Magnetic-field tuned anisotropy in superconducting Rb(x)Fe(2-y)Se(2)

S. Bosma; R. Puzniak; A. Krzton-Maziopa; M. Bendele; E. Pomjakushina; K. Conder; H. Keller; S. Weyeneth

doi:10.1103/PhysRevB.85.064509

Magnetic-field tuned anisotropy in superconducting Rb(x)Fe(2-y)Se(2)

Superconductivity 2012-02-23 v2

Authors: S. Bosma , R. Puzniak , A. Krzton-Maziopa , M. Bendele , E. Pomjakushina , K. Conder , H. Keller , S. Weyeneth

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Abstract

The anisotropic superconducting properties of a Rb(x)Fe(2-y)Se(2) single crystal with transition temperature 32 K were investigated by means of SQUID and torque magnetometry, probing the effective magnetic penetration depth and the magnetic penetration depth anisotropy. Interestingly, the anisotropy is found to be temperature independent in the superconducting state, but strongly field dependent. This unusual anisotropic behavior, together with a large zero-temperature effective magnetic penetration depth is possibly related to a superconducting state heavily biased by the coexisting antiferromagnetic phase.

Keywords

superconducting Rb(x)Fe(2-y)Se(2) magnetic-field tuned anisotropy SQUID torque magnetometry magnetic penetration depth antiferromagnetic phase

Cite

@article{arxiv.1109.1430,
  title  = {Magnetic-field tuned anisotropy in superconducting Rb(x)Fe(2-y)Se(2)},
  author = {S. Bosma and R. Puzniak and A. Krzton-Maziopa and M. Bendele and E. Pomjakushina and K. Conder and H. Keller and S. Weyeneth},
  journal= {arXiv preprint arXiv:1109.1430},
  year   = {2012}
}

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6 pages, accepted in Physical Review B

Magnetic-field tuned anisotropy in superconducting Rb(x)Fe(2-y)Se(2)

Abstract

Keywords

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