Universität zu Köln

Zhang, S. L., Stasinopoulos, I., Lancaster, T., Xiao, F., Bauer, A., Rucker, F., Baker, A. A., Figueroa, A. I., Salman, Z., Pratt, F. L., Blundell, S. J., Prokscha, T., Suter, A., Waizner, J., Garst, M., Grundler, D., van der Laan, G., Pfleiderer, C. and Hesjedal, T. (2017). Room-temperature helimagnetism in FeGe thin films. Sci Rep, 7. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

Full text not available from this repository.

Abstract

Chiral magnets are promising materials for the realisation of high-density and low-power spintronic memory devices. For these future applications, a key requirement is the synthesis of appropriate materials in the form of thin films ordering well above room temperature. Driven by the DzyaloshinskiiMoriya interaction, the cubic compound FeGe exhibits helimagnetism with a relatively high transition temperature of 278 K in bulk crystals. We demonstrate that this temperature can be enhanced significantly in thin films. Using x-ray scattering and ferromagnetic resonance techniques, we provide unambiguous experimental evidence for long-wavelength helimagnetic order at room temperature and magnetic properties similar to the bulk material. We obtain alpha(intr) = 0.0036 +/- 0.0003 at 310 K for the intrinsic damping parameter. We probe the dynamics of the system by means of muon-spin rotation, indicating that the ground state is reached via a freezing out of slow dynamics. Our work paves the way towards the fabrication of thin films of chiral magnets that host certain spin whirls, so-called skyrmions, at room temperature and potentially offer integrability into modern electronics.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zhang, S. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stasinopoulos, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lancaster, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Xiao, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bauer, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rucker, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Baker, A. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Figueroa, A. I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Salman, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pratt, F. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Blundell, S. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Prokscha, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Suter, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Waizner, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Garst, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Grundler, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED van der Laan, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pfleiderer, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hesjedal, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-236722
DOI:	10.1038/s41598-017-00201-z
Journal or Publication Title:	Sci Rep
Volume:	7
Date:	2017
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language REAL-SPACE OBSERVATION; SKYRMION LATTICE; MAGNETIC SKYRMIONS; MNSI; DYNAMICS Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23672