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Showing papers in "Solid State Communications in 1986"


Journal ArticleDOI
TL;DR: In this article, the effect of the exact shape of the microcrystal and the relationship between the width, shift and asymmetry of the Raman line is calculated and is in good agreement with available experimental data.

1,957 citations


Journal ArticleDOI
TL;DR: In this paper, it was observed that the ratio, A/γ2, has a common value of 1.0 × 10−5 μωcm (mole K/mJ)2 for all of the heavy Fermion compounds.

855 citations


Journal ArticleDOI
TL;DR: In this article, it has been shown that the form of a low-frequency boson peak in Raman scattering is universal for glasses of different chemical compositions and that from this form one can determine the structural correlation function, i.e. the character of violations of ordered arrangement of atoms within several coordination spheres in non-crystalline solids.

366 citations


Journal ArticleDOI
TL;DR: In this paper, it was shown that the internal strain in [111] growth axis strained-layer superlattices generate polarization fields by the piezoelectric effect and the electric fields produced by these polarization fields can be very large.

220 citations


Journal ArticleDOI
TL;DR: In this article, a simple variational calculation of the ground state properties of the electron-hole system confined in three-dimensional quantum wells with spherical shape is presented, where the radius of the wall is reduced to a few times the effective Bohr radius of a bulk exciton.

207 citations


Journal ArticleDOI
TL;DR: In this article, the effect of resonant impurity scattering on the properties of superconducting heavy fermion compounds was investigated within a self-consistent theory of pair-breaking.

157 citations


Journal ArticleDOI
TL;DR: In this paper, two new, metastable, phases of Si have been discovered, with tetragonal structures, and X-ray diffraction data on these new phases are presented.

124 citations


Journal ArticleDOI
TL;DR: In this article, the photoluminescence of GaAs/Si grown by OMCVD has been analyzed as a function of temperature and the dominant high temperature line identified as a conduction-band-to-valence-band transition.

117 citations


Journal ArticleDOI
TL;DR: The measured quantum efficiency of CdO in the range 1.0

112 citations


Journal ArticleDOI
TL;DR: A superlattice consisting of alternating layers of two simple-cubic Heisenberg ferromagnets is considered in this paper, where the dispersion equation for spin waves propagating in a general direction in the superlatinice is derived by the transfer-matrix method.

110 citations


Journal ArticleDOI
TL;DR: The pyrochlore-structure material Y2Mo2O7 is apparently a well-ordered crystalline compound with a concentrated magnetic, Mo4+, sublattice.

Journal ArticleDOI
TL;DR: In this article, X-ray diffraction studies showed that the paraelectric phase has monoclinic symmetry (space group P 2 1 a with a = 14.074(2), b = 9.048(2).

Journal ArticleDOI
TL;DR: In this paper, unit cell dimensions and positional parameters for the HfTe5 type structures of ZrTe5, as derived from powder X-ray and neutron diffraction data, are reported at 10 and 293 K.

Journal ArticleDOI
TL;DR: In this article, He(I) photoemission spectroscopy was used to study the surface of SnO 2 (110) and TiO 2(110) surfaces prepared by argon ion bombardment of stoichiometric crystals.

Journal ArticleDOI
B.N.J. Persson1, J. E. Demuth1
TL;DR: In this article, a simple model for inelastic electron tunnelling between a metal probe tip and a surface is presented and the inelastically tunnelled cross section resulting from vibrational or electronic excitation of an adsorbed molecule is estimated.

Journal ArticleDOI
TL;DR: In a semiconductor with high concentration of resonant donor states in the conduction band or resonant acceptor states in valence band, the Fermi level is pinned to the resonant state and only some of the ionized donors (or acceptors) are ionized as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this article, electron spin resonance measurements carried out on thin films of polythiophene in situ during electrochemical doping with ClO4 were used to demonstrate the spinless character of the doping induced charge states at dilute to intermediate doping concentrations.

Journal ArticleDOI
TL;DR: In this article, the photoinduced infrared absorption of polythiophene was measured and spectral features below the noise level of previous doping and photogeneration experiments provided evidence for weakly infrared active bipolaron shape oscillations predicted by calculations based on the continuum model for conjugated polymers.

Journal ArticleDOI
V. Mosser1, Dieter Weiss1, Klaus von Klitzing1, K. H. Ploog1, G. Weimann1 
TL;DR: In this paper, the density of states of a two dimensional electron gas in a GaAs-AlGaAs hetereostructure was analyzed by measuring the magnetocapacitance in magnetic fields up to 6 Tesla at temperatures below 10 K.

Journal ArticleDOI
TL;DR: In this paper, a series of Mg doped congruent LiNbO3 crystals were investigated by UV a nd IR spectrophotometry and AC conductivity.

Journal ArticleDOI
TL;DR: In this paper, the photoluminesence in the edge emission region of Al x Ga 1−x N> (0 ≦ x ≦ 0.24) has been studied.

Journal ArticleDOI
TL;DR: In this article, experimental evidence of A 1 and E 1 longitudinal optical modes in Raman spectra of GaN is reported for the first time and the static dielectric constant and the effective charge are also calculated.

Journal ArticleDOI
TL;DR: A class of new organic conducting salts α'−(BEDT-TTF)2X with X− = Ag(CN)2−, Au(CN), 2− and AuBr2− were synthesized, and their structures determined by single crystal x-ray diffraction.

Journal ArticleDOI
TL;DR: In this article, it was shown that the electron conduction on the TCNQ column is superior to the hole conduction in the BEDT-TTF only along the stacking direction and only above the phase transition.

Journal ArticleDOI
TL;DR: In this paper, fast transient photoconductivity measurements of trans -polyacetylene as a function of temperature and photon energy indicate a relatively high quantum efficiency for the photoproduction of mobile, charged, nonlinear excitations.

Journal ArticleDOI
TL;DR: In this article, the temperature dependence of ultrasonic attenuation in superconducting UPt3 was investigated and a correlation hump of the density-density correlation function was found to be present.

Journal ArticleDOI
TL;DR: The dispersion curve of the Rayleigh phonon on Cu(100) has been measured by high resolution electron energy loss spectroscopy throughout the two-dimensional Brillouin zone in the ΓX direction.

Journal ArticleDOI
TL;DR: In this article, the adsorption of ethylene on the Si(111)(7×7) surface has been studied at 300 K using high-resolution electron energy loss spectroscopy.

Journal ArticleDOI
TL;DR: In this article, the freezing temperature of an Ising spin glass model was studied for all values of Δ and it was shown that for Δ greater than twice the exchange interaction no spin glass transition takes place.

Journal ArticleDOI
TL;DR: The magnetic properties of the mixed crystal of galvinoxyl radical (2,6-di-t -butyl-4-(3,5)-di- t −butyl)-4-oxocyclohexa-2,5-dienylidenemethyl) -phenoxyl in 6:1 ratio have been studied in this paper.