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  • We have grown ultrathin epitaxial Co films on three low-index surfaces of Pd. Their magnetic properties studied by the magneto-optical Kerr effect were correlated with the surface morphology analyzed by scanning tunneling microscopy. A perpendicular magnetic anisotropy in the films appeared after exposure to residual gas at low temperature, after coverage with an Au overlayer or after annealing at 370 K and above. For one- and two-monolayer-thick films the hysteresis loops are reversed with respect to those of thicker Co films. This is due the negative polar Kerr rotation contribution from the Co/Pd interface dominating over the positive polar Kerr rotation contribution from the non-interface part of the Co film. Reversed loops are not seen when the Co films grow in a three-dimensional mode. This indicates a clear correspondence between the mode of growth and the magneto-optical response. The results qualitatively agree with the available band-structure calculations for the Co/Pd multilayers.
  • We have grown ultrathin epitaxial Co films on three low-index surfaces of Pd. Their magnetic properties studied by the magneto-optical Kerr effect were correlated with the surface morphology analyzed by scanning tunneling microscopy. A perpendicular magnetic anisotropy in the films appeared after exposure to residual gas at low temperature, after coverage with an Au overlayer or after annealing at 370 K and above. For one- and two-monolayer-thick films the hysteresis loops are reversed with respect to those of thicker Co films. This is due the negative polar Kerr rotation contribution from the Co/Pd interface dominating over the positive polar Kerr rotation contribution from the non-interface part of the Co film. Reversed loops are not seen when the Co films grow in a three-dimensional mode. This indicates a clear correspondence between the mode of growth and the magneto-optical response. The results qualitatively agree with the available band-structure calculations for the Co/Pd multilayers. (en)
  • Ultratenké epitaxní vrstvy Co byly připraveny na třech různých površích Pd. Jejich magnetické vlastnosti studované pomocí magnetooptického Kerrova jevu byly korelovány s morfologií povrchu těchto vrstev určenou skenovací tunelovou mikroskopií. Vrstvy vykazují kolmou magnetickou anizotropii po expozici ve zbytkové atmosféře za nízkých teplot, po pokrytí filmu vrstvičkou Au nebo po zahřátí na teplotu alespoň 370 K. Vrstvy Co o tloušťce jedné či dvou atomových rovin vykazují hysterezní smyčky převrácené vzhledem ke smyčkám naměřeným pro tlustší vrstvy Co. Příčinou převrácení hysterezní smyčky je dominantní příspěvek rozhraní Co-Pd, který má opačné znaménko vzhledem k příspěvku zbylé části Co vrstvy (bez rozhraní). Převrácené hysterezní smyčky nejsou pozorovány, pokud Co vrstva roste ve třídimenzionálním módu. To demonstruje přímou souvislost mezi růstovým módem a magnetooptickou odezvou. Experimentální výsledky jsou v kvalitativním souladu s dostupnými výpočty pásové struktury Co/Pd multivrstev. (cs)
Title
  • Topology-dependent interface contribution to magneto-optical response from ultrathin Co films grown on the (001), (110), and (111) surfaces of Pd (Article No. 085413)
  • Topology-dependent interface contribution to magneto-optical response from ultrathin Co films grown on the (001), (110), and (111) surfaces of Pd (Article No. 085413) (en)
  • Topologicky závislý příspěvek rozhraní k magnetooptické odezvě ultratenkých Co vrstev na Pd(001), Pd(110) a Pd(111) površích (Článek č. 085413) (cs)
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  • Topology-dependent interface contribution to magneto-optical response from ultrathin Co films grown on the (001), (110), and (111) surfaces of Pd (Article No. 085413)
  • Topology-dependent interface contribution to magneto-optical response from ultrathin Co films grown on the (001), (110), and (111) surfaces of Pd (Article No. 085413) (en)
  • Topologicky závislý příspěvek rozhraní k magnetooptické odezvě ultratenkých Co vrstev na Pd(001), Pd(110) a Pd(111) površích (Článek č. 085413) (cs)
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  • RIV/00216208:11320/06:00002789!RIV07-MSM-11320___
http://linked.open.../vavai/riv/strany
  • 1;9
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  • 504008
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  • RIV/00216208:11320/06:00002789
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  • Topology-dependent; interface; contribution; magneto-optical; response; ultrathin; films; grown; surfaces; Article; 085413 (en)
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  • US - Spojené státy americké
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  • [B2B3D1DB498D]
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  • Physical Review. B. Condensed Matter
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  • 73
http://linked.open...iv/tvurceVysledku
  • Nývlt, Miroslav
http://linked.open...n/vavai/riv/zamer
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  • 1098-0121
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  • 11320
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