealing a number of similarities to a classical soft-mode behavior known for ferroelectric phase transitions. The softening of the electromagnon yields an increase in the static dielectric permittivity which follows a similar dependence as predicted by the Lyddane-Sachs-Teller relation. Within the geometry B parallel to b the increase in the electromagnon intensity does not correspond to the softening of the eigenfrequency. In this case the increase in the static dielectric permittivity seems to be governed by the motion of the domain walls.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Shuvaev, A. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hemberger, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Niermann, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schrettle, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Loidl, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ivanov, V. Yu. UNSPECIFIED UNSPECIFIED UNSPECIFIED Travkin, V. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mukhin, A. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pimenov, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-492516
DOI:	10.1103/PhysRevB.82.174417
Journal or Publication Title:	Phys. Rev. B
Volume:	82
Number:	17
Date:	2010
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SPECTROSCOPY Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49251