Upper critical fields and two-band superconductivity in Sr1-xEux(Fe0.89Co0.11)₂As₂ (x=0.20 and 0.46)

Hu, Rongwei; Mun, Eun Deok; Altarawneh, M. M.; Mielke, C. H.; Zapf, V. S.; Bud'ko, S. L.; Canfield, P. C.

doi:10.1103/PhysRevB.85.064511

Upper critical fields and two-band superconductivity in Sr_1-xEu_x(Fe_0.89Co_0.11)₂As₂ (x=0.20 and 0.46)

Journal Article · Mon Feb 13 00:00:00 EST 2012 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.85.064511· OSTI ID:1099164

Hu, Rongwei; Mun, Eun Deok; Altarawneh, M. M.; Mielke, C. H.; Zapf, V. S.; Bud'ko, S. L.; Canfield, P. C.

The upper critical fields H_c2(T) of single crystals of Sr_1-xEu_x(Fe₀.₈₉Co₀.₁₁)₂As₂ (x=0.20 and 0.46) were determined by radio-frequency penetration depth measurements in pulsed magnetic fields. H_c2(T) approaches the Pauli limiting field but shows an upward curvature with an enhancement from the orbital limited field, as inferred from the Werthamer-Helfand-Hohenberg theory. We discuss the temperature dependence of the upper critical fields and the decreasing anisotropy using a two-band BCS model.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

OSTI ID:: 1099164

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 6 Vol. 85; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

References (24)

Very High Critical Field and Superior J _c -Field Performance in NdFeAsO _0.82 F _0.18 with T _c of 51 K Wang, Xiaolin; Ghorbani, Shaban Reza; Peleckis, Germanas Advanced Materials, Vol. 21, Issue 2 https://doi.org/10.1002/adma.200801527	journal	January 2009
Two-band superconductivity in LaFeAsO0.89F0.11 at very high magnetic fields Hunte, F.; Jaroszynski, J.; Gurevich, A. Nature, Vol. 453, Issue 7197 https://doi.org/10.1038/nature07058	journal	May 2008
Nearly isotropic superconductivity in (Ba,K)Fe2As2 Yuan, H. Q.; Singleton, J.; Balakirev, F. F. Nature, Vol. 457, Issue 7229 https://doi.org/10.1038/nature07676	journal	January 2009
Measuring radio frequency properties of materials in pulsed magnetic fields with a tunnel diode oscillator Coffey, T.; Bayindir, Z.; DeCarolis, J. F. Review of Scientific Instruments, Vol. 71, Issue 12 https://doi.org/10.1063/1.1321301	journal	January 2000
Proximity detector circuits: An alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic field environments Altarawneh, M. M.; Mielke, C. H.; Brooks, J. S. Review of Scientific Instruments, Vol. 80, Issue 6 https://doi.org/10.1063/1.3152219	journal	June 2009
Upper critical field and thermally activated flux flow in LaFeAsO ₁₋ _x F _x Shahbazi, M.; Wang, X. L.; Shekhar, C. Journal of Applied Physics, Vol. 109, Issue 7 https://doi.org/10.1063/1.3566069	journal	April 2011
Demagnetizing factors for rectangular ferromagnetic prisms Aharoni, Amikam Journal of Applied Physics, Vol. 83, Issue 6 https://doi.org/10.1063/1.367113	journal	March 1998
Compensation of the paramagnetic effect on H _c2 by magnetic moments: 700 kG superconductors Fischer, O.; Decroux, M.; Roth, S. Journal of Physics C: Solid State Physics, Vol. 8, Issue 21 https://doi.org/10.1088/0022-3719/8/21/014	journal	November 1975
Superconducting properties and Fermi-surface topology of the quasi-two-dimensional organic superconductor λ-(BETS) ₂ GaCl ₄ (BETS≡bis(ethylene-dithio)tetraselenafulvalene) Mielke, Charles; Singleton, John; Nam, Moon-Sun Journal of Physics: Condensed Matter, Vol. 13, Issue 36 https://doi.org/10.1088/0953-8984/13/36/308	journal	August 2001
Temperature and Purity Dependence of the Superconducting Critical Field, H c 2 . III. Electron Spin and Spin-Orbit Effects Werthamer, N. R.; Helfand, E.; Hohenberg, P. C. Physical Review, Vol. 147, Issue 1 https://doi.org/10.1103/PhysRev.147.295	journal	July 1966
Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors Gurevich, A. Physical Review B, Vol. 67, Issue 18 https://doi.org/10.1103/PhysRevB.67.184515	journal	May 2003
Anisotropic thermodynamic and transport properties of single-crystalline Ba 1 − x K x Fe 2 As 2 ( x = 0 and 0.45) Ni, N.; Bud’ko, S. L.; Kreyssig, A. Physical Review B, Vol. 78, Issue 1 https://doi.org/10.1103/PhysRevB.78.014507	journal	July 2008
Upper critical fields well above 100 T for the superconductor SmFeAsO 0.85 F 0.15 with T c = 46 K Senatore, C.; Flükiger, R.; Cantoni, M. Physical Review B, Vol. 78, Issue 5 https://doi.org/10.1103/PhysRevB.78.054514	journal	August 2008
Upper critical fields and thermally-activated transport of NdFeAsO 0.7 F 0.3 single crystal Jaroszynski, J.; Hunte, F.; Balicas, L. Physical Review B, Vol. 78, Issue 17 https://doi.org/10.1103/PhysRevB.78.174523	journal	November 2008
Determination of anisotropic H c 2 up to 60 T in Ba 0.55 K 0.45 Fe 2 As 2 single crystals Altarawneh, M. M.; Collar, K.; Mielke, C. H. Physical Review B, Vol. 78, Issue 22 https://doi.org/10.1103/PhysRevB.78.220505	journal	December 2008
Phase diagram of superconductivity and antiferromagnetism in single crystals of Sr(Fe 1 − x Co x ) 2 As 2 and Sr 1 − y Eu y (Fe 0 . 88 Co 0 . 12 ) 2 As 2 Hu, Rongwei; Bud’ko, Sergey L.; Straszheim, Warren E. Physical Review B, Vol. 83, Issue 9 https://doi.org/10.1103/PhysRevB.83.094520	journal	March 2011
Anisotropic H c 2 of K 0.8 Fe 1.76 Se 2 determined up to 60 T Mun, E. D.; Altarawneh, M. M.; Mielke, C. H. Physical Review B, Vol. 83, Issue 10 https://doi.org/10.1103/PhysRevB.83.100514	journal	March 2011
Upper critical field and its anisotropy in LiFeAs Zhang, J. L.; Jiao, L.; Balakirev, F. F. Physical Review B, Vol. 83, Issue 17 https://doi.org/10.1103/PhysRevB.83.174506	journal	May 2011
Pseudoisotropic Upper Critical Field in Cobalt-Doped SrFe 2 As 2 Epitaxial Films Baily, S. A.; Kohama, Y.; Hiramatsu, H. Physical Review Letters, Vol. 102, Issue 11 https://doi.org/10.1103/PhysRevLett.102.117004	journal	March 2009
Observation of Magnetic-Field-Induced Superconductivity Meul, H. W.; Rossel, C.; Decroux, M. Physical Review Letters, Vol. 53, Issue 5 https://doi.org/10.1103/PhysRevLett.53.497	journal	July 1984
Upper Limit for the Critical Field in Hard Superconductors Clogston, A. M. Physical Review Letters, Vol. 9, Issue 6 https://doi.org/10.1103/PhysRevLett.9.266	journal	September 1962
Ultra-High-Field Superconductivity Jaccarino, V.; Peter, M. Physical Review Letters, Vol. 9, Issue 7 https://doi.org/10.1103/PhysRevLett.9.290	journal	October 1962
Upper critical magnetic field in Ba0.68K0.32Fe2As2 and Ba(Fe0.93Co0.07)2As2 Gasparov, V. A.; Drigo, L.; Audouard, A. JETP Letters, Vol. 93, Issue 11 https://doi.org/10.1134/S0021364011110038	journal	August 2011
Anisotropy of the Upper Critical Field in a Co-Doped BaFe ₂ As ₂ Single Crystal Kano, Mika; Kohama, Yoshimitsu; Graf, David Journal of the Physical Society of Japan, Vol. 78, Issue 8 https://doi.org/10.1143/JPSJ.78.084719	journal	August 2009

Similar Records

Pauli limiting of the upper critical magnetic field

Journal Article · Tue Feb 28 23:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States) · OSTI ID:6339507

Upper critical field of Ba{sub 1-x}K{sub x}BiO{sub 3} measured by magnetotunneling spectroscopy

Journal Article · Sat Nov 30 23:00:00 EST 1996 · Journal of Low Temperature Physics · OSTI ID:443652

Renormalization effects on the upper critical field for weak electron-phonon coupling

Journal Article · Sat Dec 31 23:00:00 EST 1983 · Phys. Rev. B: Condens. Matter; (United States) · OSTI ID:5195388

Upper critical fields and two-band superconductivity in Sr1-xEux(Fe0.89Co0.11)₂As₂ (x=0.20 and 0.46)

Citation Formats

References (24)

Similar Records

Related Subjects

Upper critical fields and two-band superconductivity in Sr_1-xEu_x(Fe_0.89Co_0.11)₂As₂ (x=0.20 and 0.46)