Expansivity of the superconducting phases of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">UPt</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Dijk, N.H. van; Visser, A. de; Franse, J.J.M.; Holtmeier, S.; Taillefer, Louis; Flouquet, J.

doi:10.1103/physrevb.48.1299

Cited by 33 publications

(16 citation statements)

References 17 publications

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“…This is observed experimentally. [43] On the other hand, the N (normal state) -C boundary (upper part of the H c2 curve) is not very sensitive to pressure. Again, the agreement between theory and experiment is very satisfactory.…”

Section: Pressure Effectsmentioning

confidence: 99%

E1gmodel of superconductingUPt3
Park
¹
,
Joynt
²

1996
Phys. Rev. B
23
2
33
0
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The phase diagram of superconducting UPt 3 is explained in a GinzburgLandau theory starting from the hypothesis that the order parameter is a pseudo-spin singlet which transforms according to the E 1g representation of the D 6h point group. We show how to compute the positions of the phase boundaries both when the applied field is in the basal plane and when it is along the c-axis. The experimental phase diagrams as determined by longitudinal sound velocity data can be fit using a single set of parameters. In particular the crossing of the upper critical field curves for the two field directions and the apparent isotropy of the phase diagram are reproduced. The former is a result of the magnetic properties of UPt 3 and their contribution to the free energy in the superconducting state. The latter is a consequence of an approximate particle-hole symmetry. Finally we extend the theory to finite pressure and show that, in contrast to other models, the E 1g model explains the observed pressure dependence of the phase boundaries.

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Section: Pressure Effectsmentioning

confidence: 99%

E1gmodel of superconductingUPt3
Park
¹
,
Joynt
²

1996
Phys. Rev. B
23
2
33
0
View full text Add to dashboard Cite

show abstract

“…For instance, the magnetostriction, thermal expansion and ultrasonic attenuation have played an important role in the studies on the heavy fermion superconductors. 60,61) In summary, we have examined the possibilities of multiple phase diagram under the parallel magnetic field and suggested some future experiments. We hope that the pairing state in Na x CoO 2 · yH 2 O will be resolved by future experiments on the multiple phase transition.…”

Section: )mentioning

confidence: 99%

Role of Spin–Orbit Coupling on the Spin Triplet Pairing in Na_xCoO₂·yH₂O II: Multiple Phase Diagram under the Magnetic Field

2005

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The possibility of multiple phase diagram in the novel superconductor NaxCoO2 · yH2O is analyzed on the basis of the multi-orbital Hubbard model including the atomic spin-orbit coupling. We have shown that the spin triplet pairing state is stable in this model. The p-wave (f -wave) state is stabilized when the Hund's rule coupling is large (small). In the precedent paper, we have determined the direction of d-vector at T = Tc and H = 0 within the linearized Dyson-Gorkov equation. In this paper, the pairing state below Tc and under the magnetic field is determined within the weak coupling approximation including the paramagnetic effect. We find that the p+f coexistent state is stabilized at low temperatures in a part of parameter range. We point out that the phase diagram in the H-T plane is quite different between the p-wave, f -wave and p + f -wave superconductivities. The characteristics of each phase are clarified by showing the magnetic susceptibility and specific heat. We discuss the comparison with experimental results and suggest some future experiments to detect the multiple phase transition.

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“…The strongest basis for this belief is the phase diagram which displays multiple superconducting phases [3][4][5][6][7][8], just as liquid 3 He has multiple superfluid phases. In this paper we shall study surface superconductivity in UPt 3 , and see if competing models make differing predictions which might be experimentally tested.…”

Section: Introductionmentioning

confidence: 99%

Surface superconductivity andH c3 in UPt3

Chen

Garg

1996

Czech J Phys

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Surface superconductivity is studied within Ginzburg-Landau theory for two classes of models for the order parameter of UPt 3 . The first class assumes two independent one-dimensional order parameters (AB models), while the second assumes a single two-dimensional order parameter (E models). H c3 is calculated for all cases where the surface normal and magnetic field lie along high symmetry directions. Assuming specular reflection, it is found that except when H ĉ, the ratio H c3 /H c2 is either unity or equals its 'swave' value 1.695, although the precise H c3 vs. T curve predicted by the AB and E models differs for various geometries. The results are compared with recent experiments, and predictions are made for future experiments.

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Expansivity of the superconducting phases ofUPt3

Cited by 33 publications

References 17 publications

E1gmodel of superconductingUPt3
Park
¹
,
Joynt
²

1996
Phys. Rev. B
23
2
33
0
View full text Add to dashboard Cite

E1gmodel of superconductingUPt3
Park
¹
,
Joynt
²

1996
Phys. Rev. B
23
2
33
0
View full text Add to dashboard Cite

Role of Spin–Orbit Coupling on the Spin Triplet Pairing in Na_xCoO₂·yH₂O II: Multiple Phase Diagram under the Magnetic Field

Surface superconductivity andH c3 in UPt3

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Expansivity of the superconducting phases ofUPt3

Cited by 33 publications

References 17 publications

E1gmodel of superconductingUPt3Park1, Joynt2 1996Phys. Rev. B232330View full textAdd to dashboardCite

E1gmodel of superconductingUPt3Park1, Joynt2 1996Phys. Rev. B232330View full textAdd to dashboardCite

Role of Spin–Orbit Coupling on the Spin Triplet Pairing in NaxCoO2·yH2O II: Multiple Phase Diagram under the Magnetic Field

Surface superconductivity andH c3 in UPt3

Contact Info

Product

Resources

About

E1gmodel of superconductingUPt3
Park
¹
,
Joynt
²

1996
Phys. Rev. B
23
2
33
0
View full text Add to dashboard Cite

E1gmodel of superconductingUPt3
Park
¹
,
Joynt
²

1996
Phys. Rev. B
23
2
33
0
View full text Add to dashboard Cite

Role of Spin–Orbit Coupling on the Spin Triplet Pairing in Na_xCoO₂·yH₂O II: Multiple Phase Diagram under the Magnetic Field