Evidence for a second one-dimensional set of states shedding light on the normal phase of high-Tc superconductors
N. L. Saini, J. Avila, M. C. Asensio, S. Tajima, G. D. Gu, N. Koshizuka, A. Lanzara, A. Bianconi
DOI 10.1103/PhysRevB.57.R11101 · Physical Review B
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Abstract
We have identified a set of electronic states with a one-dimensional dispersion in the Γ=(0,0) to M1=(π,0) direction crossing the Fermi surface at one point kF=0.2±0.03π by angle-resolved photoemission. The one-dimensional character of these electronic states is demonstrated by missing dispersion along the orthogonal direction, observed in energy-distribution curves, and by k-space mapping of the Fermi surface, using angle scanning photoemission. The observed electronic states beyond the well-known large Fermi surface provoke the models based on charge and spin ordering in the CuO2 plane of high-Tc superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | unknown |
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