Vortex State of Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$ via ${}^{205}$Tl NMR at 2 Tesla

Abstract

We report a ${}^{205}$Tl NMR study of vortex state for an aligned polycrystalline sample of an overdoped high-$T_c$ superconductor Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$ ($T_c\sim$85 K) with magnetic field 2 T along the c axis. We observed an imperfect vortex lattice, so-called Bragg glass at $T$=5 K, coexistence of vortex solid with liquid between 10 and 60 K, and vortex melting between 65 and 85 K. No evidence for local antiferromagnetic ordering at vortex cores was found for our sample.

arXiv comment4 pages with 5 figures

References in corpus (8)

• Elastic theory of flux lattices in presence of weak disorder
• SO(5) Theory of Antiferromagnetism and Superconductivity
• Field dependence of the vortex structure in d-wave and s-wave superconductors
• Antiferromagnetic Vortex Core of Tl_2Ba_2CuO_{6+x} Studied by Nuclear Magnetic Resonance
• Superconducting Magnetization above the Irreversibility Line in Tl2Ba2CuO6
• Zn-Neighbor Cu NQR in Zn-Substituted YBa2Cu3O7-d and YBa2Cu4O8
• Site-selective nuclear magnetic relaxation time in a superconducting vortex state
• Theory of NMR as a local probe for the electronic structure in the mixed state of the high-$T_c$ cuprates

Cited by in corpus (2)

• Uniform hole doping in HgBa${}_2$Ca${}_2$Cu${}_3$O${}_{8+\delta }$ studied by ${}^{63}$Cu NMR
• Site-selective ${}^{63}$Cu NMR study of the vortex cores of Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$