Angular dependent vortex glass phase transition in BaFe1.8Co0.2As2 single crystal

Author

Hao, F. ; Zhang, M. ; Teng, M. ; Yin, Y. ; Jiao, W. ; Cao, G. ; Li, X.

Author_Institution

Dept. of Phys., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

By measuring the current-voltage (I-V) characteristics through rotating the crystals in magnetic fields from HIIc to HIIab-plane (θ=0° is defined as HIIc-axis), we systematically studied the angle-resolved VG transition in BaFe_1.8Co_0.2As₂ single crystal. It is found a good three-dimensional (3D) vortex glass (VG) scaling collapse through the angular dependent I-V curves, according to the vortex-glass phase theory. On the other hand, the angular dependent vortex glass transition field H_g and critical current density J_c can be approximately described by the anisotropic Ginzburg-Landau(G-L) model.

Keywords

Ginzburg-Landau theory; barium compounds; cobalt compounds; critical current density (superconductivity); glass transition; iron compounds; mixed state; pnictide superconductors; 3D vortex glass scaling collapse; BaFe_1.8Co_0.2As₂; angle-resolved vortex glass transition; angular dependent I-V curves; angular dependent vortex glass phase transition; anisotropic Ginzburg-Landau model; critical current density; current-voltage characteristics; magnetic fields; single crystal; vortex-glass phase theory; Anisotropic magnetoresistance; Crystals; Glass; Magnetic field measurement; Physics; Type II superconductors;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157084

Filename

7157084