Vortex phases and glassy dynamics in the highly anisotropic superconductor HgBa2CuO4+δ

摘要

( ) Temperature dependent magnetization ( ) measured at  = 5 Oe after zero-field cooling, revealing  ≈ 95.9 K, consistent with expectations for optimally doped Hg1201. Angular dependence of the ( ) transverse ( ) and ( ) longitudinal ( ) components of the magnetization, and ( ) the ratio / in an applied field of 0.1 T and temperatures 80 K and 85 K. Note that in ( ), the data for the two temperatures overlap and the black curve is a fit of the 80 K data to Eq. ( ) that yields an anisotropy factor  ≈ 32.