Structure and magnetism of pulsed-laser-deposited ultrathin films of Fe on Cu(100)

Jenniches, H.; Shen, Jianxin; Mohan, Ch. V.; Manoharan, S. Sundar; Barthel, J.; Ohresser, P.; Klaúa, M.; Kirschner, J.

doi:10.1103/physrevb.59.1196

Cited by 77 publications

(93 citation statements)

References 50 publications

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“…Such experiments have been carried out already using laser ablation. 50 Interestingly, the first diffraction intensity oscillation and layer-by-layer growth were seen very clearly in these experiments. The first oscillation was even more pronounced than observed here at the lowest deposition rates.…”

Section: Discussionmentioning

confidence: 57%

“…On the other hand, deposition of Fe/Cu͑100͒ by laser ablation, which gives a high instantaneous deposition rate, was found to have a significant impact upon the initial growth and magnetism. 50 The aim of the present work is to systematically vary the initial growth of thermally evaporated Fe/Cu͑100͒ films and to determine whether this has any impact upon magnetism. We concentrate on the opposite extreme of laser ablation: that is, very low deposition rates extending below 0.5 ML/min, which have seldom been used in prior work.…”

Section: Introductionmentioning

confidence: 99%

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Modification of initial growth and magnetism in Fe/Cu(100)

et al. 2001

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The influence of the deposition rate upon the initial growth morphology and magnetism of ultrathin Fe films on the Cu͑100͒ surface has been studied with low-energy electron diffraction, reflection high-energy electron diffraction, surface magneto-optical Kerr effect ͑SMOKE͒, and spin-polarized low-energy electron microscopy ͑SPLEEM͒. Dramatic changes in the first diffraction intensity oscillation during growth at room temperature indicate that simultaneous growth of the first and second atomic layers is converted to more perfect layer-bylayer growth when the deposition rate is reduced below 0.5 ML/min. SPLEEM and SMOKE demonstrate the sensitivity of magnetism in Fe/Cu͑100͒ to details of interface formation during the initial growth in this range of deposition rates. Kinetic and thermodynamic mechanisms that relate to place exchange at the interface are discussed as the source of the observed growth and magnetic behavior.

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Section: Discussionmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Modification of initial growth and magnetism in Fe/Cu(100)

et al. 2001

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“…In particular, fcc iron films exhibit a large variety of structural and magnetic properties that depend delicately on the iron layer thickness and preparation conditions. [1][2][3] The close competition between different magnetic states has also been confirmed by first-principles electronic structure calculations. In the case of Fe, the local spin-density approximation ͑LSDA͒ predicts a nonmagnetic close-packed ground state instead of the ferromagnetic bcc phase found in nature.…”

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confidence: 50%

Ab initiocalculation of phase boundaries in iron along the bcc-fcc transformation path and magnetism of iron overlayers

2001

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“…All STM measurements were performed in the constant current mode at a 0.2 -0.5 V positive tip bias and a 0.1-0.5 nA tunneling current. Compared to thermal deposition, an extremely high instantaneous flux of atoms in PLD favors much larger nucleation density [6,7]. This helps to suppress the formation of a Cu001c2 2-Pd ordered alloy in the initial growth stage for Pd=Cu100 [8] and the phase transition at 1 ML from fcc to body-centered tetragonal structure for Cu=Pd100 [9].…”

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confidence: 99%

Strain Relief in Cu-Pd Heteroepitaxy

Przybylski

Trushin

et al. 2005

Phys. Rev. Lett.

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We present experimental and theoretical studies of Pd/Cu(100) and Cu/Pd(100) heterostructures in order to explore their structure and misfit strain relaxation. Ultrathin Pd and Cu films are grown by pulsed laser deposition at room temperature. For Pd/Cu, compressive strain is released by networks of misfit dislocations running in the [100] and [010] directions, which appear after a few monolayers already. In striking contrast, for Cu/Pd the tensile overlayer remains coherent up to about 9 ML, after which multilayer growth occurs. The strong asymmetry between tensile and compressive cases is in contradiction with continuum elasticity theory, and is also evident in the structural parameters of the strained films. Molecular Dynamics calculations based on classical many-body potentials confirm the pronounced tensile-compressive asymmetry and are in good agreement with the experimental data.Comment: 4 pages, 5 figures, to appear in Phys. Rev. Let

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Structure and magnetism of pulsed-laser-deposited ultrathin films of Fe on Cu(100)

Cited by 77 publications

References 50 publications

Modification of initial growth and magnetism in Fe/Cu(100)

Modification of initial growth and magnetism in Fe/Cu(100)

Ab initiocalculation of phase boundaries in iron along the bcc-fcc transformation path and magnetism of iron overlayers

Strain Relief in Cu-Pd Heteroepitaxy

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