Measurement and multiple-scattering calculation of Cu<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi></mml:math>-edge x-ray magnetic circular dichroism spectra from an exchange-coupled<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Co</mml:mi><mml:mo>∕</mml:mo><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow></mml:math>multilayer

Nagamatsu, Shin‐ichi; Matsumoto, Hironobu; Fujikawa, Takashi; Ishiji, Kotaro; Hashizume, H.

doi:10.1103/physrevb.70.174442

Cited by 13 publications

(11 citation statements)

References 43 publications

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“…This was ascribed to the incomplete screening of the core holes by s + p electrons in Cu where the d electrons are quenched. 19 The magnitude of the Ru K-edge dichroism ͑ p ͒ observed in the present samples ͑−3 ϫ 10 −4 ͒ almost equals that of the Cu K-edge dichroism from a Co/ Cu multilayer at the second antiferromagnetic peak of the coupling oscillation. 19 This is rather intriguing since the interlayer coupling energies of Co/ Cu and Co/ Ru multilayers are very different, 0.3 erg cm −2 versus 5 erg cm −2 at the first antiferromagnetic peak.…”

Section: Resultsmentioning

confidence: 54%

“…19 The magnitude of the Ru K-edge dichroism ͑ p ͒ observed in the present samples ͑−3 ϫ 10 −4 ͒ almost equals that of the Cu K-edge dichroism from a Co/ Cu multilayer at the second antiferromagnetic peak of the coupling oscillation. 19 This is rather intriguing since the interlayer coupling energies of Co/ Cu and Co/ Ru multilayers are very different, 0.3 erg cm −2 versus 5 erg cm −2 at the first antiferromagnetic peak. 1 It is to be seen whether Ru thin films sandwiched between Co layers show similar spectra to those given in Fig.…”

Section: Resultsmentioning

confidence: 54%

“…4 we overlay a scaled version of an XMCD spectrum observed from a Co/ Cu multilayer at the Co K edge. 19 The thickness of our Co-Ru alloy samples was not suitable for measurements at the Co K edge. When displayed on the E − E 0 scale, where E 0 is the edge energy ͑22 117 eV for Ru and 7709 eV for Co͒, the Ru and Co spectra fit each other surprisingly well.…”

Section: Resultsmentioning

confidence: 98%

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Observation of x-ray magnetic circular dichroism at theRuKedge inCo−Rualloys

et al. 2006

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X-ray magnetic circular dichroism spectra have been measured from dilute Ru alloys of Co at the Ru K edge, evidencing the induced magnetization on Ru in contact with ferromagnetic Co. This was made possible using circularly polarized probing beams of approximately 22 keV in energy obtained from a germanium Laue-reflection phase retarder at a synchrotron source. The Ru dichroism is quite small with a main peak of −3 ϫ 10 −4 in flipping ratio at about 6 eV above the K absorption edge. The spectrum has a very similar profile to the one of the Co K-edge dichroism. Ab initio calculations indicate that the Ru dichroism is generated by the p-orbital magnetic moment on the core-hole site, which is induced through the p-d hybridization between Co and Ru.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 98%

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Observation of x-ray magnetic circular dichroism at theRuKedge inCo−Rualloys

et al. 2006

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“…It should be noted, that according to the best knowledge of the author, there are few if any other beamlines operational beyond ID12, where it is possible to record the K -edge XMCD of a dilute system with reasonable accuracy, whereas XMCD at the Co K -edge of Co metal was also measured at other synchrotrons, e.g., [131,132,133]; where the spectral features are identical to the ones in Figure 2, but only the XMCD published in [133] yields a comparable quality. Although this limits the availability to the general community, the findings summarized here shall demonstrate that valuable information can be extracted from K -edge XMCD spectra, since they are more sensitive to the local structural arrangement than the

L_{3 / 2}

-edges.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Element Specific Versus Integral Structural and Magnetic Properties of Co:ZnO and Gd:GaN Probed with Hard X-ray Absorption Spectroscopy

Ney

2010

Materials

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Dilute magnetic semiconductors (DMS) are envisioned as sources of spin-polarized carriers for future semiconductor devices which simultaneously utilize spin and charge of the carriers. The hope of discovering a DMS with ferromagnetic order up to room temperature still motivates research on suitable DMS materials. Two candidate wide-band gap DMS are Gd:GaN and Co:ZnO. We have used hard X-ray absorption spectroscopy (XAS) and in particular X-ray linear dichroism (XLD) and X-ray magnetic circular dichroism (XMCD) to study both DMS materials with element specificity and compare these findings with results from integral SQUID magnetometry as well as electron paramagnetic resonance (EPR).

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“…X-ray magnetic circular dichroism (XMCD) studies at the Cu K edge were carried out about the multilayer of a ferromagnetic element with a nonmagnetic Cu metal such as Fe/Cu, Co/Cu and Gd/Cu [2][3][4][5][6]. They showed that the 4p band in a few Cu layers is polarized by the adjacent magnetic atoms.…”

Section: Introductionmentioning

confidence: 99%