@inproceedings{1a8a9615ae8841b89e76d4f889a73e2e,
title = "Evolution of coherence and superconductivity in electron-doped cuprates",
abstract = "The superconducting (SC) phase diagram of the electron-doped cuprates has been explored by Raman spectroscopy as a function of doping x, temperature T, and magnetic field H. The data is consistent with nonmonotonic SC order parameter (OP) of the d-wave form. The persistence of SC coherence peaks in the B2g channel for all dopings implies that superconductivity is mainly governed by interactions in the vicinity of (±π/2a, ±π/2a31) regions of the Brillouin zone. Effective upper critical field lines H c2*(T,x) at which the superfluid stiffness vanishes and Hc22Δ(T,x) at which the SC amplitude is suppressed by field have been determined. The difference between the two quantities suggests the presence of phase fluctuations that increase for x < 0.15. It is found that the field suppresses the magnitude of the SC gap linearly at an anomalously large rate. Hc22Δ value that is about 10 T for optimally doped samples decreases below a Tesla for overdoped cuprates.",
keywords = "Magnetic field, Raman scattering, Superconductivity",
author = "G. Blumberg and Qazilbash, {M. M.} and Dennis, {B. S.} and Greene, {R. L.}",
year = "2006",
doi = "10.1063/1.2354816",
language = "English (US)",
isbn = "0735403473",
series = "AIP Conference Proceedings",
pages = "525--526",
booktitle = "LOW TEMPERATURE PHYSICS",
note = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 ; Conference date: 10-08-2006 Through 17-10-2006",
}