Absence of local magnetic moments in Ru and Rh impurities and clusters on Ag(100) and Pt(997)

J. Honolka; K. Kuhnke; L. Vitali; A. Enders; K. Kern; S. Gardonio; C. Carbone; S. R. Krishnakumar; P. Bencok; S. Stepanow; P. Gambardella

doi:10.1103/PhysRevB.76.144412

Absence of local magnetic moments in Ru and Rh impurities and clusters on Ag(100) and Pt(997)

J. Honolka, K. Kuhnke, L. Vitali, A. Enders, K. Kern, S. Gardonio, C. Carbone, S. R. Krishnakumar, P. Bencok, S. Stepanow, P. Gambardella

Department of Physics

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Abstract

The magnetism of quench-condensed Ru and Rh impurities and metal films on Ag(100) and Pt(997) has been studied using x-ray magnetic circular dichroism. In the coverage range between 0.22 and 2.0 ML, no dichroic signal was detected at the M3,2 absorption edges of Ru on Ag(100) at a temperature of 5 K in the presence of an applied magnetic field. The same was found for coverages between 0.12 and 0.5 ML of Rh on Ag(100) and Pt(997). It is concluded that the magnetic moments of single impurities, small clusters of various shape, and monolayers of the 4d metals are below the detection limit of 0.04 μB per atom. These results provide an unambiguous determination of the local magnetic moment of Ru and Rh deposited on nonmagnetic transition-metal surfaces, which are in contrast with theoretical predictions. © 2007 The American Physical Society.

Original language	English
Article number	144412
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	76
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.76.144412
Publication status	Published - 9 Oct 2007

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Honolka, J., Kuhnke, K., Vitali, L., Enders, A., Kern, K., Gardonio, S., Carbone, C., Krishnakumar, S. R., Bencok, P., Stepanow, S., & Gambardella, P. (2007). Absence of local magnetic moments in Ru and Rh impurities and clusters on Ag(100) and Pt(997). Physical Review B - Condensed Matter and Materials Physics, 76(14), [144412]. https://doi.org/10.1103/PhysRevB.76.144412

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abstract = "The magnetism of quench-condensed Ru and Rh impurities and metal films on Ag(100) and Pt(997) has been studied using x-ray magnetic circular dichroism. In the coverage range between 0.22 and 2.0 ML, no dichroic signal was detected at the M3,2 absorption edges of Ru on Ag(100) at a temperature of 5 K in the presence of an applied magnetic field. The same was found for coverages between 0.12 and 0.5 ML of Rh on Ag(100) and Pt(997). It is concluded that the magnetic moments of single impurities, small clusters of various shape, and monolayers of the 4d metals are below the detection limit of 0.04 μB per atom. These results provide an unambiguous determination of the local magnetic moment of Ru and Rh deposited on nonmagnetic transition-metal surfaces, which are in contrast with theoretical predictions. {\textcopyright} 2007 The American Physical Society.",

author = "J. Honolka and K. Kuhnke and L. Vitali and A. Enders and K. Kern and S. Gardonio and C. Carbone and Krishnakumar, {S. R.} and P. Bencok and S. Stepanow and P. Gambardella",

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doi = "10.1103/PhysRevB.76.144412",

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T1 - Absence of local magnetic moments in Ru and Rh impurities and clusters on Ag(100) and Pt(997)

AU - Honolka, J.

AU - Kuhnke, K.

AU - Vitali, L.

AU - Enders, A.

AU - Kern, K.

AU - Gardonio, S.

AU - Carbone, C.

AU - Krishnakumar, S. R.

AU - Bencok, P.

AU - Stepanow, S.

AU - Gambardella, P.

PY - 2007/10/9

Y1 - 2007/10/9

N2 - The magnetism of quench-condensed Ru and Rh impurities and metal films on Ag(100) and Pt(997) has been studied using x-ray magnetic circular dichroism. In the coverage range between 0.22 and 2.0 ML, no dichroic signal was detected at the M3,2 absorption edges of Ru on Ag(100) at a temperature of 5 K in the presence of an applied magnetic field. The same was found for coverages between 0.12 and 0.5 ML of Rh on Ag(100) and Pt(997). It is concluded that the magnetic moments of single impurities, small clusters of various shape, and monolayers of the 4d metals are below the detection limit of 0.04 μB per atom. These results provide an unambiguous determination of the local magnetic moment of Ru and Rh deposited on nonmagnetic transition-metal surfaces, which are in contrast with theoretical predictions. © 2007 The American Physical Society.

AB - The magnetism of quench-condensed Ru and Rh impurities and metal films on Ag(100) and Pt(997) has been studied using x-ray magnetic circular dichroism. In the coverage range between 0.22 and 2.0 ML, no dichroic signal was detected at the M3,2 absorption edges of Ru on Ag(100) at a temperature of 5 K in the presence of an applied magnetic field. The same was found for coverages between 0.12 and 0.5 ML of Rh on Ag(100) and Pt(997). It is concluded that the magnetic moments of single impurities, small clusters of various shape, and monolayers of the 4d metals are below the detection limit of 0.04 μB per atom. These results provide an unambiguous determination of the local magnetic moment of Ru and Rh deposited on nonmagnetic transition-metal surfaces, which are in contrast with theoretical predictions. © 2007 The American Physical Society.

U2 - 10.1103/PhysRevB.76.144412

DO - 10.1103/PhysRevB.76.144412

M3 - Article

VL - 76

IS - 14

M1 - 144412

ER -

Absence of local magnetic moments in Ru and Rh impurities and clusters on Ag(100) and Pt(997)

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