Two superconducting phases in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CeRh</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ir</mml:mi></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">In</mml:mi></mml:mrow><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>

“…The mechanism of SC in CeIrIn5 has not been clear yet. Interestingly, the pressure study in CeRh1-xIrxIn5 reported that there are two SC phase [9]. The SC phase at lower and higher x are called SC1 and SC2, respectively [9].…”

Section: Introductionmentioning

confidence: 99%

Physical properties of Cd doped CeIrIn₅ under pressure

Tsunoda¹,

Hirose²,

Settai³

2017

Proc. 17th Int. Conf. On High Pressure in Semiconductor Physics &Amp; Workshop on High-Pressure Study on Superconducting

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We measured the electrical resistivity ρ of CeIr(In1-xCdx)5 under pressure for x = 0.05 and 0.10, which show the onset of superconductivity (SC) at Tsc onset ~ 0.9 K and antiferromagnetic transition at TN ~ 3.4 K. For x = 0.05, Tsc onset increases by applying pressure up to 2.8 GPa and zero resistivity is observed at Tsc ρ=0 above 2.4 GPa. For x = 0.10, the pressure dependence of TN shows peak at around 2 GPa and TN seems to be 0 K toward 3 GPa, where SC phase appears. The maximum value of Tsc ρ=0 is independent on amount of doped Cd, showing 1.35 K. We analyzed the temperature dependence of the electrical resistivity ρ for x = 0.05 and 0.10 under pressure using the following equation, ρ = ρ0 + AT n . This analysis revealed that ρ shows the sublinear temperature dependence (n < 1) in the wide temperature region above Tsc ρ=0 , and ρ0 decreases abruptly in the pressure region where Tsc ρ=0 indicates a maximum.

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“…Resembling that of CeCu 2 (Si,Ge) 2 [13], a scenario of two superconducting domes was proposed for CeIrIn 5 under combined chemical and physical pressures (Scenario II in Fig. 1) [14][15][16]. CeIrIn 5 was argued to exist far from an AFM QCP and be located at a cusp-like minimum of T sc which bridges the two superconducting domes [16].…”

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confidence: 99%

CeIrIn5: Superconductivity on a magnetic instability

et al. 2014

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We report the doping-induced antiferromagnetic state and Fermi liquid state that are connected by a superconducting region in a series of CeIrIn5−xHgx, CeIrIn5−xSnx and CeIr1−xPtxIn5 single crystals. Measurements of the specific heat C(T ) and electrical resistivity ρ(T ) demonstrate that hole doping via Hg/In substitution gives rise to an antiferromagnetic ground state, but substitutions of In by Sn or Ir by Pt (electron doping) favor a paramagnetic Fermi liquid state. A cone-like non-Fermi liquid region is observed near CeIrIn5, showing a diverging effective mass on the slightly Hg-doped side. The obtained temperature-doping phase diagram suggests that CeIrIn5 is in proximity to an antiferromagnetic quantum critical point, and heavy fermion superconductivity in this compound is mediated by magnetic quantum fluctuations rather than by valence fluctuations.

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Two superconducting phases inCeRh1−xIrxIn5

Cited by 81 publications

References 28 publications

Evolution of magnetism in Pd-substituted Ce2RhIn8 single crystals

Evolution of magnetism in Pd-substituted Ce2RhIn8 single crystals

Physical properties of Cd doped CeIrIn₅ under pressure

CeIrIn5: Superconductivity on a magnetic instability

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Two superconducting phases inCeRh1−xIrxIn5

Cited by 81 publications

References 28 publications

Evolution of magnetism in Pd-substituted Ce2RhIn8 single crystals

Evolution of magnetism in Pd-substituted Ce2RhIn8 single crystals

Physical properties of Cd doped CeIrIn5 under pressure

CeIrIn5: Superconductivity on a magnetic instability

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Product

Resources

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Physical properties of Cd doped CeIrIn₅ under pressure