Journal Article PreJuSER-14051

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Magnetism of 3d transition-metal monolayers on Rh(100)

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2011
APS College Park, Md.

Physical review / B 83(2), 024407 () [10.1103/PhysRevB.83.024407]

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Abstract: We employ the full-potential linearized augmented plane-wave method to report a systematic density-functional theory study of the magnetic properties of the 3d transition-metal (V, Cr, Mn, Fe, Co, and Ni) monolayers deposited on the Rh(100) substrate. We find that all monolayer films are magnetic. The size of the local magnetic moments across the transition-metal series follows Hund's rule with a maximum magnetic moment of 3.77 mu(B) for Mn. The largest induced magnetic moment of about 0.46 mu(B) was found for Rh atoms adjacent to the Co film. When relaxations are included, we predict a ferromagnetic (FM) ground state for V, Co, and Ni, while Cr, Mn, and Fe favor a c(2 x 2) antiferromagnetic (AFM) state, a checkerboard arrangement of up and down magnetic moments. The magnetic anisotropy energies of these ultrathin magnetic films are calculated for the FM and AFM states. With the exception of Cr, the easy axis of the magnetization is predicted to be in the film plane. Rough estimates of the ordering temperatures are given. To gain an understanding of the c(2 x 2) AFM state of Fe/Rh(100), we analyze this result with respect to the trends of the magnetic order of 3d monolayers on other 4d substrates, such as Pd(100) and Ag(100).

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Note: We acknowledge valuable discussions with J. Kudrnovsky and A. Lehnert, and the financial support of the ESF EUROCORES Programme SONS under Contract No. ERAS-CT-2003-980409.

Contributing Institute(s):
  1. Quanten-Theorie der Materialien (PGI-1)
  2. Quanten-Theorie der Materialien (IAS-1)
  3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
  4. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)
Research Program(s):
  1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2011
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 Record created 2012-11-13, last modified 2023-04-26