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5 papers · 1 filter
Polaronic behavior of undoped high-Tc cuprates
O. Rösch, O. Gunnarsson, X. J. Zhou +6
We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calc…
Fermi surface evolution and Luttinger theorem in NaCoO: a systematic photoemission study
H. -B. Yang, Z. -H. Pan, A. K. P. Sekharan +9
We report a systematic angle-resolved photoemission study on NaCoO for a wide range of Na concentrations (). In all the metallic samples at different…
The Fermi surface of NaCoO
Peihong Zhang, Weidong Luo, Marvin L. Cohen +1
Doping evolution of the Fermi surface topology of NaCoO is studied systematically. Both local density approximation (LDA) and local spin density approximation (LSDA) predic…
Evidence for a Structurally-driven Insulator-to-metal Transition in VO2: a View from the Ultrafast Timescale
A. Cavalleri, Th. Dekorsy, H. H. Chong +2
We apply ultrafast spectroscopy to establish a time-domain hierarchy between structural and electronic effects in a strongly-correlated electron system. We discuss the case of the…
Direct Observation of High-Temperature Polaronic Behavior In Colossal Magnetoresistive Manganites
N. Mannella, A. Rosenhahn, C. H. Booth +6
The temperature dependence of the electronic and atomic structure of the colossal magnetoresistive oxides (x = 0.3, 0.4) has been studied using core and val…