Point Contact Spectroscopy Measurements of Ba(Fe_{0.96}Co_{0.04})_2As_2 Single Crystals

• Authors: P. Szabó , J. Girovský , Z. Pribulová , T. Samuely , S. Bud'ko , P. Canfield , P. Samuely
• Languages of publication: EN

Abstracts

EN

Point contact spectroscopy results are presented on the electron underdoped Ba(Fe_{0.96}Co_{0.04})_2As_2 single crystals. Two superconducting energy gaps with coupling values 2 Δ_1 ∿ kT_{c} ≈ 2.55 and 2 Δ_2 ∿ kT_{c} ≈ 11 at T_{c} = 15.5 K have been observed in the point contact spectra. The temperature dependence of the normal state background of the point contact spectra observed between T_{c} and T_{N} indicates antiferromagnetic origin of the V-shaped minimum at zero bias.

Keywords

EN

74.50.+r; 74.70.Ad; 74.62.Dh

Discipline

• 74.50.+r: Tunneling phenomena; Josephson effects(for SQUIDs, see 85.25.Dq; for Josephson devices, see 85.25.Cp; for Josephson junction arrays, see 74.81.Fa)
• 74.62.Dh: Effects of crystal defects, doping and substitution(for specific crystal defects, see 61.72.-y)
• 74.70.Ad: Metals; alloys and binary compounds (including A15, MgB2, etc.)

• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 1045-1046

Dates

published

2010-11

Contributors

author

P. Szabó

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences & P.J. Šafárik Universityi, Watsonova 47, SK-04353 Košice, Slovakia

author

J. Girovský

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences & P.J. Šafárik Universityi, Watsonova 47, SK-04353 Košice, Slovakia

author

Z. Pribulová

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences & P.J. Šafárik Universityi, Watsonova 47, SK-04353 Košice, Slovakia

author

T. Samuely

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences & P.J. Šafárik Universityi, Watsonova 47, SK-04353 Košice, Slovakia

author

S. Bud'ko

• Ames Laboratory and Iowa State University, Ames, IA 50011, USA

author

P. Canfield

• Ames Laboratory and Iowa State University, Ames, IA 50011, USA

author

P. Samuely

• Ames Laboratory and Iowa State University, Ames, IA 50011, USA

References

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Identifiers

DOI

10.12693/APhysPolA.118.1045