Ultrafast Magnetization of a Dense Molecular Gas with an Optical Centrifuge
Autor: | Valery Milner, Aleksey Korobenko, Alexander A. Milner |
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Rok vydání: | 2017 |
Předmět: |
Materials science
FOS: Physical sciences General Physics and Astronomy 02 engineering and technology Electron 01 natural sciences 7. Clean energy Molecular physics law.invention Bohr magneton Magnetization Paramagnetism symbols.namesake law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences 010306 general physics Quantum Physics Centrifuge Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Spin polarization 021001 nanoscience & nanotechnology Laser Magnetic field symbols Condensed Matter::Strongly Correlated Electrons Quantum Physics (quant-ph) 0210 nano-technology |
Zdroj: | Physical Review Letters. 118 |
ISSN: | 1079-7114 0031-9007 |
Popis: | Strong laser-induced magnetization of oxygen gas at room temperature and atmospheric pressure is achieved experimentally on the sub-nanosecond time scale. The method is based on controlling the electronic spin of paramagnetic molecules by means of manipulating their rotation with an optical centrifuge. Spin-rotational coupling results in high degree of spin polarization on the order of one Bohr magneton per centrifuged molecule. Owing to the non-resonant interaction with the laser pulses, the demonstrated technique is applicable to a broad class of paramagnetic rotors. Executed in a high-density gas, it may offer an efficient way of generating macroscopic magnetic fields remotely (as shown in this work), producing large amount of polarized electrons and converting electronic to nuclear spin polarization. |
Databáze: | OpenAIRE |
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