Matches in SemOpenAlex for { <https://semopenalex.org/work/W2782835975> ?p ?o ?g. }
- W2782835975 abstract "It has long been known that the magnetic order in a material can be transiently disrupted by an intense laser pulse, on surprisingly fast sub-picosecond timescales. However, two decades after its discovery, the microscopic physics underlying this behavior is still not completely understood. Here, the authors develop a new extreme ultraviolet (EUV) magneto-optical spectroscopy that allows them to extract the full $dphantom{rule{0}{0ex}}yphantom{rule{0}{0ex}}nphantom{rule{0}{0ex}}aphantom{rule{0}{0ex}}mphantom{rule{0}{0ex}}iphantom{rule{0}{0ex}}c$ complex magneto-optical permittivity of a material. By exciting a Co film with a femtosecond laser pulse, and then scanning both the polarization and arrival time of a high-harmonic probe beam, they extract the instantaneous complex magneto-optical constant of Co across the ${M}_{2,3}$ absorption edge. Through a direct comparison with $aphantom{rule{0}{0ex}}b$ $iphantom{rule{0}{0ex}}nphantom{rule{0}{0ex}}iphantom{rule{0}{0ex}}tphantom{rule{0}{0ex}}iphantom{rule{0}{0ex}}o$ theory, they show that the observed demagnetization is dominated by the excitation of magnons, with a possible small contribution from a reduction of the exchange splitting. This work further demonstrates the deepened insight on magnetism obtained through the recent application of tabletop-scale femtosecond EUV light sources." @default.
- W2782835975 created "2018-01-26" @default.
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- W2782835975 date "2018-01-30" @default.
- W2782835975 modified "2023-10-02" @default.
- W2782835975 title "Direct measurement of the static and transient magneto-optical permittivity of cobalt across the entire <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>M</mml:mi></mml:math> -edge in reflection geometry by use of polarization scanning" @default.
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- W2782835975 doi "https://doi.org/10.1103/physrevb.97.024433" @default.
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