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Electronic topological transition and noncollinear magnetism in compressed hcp Co
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 92, no 13, 134422Article in journal (Refereed) Published
Abstract [en]

Recent experiments showed that Co undergoes a phase transition from the ferromagnetic hcp phase to the nonmagnetic fcc one around 100 GPa. Since the transition is of first order, a certain region of coexistence of the two phases is present. By means of ab initio calculations, we found that the hcp phase itself undergoes a series of electronic topological transitions (ETTs), which affects both elastic and magnetic properties of the material. Most importantly, we propose that the sequence of ETTs lead to the stabilization of a noncollinear spin arrangement in highly compressed hcp Co. Details of this noncollinear magnetic state and the interatomic exchange parameters that are connected to it are presented here.

Place, publisher, year, edition, pages
2015. Vol. 92, no 13, 134422
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-267665DOI: 10.1103/PhysRevB.92.134422ISI: 000363789900003OAI: oai:DiVA.org:uu-267665DiVA: diva2:873918
Funder
Knut and Alice Wallenberg FoundationSwedish Research CouncileSSENCE - An eScience Collaboration
Note

Enligt WoS heter författaren W, Sun, troligen är det Sun Weiwei som det syftas på.

Available from: 2015-11-25 Created: 2015-11-25 Last updated: 2017-12-01Bibliographically approved

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Kvashnin, Yaroslav O.Weiwei, SunDi Marco, IgorEriksson, Olle

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