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Light-Induced Metas...
Light-Induced Metastable Hidden Skyrmion Phase in the Mott Insulator Cu2OSeO3
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- Truc, Benoit (författare)
- Swiss Federal Institute of Technology
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- Sapozhnik, Alexey A. (författare)
- Swiss Federal Institute of Technology
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- Tengdin, Phoebe (författare)
- Swiss Federal Institute of Technology
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- Viñas Boström, Emil (författare)
- Max Planck Institute for the Structure and Dynamics of Matter
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- Schönenberger, Thomas (författare)
- Swiss Federal Institute of Technology
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- Gargiulo, Simone (författare)
- Swiss Federal Institute of Technology
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- Madan, Ivan (författare)
- Swiss Federal Institute of Technology
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- LaGrange, Thomas (författare)
- Swiss Federal Institute of Technology
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- Magrez, Arnaud (författare)
- Swiss Federal Institute of Technology
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- Verdozzi, Claudio (författare)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Rubio, Angel (författare)
- Max Planck Institute for the Structure and Dynamics of Matter,Simons Foundation
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- Rønnow, Henrik M. (författare)
- Swiss Federal Institute of Technology
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- Carbone, Fabrizio (författare)
- Swiss Federal Institute of Technology
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Advanced Materials. - 0935-9648. ; 35:33
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The discovery of a novel long-lived metastable skyrmion phase in the multiferroic insulator Cu2OSeO3 visualized with Lorentz transmission electron microscopy for magnetic fields below the equilibrium skyrmion pocket is reported. This phase can be accessed by exciting the sample non-adiabatically with near-infrared femtosecond laser pulses and cannot be reached by any conventional field-cooling protocol, referred as a hidden phase. From the strong wavelength dependence of the photocreation process and via spin-dynamics simulations, the magnetoelastic effect is identified as the most likely photocreation mechanism. This effect results in a transient modification of the magnetic free energy landscape extending the equilibrium skyrmion pocket to lower magnetic fields. The evolution of the photoinduced phase is monitored for over 15 min and no decay is found. Because such a time is much longer than the duration of any transient effect induced by a laser pulse in a material, it is assumed that the newly discovered skyrmion state is stable for practical purposes, thus breaking ground for a novel approach to control magnetic state on demand at ultrafast timescales and drastically reducing heat dissipation relevant for next-generation spintronic devices.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- femtosecond laser pulses
- magnetoelastic effect
- multiferroic materials
- skyrmions
- spintronics
- topological materials
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Truc, Benoit
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Sapozhnik, Alexe ...
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Tengdin, Phoebe
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Viñas Boström, E ...
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Schönenberger, T ...
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Gargiulo, Simone
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visa fler...
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Madan, Ivan
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LaGrange, Thomas
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Magrez, Arnaud
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Verdozzi, Claudi ...
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Rubio, Angel
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Rønnow, Henrik M ...
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Carbone, Fabrizi ...
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