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Magnetic two-dimens...
Magnetic two-dimensional electron liquid at the surface of Heusler semiconductors
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- Keshavarz, Samara (author)
- Uppsala universitet,Materialteori
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- Di Marco, Igor (author)
- Uppsala universitet,Materialteori,UpAsia Pacific Ctr Theoret Phys, Pohang 790784, Gyeongbuk, South Korea;POSTECH, Dept Phys, Pohang 790784, Gyeongbuk, South Korea
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- Thonig, Danny, 1986- (author)
- Uppsala universitet,Örebro universitet,Institutionen för naturvetenskap och teknik,Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden,Materialteori,Orebro Univ, Sch Sci & Technol, SE-70182 Orebro, Sweden
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- Chioncel, L. (author)
- Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, Augsburg, Germany; Augsburg Center for Innovative Technologies, University of Augsburg, Augsburg, Germany,Univ Augsburg, Ctr Elect Correlat & Magnetism, Inst Phys, Theoret Phys 3, D-86135 Augsburg, Germany;Univ Augsburg, Augsburg Ctr Innovat Technol, D-86135 Augsburg, Germany
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- Eriksson, Olle, 1960- (author)
- Uppsala universitet,Örebro universitet,Institutionen för naturvetenskap och teknik,Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden,Materialteori,Orebro Univ, Sch Sci & Technol, SE-70182 Orebro, Sweden
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- Kvashnin, Yaroslav (author)
- Uppsala universitet,Materialteori
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(creator_code:org_t)
- American Physical Society, 2020
- 2020
- English.
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In: Physical Review Materials. - : American Physical Society. - 2475-9953. ; 4:2
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Abstract
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- Conducting and magnetic properties of a material often change in some confined geometries. However, a situation where a nonmagnetic semiconductor becomes both metallic and magnetic at the surface is quite rare, or maybe even unique. In this Rapid Communication, we employ first-principles electronic structure theory to predict that such a peculiar magnetic state emerges in a family of quaternary Heusler compounds. We investigate magnetic and electronic properties of CoCrTiP, FeMnTiP, and CoMnVAl. For the latter material, we also analyze the structural stability of various surface terminations. For the ideal CoMn termination we calculate the magnetic exchange interactions and use them for parametrizing an effective spin Hamiltonian. According to our results, magnetism in this material should persist at temperatures at least as high as 160 K.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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