title: Quantitative test of SO(5) symmetry in the vortex state of Nd(1.85)Ce(0.15)CuO4.
abstract: By numerically solving models with competing superconducting and antiferromagnetic orders, we study the magnetic field dependence of the antiferromagnetic moment in both the weak and strong field regimes. Through a comparison with the neutron scattering results of Kang et al. and Matsuura et al. on Nd(1.85)Ce(0.15)CuO4, we conclude that this system is close to a SO(5) symmetric critical point. We also make a quantitative prediction on increasing the upper critical field B(c2) and the superconducting transition temperature T(c) by applying an in-plane magnetic field.
authors.affiliation: Department of Applied Physics, McCullough Building, Stanford University, Stanford, California 94305, USA.
authors.forename: Han-Dong
authors.initials: HD
authors.lastname: Chen
authors.forename: Congjun
authors.initials: C
authors.lastname: Wu
authors.forename: Shou-Cheng
authors.initials: SC
authors.lastname: Zhang