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Asian chemical outflow to the Pacific in late spring observed during the PEACE-B aircraft mission
Toward the beta-FeSi2 p-n homo-junction structure
ArticleTHIN SOLID FILMS. 515(22): 8210-8215 (2007)journal articl
Photodegradation of 1,3,5-trichlorobenzene in aqueous surfactant solutions
The original publication is available at www.springerlink.comArticleBULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY. 74(2): 365-372 (2005)journal articl
Ultrahigh-Field Hole Cyclotron Resonance Absorption in InMnAs Films
We have carried out an ultrahigh-field cyclotron resonance study of p-type
In1-xMnxAs films, with Mn composition x ranging from 0% to 2.5%, grown on GaAs
by low-temperature molecular-beam epitaxy. Pulsed magnetic fields up to 500 T
were used to make cyclotron resonance observable in these low-mobility samples.
The clear observation of hole cyclotron resonance is direct evidence of the
existence of a large number of itinerant, effective-mass-type holes rather than
localized d-like holes. It further suggests that the p-d exchange mechanism is
more favorable than the double exchange mechanism in this narrow gap InAs-based
dilute magnetic semiconductor. In addition to the fundamental heavy-hole and
light-hole cyclotron resonance absorption appearing near the
high-magnetic-field quantum limit, we observed many inter-Landau-level
absorption bands whose transition probabilities are stronglydependent on the
sense of circular polarization of the incident light.Comment: 8 pages, 10 Postscript figure
Critical Heat Fluxes on a Flat Plate Attached to One End of a Rectangular Duct Containing Pressurized He II
Transient Heat Transfer Caused by a Stepwise Heat Input to a Flat Plate at the Middle of a Duct Containing Pressurized He II
Coordination and chemical effects on the structural, electronic and magnetic properties in Mn pnictides
Simple structures of MnX binary compounds, namely hexagonal NiAs and
zincblende, are studied as a function of the anion (X = Sb, As, P) by means of
the all-electron FLAPW method within local spin density and generalized
gradient approximations. An accurate analysis of the structural, electronic and
magnetic properties reveals that the cubic structure greatly favours the
magnetic alignment in these compounds leading to high magnetic moments and
nearly half-metallic behaviour for MnSb and MnAs. The effect of the anion
chemical species is related to both its size and the possible hybridization
with the Mn states; both contributions are seen to hinder the magnitude of
the magnetic moment for small and light anions. Our results are in very good
agreement with experiment - where available - and show that the generalized
gradient approximation is essential to correctly recover both the equilibrium
volume and magnetic moment.Comment: 18 pages and 4 figures, Latex-file, submitted to Phys.Rev.
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