Magnetic transition metals by A. Goldmann (auth.), A. Goldmann (eds.)

By A. Goldmann (auth.), A. Goldmann (eds.)

Photoelectron spectroscopy has matured significantly over the past decade. The experimental thoughts have been greater impressively and a deeper theoretical perception into the underlying mechanisms of photoemission can be completed. the current quantity III/23C2 is a seriously and as entire as attainable tabulation of knowledge at the bulk digital constitution of magnetic transition metals, received via electron and photon spectroscopies. This quantity offers, along with the photoelectron effects, and calculated dispersion curves, additionally a restricted set of different facts like lattice constants and paintings services beneficial within the context of band constitution info. Tables of often used symbols and of abbreviations are given in a normal advent the place additionally definitions of the amounts and a few historic comments are included.

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Calculated Σ2 bands which do not contribute to normal-emission spectra are dotted. Along the top the energy in eV w. r. to EF of the final state band is given [85S1]. Fig. 72. Fe. Occupied bulk electronic structure. Measured E vs. k energy band dispersions in the Σ direction of the bulk BZ as derived from ARPES spectra. Filled circles are experimental data from [90S2]. For comparison, the peak positions from [85S1] are reproduced (open circles) except those of Σ4 symmetry. Calculated bands of Σ1 and Σ3 symmetries from [77C1] are drawn as solid lines (majority spin) and dotted lines(minority spin).

Data points which project into gaps at H are due to transitions from initial states near Γ. Along the top the energy in eV w. r. to EF of the final state band is given. Photon energy corresponding to data points is indicated [84T2]. La n d o l t - B ö r n s t e i n New Series III/23C2 Ref. p. 4 Fe (Iron) Fig. 69. Fe. Occupied bulk electronic structure. Measured E vs. 79). Crosses mark even symmetry states and open circles odd states. Filled circles are from measurements with unpolarized light. Photon energies corresponding to the data points are indicated.

Occupied surface electronic structure. 2 eV photon energy. The light is unpolarized and incident at 30° off normal. 24 eV for normal emission is assigned to a surface state [83W1]. For the measured dispersion which indicates an additional critical point at 2 π/2a corresponding to an antiferromagnetic lattice of sc bulk symmetry see LB Vol. III/24b, Chap. 1 or [83W1]. La n d o l t - B ö r n s t e i n New Series III/23C2 Ref. p. 2 Cr (Chromium) 33 Fig. 34. Same as Fig. 8 eV photon energy. The peak near the Fermi energy for normal emission is assigned to a surface state [86P2].

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