Vortex-glass phase transition and superconductivity in an underdoped (Ba,K)Fe2As2 single crystal
Hyeong-Jin Kim, Yong Liu, Yoon Seok Oh, Seunghyun Khim, Ingyu Kim, G. R. Stewart, Kee Hoon Kim
DOI 10.1103/PhysRevB.79.014514 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Measurements of magnetotransport and current-voltage (I−V) characteristics up to 9 T were used to investigate the vortex phase diagram of an underdoped (Ba,K)Fe2As2 single crystal with Tc=26.2 K. It is found that the anisotropy ratio of the upper critical field Hc2 decreases from 4 to 2.8 with decreasing temperature from Tc to 24.8 K. Consistent with the vortex-glass theory, the I−V curves measured at H=9 T can be well scaled with the vortex-glass transition temperature of Tg=20.7 K and critical exponents z=4.1 and ν=1. Analyses in different magnetic fields produced almost identical critical exponent values, with some variation in Tg, corroborating the existence of the vortex-glass transition in this underdoped (Ba,K)Fe2As2 single crystal up to 9 T. A vortex phase diagram is presented, based on the evolution of Tg and Hc2 with magnetic field.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26.2 | Pressure not reported | onset |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25.6 | Pressure not reported | onset |
| LaFeAsO0.89F0.11 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba0.6K0.4Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38 | Pressure not reported | unknown |
Similar papers
Vortex-glass phase transition and superconductivity in an under- doped (Ba,K)Fe2As2 single crystal
similarity 1.00Kim, Hyeong-Jin et al. · 2010 · arXiv:0810.3186
Source status unknown — claims are unverified
Influence of spin fluctuations on the thermal conductivity in superconducting Ba(Fe1−xCox)2As2
similarity 0.94Andrew F. May et al.
Source status unknown — claims are unverified
Upper critical field, anisotropy, and superconducting properties of Ba1−xKxFe2As2 single crystals
similarity 0.94Zhao-Sheng Wang et al.
Source status unknown — claims are unverified
Spin fluctuations and superconductivity in a three-dimensional tight-binding model for BaFe2As2
similarity 0.94S. Graser et al.
Source status unknown — claims are unverified
Multiband thermal transport in the iron-based superconductor Ba1−xKxFe2As2
similarity 0.94Marcin Matusiak & Thomas Wolf
Source status unknown — claims are unverified
Experimental investigation of the suppressed superconducting gap and double-resonance mode in Ba1−xKxFe2As2
similarity 0.94S. Ideta et al.
Source status unknown — claims are unverified