Universität zu Köln

Thielemann-Kuehn, Nele, Schick, Daniel, Pontius, Niko, Trabant, Christoph, Mitzner, Rolf, Holldack, Karsten, Zabel, Hartmut, Foehlisch, Alexander and Schuessler-Langeheine, Christian (2017). Ultrafast and Energy-Efficient Quenching of Spin Order: Antiferromagnetism Beats Ferromagnetism. Phys. Rev. Lett., 119 (19). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

By comparing femtosecond laser pulse induced ferro- and antiferromagnetic dynamics in one and the same material-metallic dysprosium-we show both to behave fundamentally different. Antiferromagnetic order is considerably faster and much more efficiently reduced by optical excitation than its ferromagnetic counterpart. We assign the fast and extremely efficient process in the antiferromagnet to an interatomic transfer of angular momentum within the spin system. Our findings imply that this angular momentum transfer channel is effective in other magnetic metals with nonparallel spin alignment. They also point out a possible route towards energy-efficient spin manipulation for magnetic devices.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Thielemann-Kuehn, Nele UNSPECIFIED UNSPECIFIED UNSPECIFIED Schick, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Pontius, Niko UNSPECIFIED UNSPECIFIED UNSPECIFIED Trabant, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Mitzner, Rolf UNSPECIFIED UNSPECIFIED UNSPECIFIED Holldack, Karsten UNSPECIFIED UNSPECIFIED UNSPECIFIED Zabel, Hartmut UNSPECIFIED UNSPECIFIED UNSPECIFIED Foehlisch, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuessler-Langeheine, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-211507
DOI:	10.1103/PhysRevLett.119.197202
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	119
Number:	19
Date:	2017
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELECTRONIC-STRUCTURE; ANGULAR-MOMENTUM; DEMAGNETIZATION; DYSPROSIUM; MAGNETOOPTICS; MAGNETISM; GD Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21150