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20002025
most citedCritical phenomena in complex networks

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Showing 2006 · cond-mat.mtrl-sciShow all

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cond-mat.mtrl-sci2006

Comparative study of phase transitions in polycrystalline and epitaxial BaTiO3 thin films by means of specific heat measurements

B. Strukov, S. Davitadze, V. Lemanov +3

The experimental data on the thermal properties of the nanostructured perovskite ferroelectrics are presented and analysed. The ability of the modified 3w method for specific heat…

cond-mat.mtrl-sci2006★ 20 cited

Exciton spin decay modified by strong electron-hole exchange interaction

G. V. Astakhov, A. V. Koudinov, K. V. Kavokin +7

We study exciton spin decay in the regime of strong electron-hole exchange interaction. In this regime the electron spin precession is restricted within a sector formed by the exte…

cond-mat.mtrl-sci2006★ 77 cited

Single-particle states in spherical Si/SiO quantum dots

A. S. Moskalenko, J. Berakdar, A. A. Prokofiev +1

We calculate ground and excited electron and hole levels in spherical Si quantum dots inside SiO in a multiband effective mass approximation. Luttinger Hamiltonian is used for…

cond-mat.mtrl-sci2006★ 31 cited

Optical spin pumping of modulation doped electrons probed by a two-color Kerr rotation technique

H. Hoffmann, G. V. Astakhov, T. Kiessling +5

We report on optical spin pumping of modulation electrons in CdTe-based quantum wells with low intrinsic electron density (by 10^10 cm^{-2}). Under continuous wave excitation, we r…

cond-mat.mtrl-sci2006★ 34 cited

Structure peculiarities of cementite and their influence on the magnetic characteristics

A. K. Arzhnikov, L. V. Dobysheva

The iron carbide is studied by the first-principle density functional theory. It is shown that the crystal structure with the carbon disposition in a prismatic environment…

cond-mat.mtrl-sci2006★ 33 cited

Anharmonicity of BaTiO_3 single crystals

Y. L. Wang, A. K. Tagantsev, D. Damjanovic +3

By analyzing the dielectric non-linearity with the Landau thermodynamic expansion, we find a simple and direct way to assess the importance of the eighth order term. Following this…

cond-mat.mtrl-sci2006★ 4 cited

The effect of electronic entropy on temperature peculiarities of the frequency characteristics of two interacting anharmonic vibrational modes in Zr

V. Yu. Trubitsin

A 2D temperature-dependent effective potential is calculated for the interacting longitudinal and transverse phonons of zirconium in the frozen-phonon model. The effective…

cond-mat.mtrl-sci2006★ 74 cited

Depolarizing-Field Effect in Strained Nanoscale Ferroelectric Capacitors and Tunnel Junctions

N. A. Pertsev, H. Kohlstedt

The influence of depolarizing field on the magnitude and stability of a uniform polarization in ferroelectric capacitors and tunnel junctions is studied using a nonlinear thermodyn…

cond-mat.mtrl-sci2006★ 10 cited

Anomalous pressure dependence of the atomic displacements in the relaxor ferroelectric PbMgTaO

S. N. Gvasaliya, V. Pomjakushin, B. Roessli +3

The crystal structure of the PbMgTaO (PMT) relaxor ferroelectric was studied under hydrostatic pressure up to GPa by means of powder neutron diffractio…

cond-mat.mtrl-sci2006★ 21 cited

Multiple transfer of angular momentum quanta from a spin-polarized hole to magnetic ions in ZnMnSe/ZnBeSe quantum wells

A. V. Akimov, A. V. Scherbakov, D. R. Yakovlev +4

The magnetization kinetics in (Zn,Mn)Se/(Zn,Be)Se quantum wells has been studied on a ps-time scale after pulsed laser excitation. The magnetization induced by an external magnetic…