Zobrazeno 1 - 10
of 699
pro vyhledávání: '"JEPSEN O."'
Autor:
Schnering H. G. von, Grin Yu., Kaupp M., Somer M., Kremer R. K., Jepsen O., Chatterji T., Weiden M.
Publikováno v:
Zeitschrift für Kristallographie - New Crystal Structures, Vol 213, Iss 1-4, Pp 260-260 (1998)
Externí odkaz:
https://doaj.org/article/84b95e34b77d46c0b49b2cd599cdd466
Publikováno v:
Phys. Rev. B 81, 245113 (2010)
We present a method for calculating the electronic structure of correlated materials based on a truly first-principles LDA+U scheme. Recently we suggested how to calculate U from first-principles, using a method which we named constrained RPA (cRPA).
Externí odkaz:
http://arxiv.org/abs/1004.1321
Autor:
Perucchi, A., Marini, C., Valentini, M., Postorino, P., Sopracase, R., Dore, P., Hansmann, P., Jepsen, O., Sangiovanni, G., Toschi, A., Held, K., Topwal, D., Sarma, D. D., Lupi, S.
The metal to insulator transition in the charge transfer NiS{2-x}Se{x} compound has been investigated through infrared reflectivity. Measurements performed by applying pressure to pure NiS2 (lattice contraction) and by Se-alloying (lattice expansion)
Externí odkaz:
http://arxiv.org/abs/0811.2154
Autor:
Kent, P. R. C., Saha-Dasgupta, T., Jepsen, O., Andersen, O. K., Macridin, A., Maier, T. A., Jarrell, M., Schulthess, T. C.
Publikováno v:
Physical Review B 78 035132 (2008)
Using a combined local density functional theory (LDA-DFT) and quantum Monte Carlo (QMC) dynamic cluster approximation approach, the parameter dependence of the superconducting transition temperature Tc of several single-layer hole-doped cuprate supe
Externí odkaz:
http://arxiv.org/abs/0806.3770
Publikováno v:
Phys. Rev. Lett. 101, 026408 (2008)
The outstanding discrepancy between the measured and calculated (local-density approximation) Fermi surfaces in the well-characterized, paramagnetic Fermi liquid Sr2RhO4 is resolved by including the spin-orbit coupling and Coulomb repulsion. This res
Externí odkaz:
http://arxiv.org/abs/0804.0762
Due to the orthorhombic distortion of the lattice, the electronic hopping integrals along the $a$ and $b$ diagonals, the orthorhombic directions, are slightly different. We calculate their difference in the LDA and find $t_{a}^{\prime}-t_{b}^{\prime}
Externí odkaz:
http://arxiv.org/abs/0710.5325
Autor:
Kim, J. S., Xie, W. -H., Kremer, R. K., Babizhetskyy, V., Jepsen, O., Simon, A., Ahn, K. S., Raquet, B., Rakoto, H., Broto, J. -M., Ouladdiaf, B.
We present the results of a crystal structure determination using neutron powder diffraction as well as the superconducting properties of the rare-earth sesquicarbide La2C3 (Tc ~ 13.4 K) by means of specific heat and upper critical field measurements
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703279
An undoped cuprate with apical fluorine and inner (i) and outer (o) CuO2-layers is a 60 K superconductor whose Fermi surface (FS) has large n- and p-doped sheets with the SC gap on the n-sheet twice that on the p -sheet (Y. Chen et al.). The Fermi su
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607198
The Hubbard \emph{U} of the \emph{3d} transition metal series as well as SrVO$_{3}$, YTiO$_{3}$, Ce and Gd has been estimated using a recently proposed scheme based on the random-phase approximation. The values obtained are generally in good accord w
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603138
Publikováno v:
Physical Review B 72, 184509 (2005)
Using the full potential linear muffin-tin orbitals (FP-LMTO) method we examine the pressure-dependence of superconductivity in the two metallic phases of Boron: bct and fcc. Linear response calculations are carried out to examine the phonon frequenc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507283