2,773 research outputs found
Sensitive detection of irreversible switching in a single FePt nanosized dot
科研費報告書収録論文(課題番号:13555087・基盤研究(B)(2) ・H13~H15/研究代表者:北上, 修/ナノ磁性ドット規則配列格子の磁気的挙動の解明と超高密度メモリーへの応用
Electronic Structures of Fe_x$Si Probed by Photoemission Spectroscopy
The electronic structures of the Heusler type compounds Fe_x$Si in
the concentration range between x = 0 and x = 1 have been probed by
photoemission spectroscopy (PES). The observed shift of Si 2p core- level and
the main valence band structres indicate a chemical potential shift to higher
energy with increasing x. It is also clarified that the density of state at
Fermi edge is owing to the collaboration of V 3d and Fe 3d derived states.
Besides the decrease of the spectral intensity near Fermi edge with increasing
x suggests the formation of pseudo gap at large x.Comment: 4 pages, 5 figures, 5 reference
Noise-induced macroscopic bifurcations in globally-coupled chaotic units
Large populations of globally-coupled identical maps subjected to independent
additive noise are shown to undergo qualitative changes as the features of the
stochastic process are varied. We show that for strong coupling, the collective
dynamics can be described in terms of a few effective macroscopic degrees of
freedom, whose deterministic equations of motion are systematically derived
through an order parameter expansion.Comment: Phys. Rev. Lett., accepte
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