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author = "Ishida, H"

Found 53 documents, displaying page 1 of 6

Static and quasistatic response of Ag surfaces to a uniform electric field

Author(s) : Ishida, H. , Liebsch, A.
Description : This version is available at the following Publisher URL: http://prb.aps.org
Repository : JUWEL (JUelicher Wissenschaftliche Elektronische Literatur)
Language(s) : German

Comparative study of endotoxin-induced hypotension in kininogen-deficient rats with that in normal rats.

Author(s) : Ueno, A , Ishida, H , Oh-ishi, S
Description : 1. The aim of this study was to clarify the role of endogenous bradykinin (BK) in the hypotensive response induced by lipopolysaccharide (LPS) by comparing the degree of hypotension caused by LPS in a strain of specific pathogen-free (SPF) Brown Norway (B/N), kininogen-deficient mutant Katholiek rat...
Repository : Europe PubMed Central
Language(s) : English

Subband filling and Mott transition in Ca_{2-x}Sr_xRuO_4

Author(s) : Liebsch, A. , Ishida, H.
Description : A new concept is proposed for the paramagnetic metal insulator transition in the layer perovskite Ca_{2-x}Sr_xRuO_4. Whereas the pure Sr compound is metallic up to very large Coulomb energies due to strong orbital fluctuations, structural changes induced by doping with Ca give rise to a interorbit...
Repository : arXiv
Language(s) : Undetermined

An embedding potential definition of channel functions

Description : We show that the imaginary part of the embedding potential, a generalised logarithmic derivative, defined over the interface between an electrical lead and some conductor, has orthogonal eigenfunctions which define conduction channels into and out of the lead. In the case of an infinitely extended...
Repository : arXiv
Language(s) : Undetermined

Coulomb correlations do not fill the e'_g hole pockets in Na_{0.3}CoO_2

Author(s) : Liebsch, A. , Ishida, H.
Description : There exists presently considerable debate over the question whether local Coulomb interactions can explain the absence of the small e'_g Fermi surface hole pockets in photoemission studies of Na_{0.3}CoO_2. By comparing dynamical mean field results for different single particle Hamiltonians and e...
Repository : arXiv
Language(s) : Undetermined

The Mott insulator LaTiO_3 in heterostructures with SrTiO_3 is metallic

Author(s) : Ishida, H. , Liebsch, A.
Description : It is shown that LaTiO_3 in superlattices with SrTiO_3 is not a Mott insulator but a strongly correlated metal. The tetragonal lattice geometry imposed by the SrTiO_3 substrate leads to an increase of the Ti 3d t2g band width and a reversal of the t2g crystal field relative to the orthorhombic bul...
Repository : arXiv
Language(s) : Undetermined

Embedding approach for dynamical mean field theory of strongly correlated heterostructures

Author(s) : Ishida, H. , Liebsch, A.
Description : We present an embedding approach based on localized basis functions which permits an efficient application of the dynamical mean field theory (DMFT) to inhomogeneous correlated materials, such as semi-infinite surfaces and heterostructures. In this scheme, the semi-infinite substrate leads connect...
Repository : arXiv
Language(s) : Undetermined

Correlation induced spin freezing transition in FeSe: a dynamical mean field study

Author(s) : Liebsch, A. , Ishida, H.
Description : The effect of local Coulomb interactions on the electronic properties of FeSe is explored within dynamical mean field theory combined with finite-temperature exact diagonalization. The low-energy scattering rate is shown to exhibit non-Fermi-liquid behavior caused by the formation of local moments...
Repository : arXiv
Language(s) : Undetermined

Coulomb blockade and Kondo effect in the electronic structure of Hubbard molecules connected to metallic leads: a finite-temperature exact-diagonalization study

Author(s) : Ishida, H. , Liebsch, A.
Description : The electronic structure of small Hubbard molecules coupled between two non-interacting semi-infinite leads is studied in the low bias-voltage limit. To calculate the finite-temperature Green's function of the system, each lead is simulated by a small cluster, so that the problem is reduced to tha...
Repository : arXiv
Language(s) : Undetermined

Block of pancreatic ATP-sensitive K+ channels and insulinotrophic action by the antiarrhythmic agent, cibenzoline.

Description : 1. We investigated the effect of cibenzoline (a class Ia antiarrhythmic drug) on basal insulin secretory activity of rat pancreatic islets and ATP-sensitive K+ channels (KATP) in single pancreatic beta cells of the same species, using radioimmunoassay and patch clamp techniques. 2. Micromolar cibenz...
Repository : Europe PubMed Central
Language(s) : English

Found 53 documents, displaying page 1 of 6