Nonmonotonic dx2-y2 Superconducting Order Parameter in Nd2-xCexCuO4
G. Blumberg, A. Koitzsch, A. Gozar, B. S. Dennis, C. A. Kendziora, P. Fournier, R. L. Greene
Abstract
Low energy polarized electronic Raman scattering of the electron doped superconductor Nd1.85Ce0.15CuO4 (Tc=22 K) has revealed a nonmonotonic dx2-y2 superconducting order parameter. It has a maximum gap of 4.4 kBTc at Fermi surface intersections with antiferromagnetic Brillouin zone (the ``hot spots'') and a smaller gap of 3.3 kBTc at fermionic Brillouin zone boundaries. The gap enhancement in the vicinity of the ``hot spots'' emphasizes role of antiferromagnetic fluctuations and similarity in the origin of superconductivity for electron- and hole-doped cuprates.
Create a lesson
Related papers
Superconductivity in Pb2-xBixPd Single Crystals
S. Srivastava, R. P. Singh
Type-I superconductivity in a quasi-2D topologically nontrivial YbBi2
Karolina Górnicka, Sudip Malick, Joanna Bławat et al.
Generic thermodynamics of condensates with extremely small superfluid density ---Application to UTe2 and hidden second phase transition---
Kazushige Machida
Vortex-mediated spin current injection into two-dimensional superconductor NbSe2
Meng Yang, Xiaolong Yin, Jingjing Liu et al.
Superconductivity at the metal-insulator phase boundary in a bulk nickelate at ambient pressure
Hyo-Bin Ahn, Xinglong Chen, Hong Zheng et al.
Crystallographic imperfections and exotic superconductivity of UBe13
Andreas Leithe-Jasper, Markus König, Yusei Shimizu et al.