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23 papers · 1 filter
NMR and LDA evidence for spiral magnetic order in the chain cuprate LiCu2O2
A. A Gippius, E. N. Morozova, A. S. Moskvin +5
We report on {6,7}Li nuclear magnetic resonance measurements of the spin-chain compound LiCu2O2 in the paramagnetic and magnetically ordered states. Below T about 24 K the NMR line…
The 2-matrix of the spin-polarized electron gas: contraction sum rules and spectral resolutions
P. Ziesche, F. Tasnadi
The spin-polarized homogeneous electron gas with densities and for electrons with spin `up' () and spin `down' (), respectively, i…
Reduced density matrices, their spectral resolutions, and the Kimball-Overhauser approach
P. Ziesche, F. Tasnadi
Recently, it has been shown, that the pair density of the homogeneous electron gas can be parametrized in terms of 2-body wave functions (geminals), which are scattering solutions…
Anomalous Ferromagnetism of Monatomic Co Wire at the Pt(111) Surface Step Edge
Alexander B. Shick, Frantishek Maca, Peter M. Oppeneer
A first-principles investigation of the anomalous ferromagnetism of a quasi-one-dimensional Co chain at the Pt(111) step edge is reported. Our calculations show that the symmetry b…
Circular dichroism and bilayer splitting in the normal state of underdoped (Pb,Bi)Sr(CaY)CuO and overdoped (Pb,Bi)SrCaCuO
S. V. Borisenko, A. A. Kordyuk, S. Legner +11
We report an ARPES investigation of the circular dichroism in the first Brillouin zone (BZ) of under- and overdoped Pb-Bi2212 samples. We show that the dichroism has opposite signs…
Evidence for CuO conducting band splitting in the nodal direction of Bi-2212
A. A. Kordyuk, S. V. Borisenko, A. N. Yaresko +12
Using angle-resolved photoemission spectroscopy with ultimate momentum resolution we have explicitly resolved the bilayer splitting in the nodal direction of Bi-2212. The splitting…