TY - JOUR
T1 - 17 O-NMR Knight shift study of the interplay between superconductivity and pseudogap in (Cax La1-x)(Ba1.75-x La0.25+x) Cu3 Oy
AU - Cvitanić, T.
AU - Pelc, D.
AU - PoŽek, M.
AU - Amit, E.
AU - Keren, Amit
PY - 2014/8/12
Y1 - 2014/8/12
N2 - We report systematic 17O-NMR measurements on the high-Tc cuprate (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy, for four different families (different x). Using Knight shift data, we show that the pseudogap opening temperature T* is much higher than Tc near optimal doping, unlike structurally similar YBCO. In addition, at constant doping the pseudogap temperature does not vary with x, in contrast to Tc. This puts constraints on the nature of the pseudogap and position of the quantum critical point inside the superconducting dome.
AB - We report systematic 17O-NMR measurements on the high-Tc cuprate (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy, for four different families (different x). Using Knight shift data, we show that the pseudogap opening temperature T* is much higher than Tc near optimal doping, unlike structurally similar YBCO. In addition, at constant doping the pseudogap temperature does not vary with x, in contrast to Tc. This puts constraints on the nature of the pseudogap and position of the quantum critical point inside the superconducting dome.
UR - http://www.scopus.com/inward/record.url?scp=84907252799&partnerID=8YFLogxK
U2 - https://doi.org/10.1103/PhysRevB.90.054508
DO - https://doi.org/10.1103/PhysRevB.90.054508
M3 - مقالة
SN - 1098-0121
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 5
M1 - 054508
ER -