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Skubic, Björn
Publications (6 of 6) Show all publications
Skubic, B., Holmström, E., Iusan, D., Bengone, O., Eriksson, O., Brucas, R., . . . Nordblad, P. (2006). Competing Exchange Interactions in Magnetic Multilayers. Physical Review Letters, 96, 057205
Open this publication in new window or tab >>Competing Exchange Interactions in Magnetic Multilayers
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2006 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 96, p. 057205-Article in journal (Refereed) Published
Abstract [en]

We have studied alloying of the nonmagnetic spacer layer with a magnetic material as a method of tuning the interlayer coupling in magnetic multilayers. We have specifically studied the Fe/V(100) system by alloying the spacer V with various amounts of Fe. For some Fe concentrations in the spacer, it is possible to create a competition between antiferromagnetic Ruderman-Kittel-Kasuya-Yoshida exchange and direct ferromagnetic exchange coupling. The exchange coupling and transport properties for a large span of systems with different spacer concentrations and thicknesses were calculated and measured experimentally and good agreement between observations and theory was observed. A reduction in magnetoresistance of about 50% was observed close to the switchover from antiferromagnetic to ferromagnetic coupling.

National Category
Physical Sciences Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-96086 (URN)10.1103/PhysRevLett.96.057205 (DOI)
Available from: 2007-09-03 Created: 2007-09-03 Last updated: 2017-12-14Bibliographically approved
Wessely, O., Skubic, B. & Nordström, L. (2006). Current Driven Magnetization Dynamics in Helical Spin Density Waves. Physical Review Letters, 96(25), Article ID 256601.
Open this publication in new window or tab >>Current Driven Magnetization Dynamics in Helical Spin Density Waves
2006 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 96, no 25, article id 256601Article in journal (Refereed) Published
Abstract [en]

A mechanism is proposed for manipulating the magnetic state of a helical spin density wave using a current. It is shown that a current through a bulk metal with a helical spin density wave induces a spin transfer torque, which gives rise to a rotation of the order parameter. The use of spin transfer torque to manipulate the magnetization in bulk systems does not suffer from the obstacles seen for magnetization reversal using interface spin transfer torque in multilayered systems. The effect is demonstrated by a quantitative calculation of the current induced magnetization dynamics of a rare earth metal, Er. Finally, we propose a setup for experimental verification.

Keywords
Spin transfer torque
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:uu:diva-96083 (URN)10.1103/PhysRevLett.96.256601 (DOI)000238697000042 ()16907330 (PubMedID)
Available from: 2007-09-03 Created: 2007-09-03 Last updated: 2017-12-14Bibliographically approved
Skubic, B., Holmström, E., Eriksson, O., Blixt, A. M., Andersson, G., Hjörvarsson, B. & Stanciu, V. (2004). Magnetic moments and exchange interactions in Fe0.82Ni0.18/V bcc(001) multilayers. Physical Review B. Condensed Matter and Materials Physics, 70(9), 094421
Open this publication in new window or tab >>Magnetic moments and exchange interactions in Fe0.82Ni0.18/V bcc(001) multilayers
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2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 70, no 9, p. 094421-Article in journal (Refereed) Published
Abstract [en]

The magnetic ordering and average magnetization of multilayers are greatly affected by the interface structure of the system. In this paper, interface effects are discussed, and their impact on the amplitude and period of the interlayer exchange coupling and the magnetic moments are investigated for the Fe0.82Ni0.18∕V body-centered-cubic (001) system. By modeling these effects by first principles calculations we find good agreement with experiments over the whole investigated range of layer thicknesses. In addition, as different interface effects give different fingerprints on the interlayer exchange coupling and magnetization, we are able to make an estimate of the interface structure of the different experimental samples by comparing experiment to theory.

National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-91263 (URN)10.1103/PhysRevB.70.094421 (DOI)
Available from: 2004-01-19 Created: 2004-01-19 Last updated: 2017-12-14Bibliographically approved
Skubic, B. (2004). Magnetic moments and exchange interactions in magnetic multilayers. (Licentiate dissertation).
Open this publication in new window or tab >>Magnetic moments and exchange interactions in magnetic multilayers
2004 (English)Licentiate thesis, monograph (Other scientific)
Identifiers
urn:nbn:se:uu:diva-86283 (URN)
Available from: 2005-05-12 Created: 2005-05-12
Blixt, A.-M., Andersson, G., Stanciu, V., Skubic, B., Holmström, E., Nordblad, P. & Hjörvarsson, B. (2004). Magnetic phase diagram of Fe0.82Ni0.18/V superlattices. Journal of Magnetism and Magnetic Materials, 280, 346
Open this publication in new window or tab >>Magnetic phase diagram of Fe0.82Ni0.18/V superlattices
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2004 (English)In: Journal of Magnetism and Magnetic Materials, Vol. 280, p. 346-Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-69547 (URN)
Available from: 2007-04-17 Created: 2007-04-17 Last updated: 2011-01-12
Holmström, E., Bergqvist, L., Skubic, B. & Eriksson, O. (2004). Structural and magnetic aspects of multilayer interfaces. Journal of Magnetism and Magnetic Materials, 272-276(Suppl.), E941-E942
Open this publication in new window or tab >>Structural and magnetic aspects of multilayer interfaces
2004 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 272-276, no Suppl., p. E941-E942Article in journal (Refereed) Published
National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-96089 (URN)10.1016/j.jmmm.2003.12.1165 (DOI)
Available from: 2007-09-03 Created: 2007-09-03 Last updated: 2017-12-14Bibliographically approved
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