Universität zu Köln

Das, S., Rata, A. D., Maznichenko, I., V, Agrestini, I. S., Pippel, E., Gauquelin, N., Verbeeck, J., Chen, K., Valvidares, S. M., Vasili, H. Babu, Herrero-Martin, J., Pellegrin, E., Nenkov, K., Herklotz, A., Ernst, A., Mertig, I, Hu, Z. and Doerr, K. (2019). Low-field switching of noncollinear spin texture at La0.7Sr0.3MnO3-SrRuO(3 )interfaces. Phys. Rev. B, 99 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

Interfaces of ferroic oxides can show complex magnetic textures which have strong impact on spintronics devices. This has been demonstrated recently for interfaces with insulating antiferromagnets such as BiFeO3. Here, noncollinear spin textures which can be switched in very low magnetic field are reported for conducting ferromagnetic bilayers of La0.7Sr0.3MnO3-SrRuO3 (LSMO-SRO). The magnetic order and switching are fundamentally different for bilayers coherently grown in reversed stacking sequence. The SRO top layer forms a persistent exchange spring which is antiferromagnetically coupled to LSMO and drives switching in low fields of a few milliteslas. Density functional theory reveals the crucial impact of the interface termination on the strength of Mn-Ru exchange coupling across the interface. The observation of an exchange spring agrees with ultrastrong coupling for the MnO2/SrO termination. Our results demonstrate low-field switching of noncollinear spin textures at an interface between conducting oxides, opening a pathway for manipulating and utilizing electron transport phenomena in controlled spin textures at oxide interfaces.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Das, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rata, A. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maznichenko, I., V UNSPECIFIED UNSPECIFIED UNSPECIFIED Agrestini, I. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pippel, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gauquelin, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Verbeeck, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Valvidares, S. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vasili, H. Babu UNSPECIFIED UNSPECIFIED UNSPECIFIED Herrero-Martin, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pellegrin, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nenkov, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Herklotz, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ernst, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mertig, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Hu, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Doerr, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-159208
DOI:	10.1103/PhysRevB.99.024416
Journal or Publication Title:	Phys. Rev. B
Volume:	99
Number:	2
Date:	2019
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 SRRUO3; TRANSITION; ANISOTROPY Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15920