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Spin polaronics :
Spin polaronics : Static and dynamic properties of spin polarons in La-doped CaMnO4
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- Bondarenko, Nina G. (author)
- Uppsala universitet,Materialteori
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- Chico, J. (author)
- Division of Materials Theory, Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden; Peter Grünberg Institut and Institute of Advanced Simulation, Forschungszentrum Jülich & JARA, Jülich, Germany,Uppsala Univ, Dept Phys & Astron, Div Mat Theory, Box 516, SE-75121 Uppsala, Sweden.;Forschungszentrum Julich, Peter Grunberg Inst, D-52428 Julich, Germany.;Forschungszentrum Julich, Inst Adv Simulat, D-52428 Julich, Germany.;JARA, D-52428 Julich, Germany.
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- Kvashnin, Yaroslav (author)
- Uppsala universitet,Materialteori
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- Bergman, Anders, 1978- (author)
- Uppsala universitet,Materialteori,Univ Versailles, Univ Paris Sud, CNRS, Maison Simulat,CEA,INRIA,USR 3441, F-91191 Gif Sur Yvette, France;CEA, INAC MEM, L Sim, F-38000 Grenoble, France
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- Skorodumova, Natalia (author)
- KTH,Flerskalig materialmodellering,Uppsala Univ, Dept Phys & Astron, Div Mat Theory, Box 516, SE-75121 Uppsala, Sweden
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- Eriksson, Olle, 1960- (author)
- Uppsala universitet,Örebro universitet,Institutionen för naturvetenskap och teknik,Division of Materials Theory, Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden,Uppsala Univ, Dept Phys & Astron, Div Mat Theory, Box 516, SE-75121 Uppsala, Sweden.;Orebro Univ, Sch Sci & Technol, SE-70182 Orebro, Sweden.,Materialteori
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(creator_code:org_t)
- American Physical Society, 2019
- 2019
- English.
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 100:13
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The static and dynamic properties of spin polarons in La-doped CaMnO3 are explored theoretically, by means of an effective low-energy Hamiltonian. All parameters of the effective Hamiltonian are evaluated from first-principles theory. The Hamiltonian is used to investigate the temperature stability as well as the response to an external applied electric field, for spin polarons in bulk, surface, and as single two-dimensional layers. Technically this involves atomistic spin-dynamics simulations in combination with kinetic Monte Carlo simulations. Where a comparison can be made, our simulations exhibit excellent agreement with available experimental data and previous theory. Remarkably, we find that excellent control of the mobility of spin polarons in this material can be achieved, and that the critical parameters deciding this are the temperature and strength of the applied electrical field. We outline different technological implications of spin polarons, and point to spin polaronics as an emerging subfield of nanotechnology. In particular, we demonstrate that it is feasible to write and erase information on an atomic scale, by use of spin polarons in CaMnO3.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- 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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