Universität zu Köln

Rossi, L., Bruening, D., Ueda, H., Skourski, Y., Lorenz, T. and Bryant, B. (2020). Magnetoelectric coupling in a frustrated spinel studied using high-field scanning probe microscopy. Appl. Phys. Lett., 116 (26). MELVILLE: AMER INST PHYSICS. ISSN 1077-3118

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Abstract

Below its Neel temperature, the frustrated magnet CdCr2O4 exhibits an antiferromagnetic spin-spiral ground state. Such states can give rise to a sizable magnetoelectric coupling. In this report, we measure the electric polarization induced in single-crystalline CdCr2O4 by large applied magnetic field. Because the detection of a macroscopic polarization is hindered by the structural domains in the tetragonal spin-spiral phase, we have pioneered an alternative method of measuring polarization induced by high magnetic fields, using electrostatic force microscopy. This method enables us to measure polarization from nanoscale areas of the sample surface, as well as imaging how charge inhomogeneities change with magnetic field.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rossi, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bruening, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ueda, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Skourski, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lorenz, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bryant, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-328910
DOI:	10.1063/5.0003488
Journal or Publication Title:	Appl. Phys. Lett.
Volume:	116
Number:	26
Date:	2020
Publisher:	AMER INST PHYSICS
Place of Publication:	MELVILLE
ISSN:	1077-3118
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MULTIFERROICS Multiple languages Physics, Applied Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32891