Two Superconducting Phases in CeRh_1-xIr_xIn_5

M. Nicklas; V. A. Sidorov; H. A. Borges; P. G. Pagliuso; J. L. Sarrao; J. D. Thompson

doi:10.1103/PhysRevB.70.020505

Two Superconducting Phases in CeRh_1-xIr_xIn_5

Strongly Correlated Electrons 2007-08-07 v1 Superconductivity

Authors: M. Nicklas , V. A. Sidorov , H. A. Borges , P. G. Pagliuso , J. L. Sarrao , J. D. Thompson

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Abstract

Pressure studies of CeRh_1-xIr_xIn_5 indicate two superconducting phases as a function of x, one with T_c >= 2 K for x < 0.9 and the other with T_c < 1.2 K for x > 0.9. The higher T_c phase, phase-1, emerges in proximity to an antiferromagnetic quantum-critical point; whereas, Cooper pairing in the lower T_c phase-2 is inferred to arise from fluctuations of a yet to be found magnetic state. The T-x-P phase diagram of CeRh_1-xIr_xIn_5, though qualitatively similar, is distinctly different from that of CeCu_2(Si_1-xGe_x)_2.

Keywords

superconductivity CeRh_1-xIr_xIn_5 quantum critical point magnetic fluctuations phase diagram

Cite

@article{arxiv.cond-mat/0405636,
  title  = {Two Superconducting Phases in CeRh_1-xIr_xIn_5},
  author = {M. Nicklas and V. A. Sidorov and H. A. Borges and P. G. Pagliuso and J. L. Sarrao and J. D. Thompson},
  journal= {arXiv preprint arXiv:cond-mat/0405636},
  year   = {2007}
}

Comments

5 pages, 3 figures

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