Nonlinear magneto-optics of Fe monolayers from first principles: Structural dependence and spin-orbit coupling strength

Dewitz, J. P.; Chen, Jian; Hübner, Wolfgang

doi:10.1103/physrevb.58.5093

Cited by 16 publications

(19 citation statements)

References 75 publications

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“…9,23,[30][31][32][33][34][35] While for simple metals like Al, Liebsch developed a theory, which properly accounts for the dynamic screening effects in the presence of the electric field of the light 36,37 is in semiquantitative agreement with experiments, 38,39 this theory has not yet been extended to 3d-metals. Therefore, currently one is restricted to simple phenomenological models like that presented in Sec.…”

Section: Discussionmentioning

confidence: 99%

Magnetization-induced second harmonic generation from the Ni/Cu interface in multilayers on Cu(001)

Vollmer

Regensburger

et al. 2000

Phys. Rev. B

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Ultrathin Ni films in Cu/Ni/Cu͑001͒ bilayers and exchange coupled Ni films in Ni/Cu/Ni/Cu͑001͒ trilayers are investigated by magnetization induced second harmonic generation ͑MSHG͒. The results are analyzed in a model of localized nonlinear polarizabilities at the interfaces. We show that antiferromagnetic coupling in the Ni/Cu/Ni trilayers is observable with MSHG due to the presence of quantum well states ͑QWS's͒ in the Cu layer. The influence of the QWS's on the SHG from a Ni film in a Cu/Ni/Cu͑001͒ bilayer is weaker compared to the case of Fe or Co bilayers.

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Section: Discussionmentioning

confidence: 99%

Magnetization-induced second harmonic generation from the Ni/Cu interface in multilayers on Cu(001)

Vollmer

Regensburger

et al. 2000

Phys. Rev. B

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“…A femtosecond laser system, tuned to 1.55 eV, was used as the fundamental frequency light source. Calculations predict a strong MSHG response from the Fe films in this spectral region [11]. Unamplified, 130 fs Ti:sapphire laser pulses of average power of 0.9 W were used, at a repetition rate of 76 MHz.…”

Section: Methodsmentioning

confidence: 99%

Optimizing the magnetic contrast in the optical second‐harmonic response of capped magnetic nanostructures grown on vicinal surfaces

Carroll¹,

Fleischer²,

McGilp³

2008

Phys. Status Solidi (c)

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Measuring the magnetic response from buried interfaces using magnetic second harmonic generation (MSHG) is difficult due to the general complexity of the response and the often poor signal‐to‐noise ratio (SNR). Low dimensional nanostructures grown by self‐assembly at aligned atomic steps, which typically exhibit only 1m symmetry, are particularly challenging. Near‐normal incidence SHG simplifies the crystallographic nonlinear response from such low symmetry systems by effectively excluding z‐dependent tensor components. A phenomenology is developed to show that, for 1m vicinal systems, careful choices of input and output polarization and experimental geometry can produce enhanced magnetic contrast and thus allow magnetic hysteresis loops with improved SNR to be extracted. An example of the application of this new MSHG approach to Fe monolayers grown on vicinal W(110), capped by 16 nm of Au, is discussed. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…A femtosecond laser system, tuned to 1.55 eV, was used as the fundamental frequency light source. Calculations predict a strong MSHG response from the Fe films in this spectral region [22]. Unamplified, 130 fs Ti:sapphire laser pulses of average power of 0.9 W were used, at a repetition rate of 76 MHz and with a beam size of 40 μm at the sample.…”

Section: Methodsmentioning

confidence: 99%

Extracting the hysteresis loops of magnetic interfaces from optical second-harmonic intensity measurements

McGilp¹,

Carroll²,

Fleischer³

2007

J. Phys.: Condens. Matter

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Surface-and interface-sensitive optical techniques, such as optical secondharmonic generation (SHG), allow the buried interfacial structure of centrosymmetric materials to be explored through thin capping layers, and magnetic SHG (MSHG) extends this to magnetic interfaces. However, the variation of the MSHG intensity with magnetic field does not measure hysteresis loops directly, because the loops are displaced by an amount dependent on the crystallographic response and its phase difference with respect to the magnetic response, and also because there is a quadratic magnetization contribution to the SH intensity that may be significant. Two new procedures are reported for extracting hysteresis loops directly from the MSHG intensity. The first is applicable to all magnetic interfaces, including exchange-biased structures, where the saturation magnetization for positive and negative magnetic fields is equal and opposite. The second applies to all centrosymmetric hysteresis loops. These procedures correct for the quadratic response, allowing experimental geometries to be chosen that maximize the magnetic contribution, thus improving the signal-to-noise ratio and the sensitivity of the technique.

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Nonlinear magneto-optics of Fe monolayers from first principles: Structural dependence and spin-orbit coupling strength

Cited by 16 publications

References 75 publications

Magnetization-induced second harmonic generation from the Ni/Cu interface in multilayers on Cu(001)

Magnetization-induced second harmonic generation from the Ni/Cu interface in multilayers on Cu(001)

Optimizing the magnetic contrast in the optical second‐harmonic response of capped magnetic nanostructures grown on vicinal surfaces

Extracting the hysteresis loops of magnetic interfaces from optical second-harmonic intensity measurements

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