BROWSE

Related Researcher

Author's Photo

Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

ITEM VIEW & DOWNLOAD

Vortex-glass phase transition and superconductivity in an underdoped (Ba, K)Fe2As2 single crystal

Cited 35 times inthomson ciCited 31 times inthomson ci
Title
Vortex-glass phase transition and superconductivity in an underdoped (Ba, K)Fe2As2 single crystal
Author
Kim, Hyeong-JinLiu, YongOh, Yoon SeokKhim, SeunghyunKim, IngyuStewart, GRKim, Kee Hoon
Keywords
barium compounds; critical exponents; galvanomagnetic effects; glass transition; iron compounds; magnetic anisotropy; magnetic field effects; mixed state; phase diagrams; potassium compounds; superconducting critical field; superconducting transitions
Issue Date
2009-01
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.79, no.1, pp.014514 -
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 T-c=26.2 K. It is found that the anisotropy ratio of the upper critical field H-c2 decreases from 4 to 2.8 with decreasing temperature from T-c 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 T-g=20.7 K and critical exponents z=4.1 and nu=1. Analyses in different magnetic fields produced almost identical critical exponent values, with some variation in T-g, 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 T-g and H-c2 with magnetic field.
URI
Go to Link
DOI
10.1103/PhysRevB.79.014514
ISSN
2469-9950
Appears in Collections:
PHY_Journal Papers
Files in This Item:
PhysRevB.79.014514.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU