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Periodic Density of States Modulations in Superconducting
C. Howald, H. Eisaki, N. Kaneko +2
In this paper we show, using scanning tunneling spectroscopy (STS), the existence of static striped density of electronic states in nearly optimally doped $\rm Bi_2Sr_2CaCu_2O_{8+δ…
Sliding Density-Wave in Sr_{14}Cu_{24}O_{41} Ladder Compounds
G. Blumberg, P. Littlewood, A. Gozar +4
We used transport and Raman scattering measurements to identify the insulating state of self-doped spin 1/2 two-leg ladders of Sr_{14}Cu_{24}O_{41} as a weakly pinned, sliding dens…
Collective density wave excitations in two-leg Sr_{14-x}Ca_xCu_{24}O_{41} ladders
A. Gozar, G. Blumberg, P. B. Littlewood +4
Raman measurements in the 1.5 - 20 cm-1 energy range were performed on single crystals of Sr_{14-x}Ca_xCu_{24}O_{41}. A quasielastic scattering peak (QEP) which softens with coolin…
Genuine Electronic States of Vanadium Perovskites Revealed by High-Energy Photoemission
A. Sekiyama, H. Fujiwara, S. Imada +6
Bulk-sensitive high-resolution photoemission was carried out on a prototype 3d1 metallic Sr1-xCaxVO3. In a strong contrast to so far reported results, the bulk spectral functions a…
Nodal metallic behavior of lightly-doped LaSrCuO
T. Yoshida, X. J. Zhou, T. Sasagawa +10
Lightly-doped LaSrCuO in the so-called "insulating" spin-glass/diagonal-stripe phase has been studied by angle-resolved photoemission spectroscopy. A quasi-particle…
Infrared signatures of charge stripes in La(2-x)Sr(x)CuO(4)
A. Lucarelli, S. Lupi, M. Ortolani +9
The in-plane optical conductivity of seven La(2-x)Sr(x)CuO(4) single crystals with x between 0 and 0.15 has been studied from 30 to 295 K. All doped samples exhibit strong peaks in…