Theory of elastic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">RuO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>at the superconducting transition temperature

Walker, Michael; Contreras, Pedro

doi:10.1103/physrevb.66.214508

Cited by 25 publications

(32 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this context we can also recall a well-known property that, if the eigenvalues are degenerate (e.g. for p + ip-pairing), T SC c can be enhanced by the strain effect 38 . From these, the present result may also be viewed as a possibility for this kind of T SC c enhancement revealed even for the (non-degenerate) d-wave regime in the 2D square lattice Hubbard model.…”

Section: B Superconductivity Under Fermi Surface Distortionsmentioning

confidence: 98%

Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model

2017

View full text Add to dashboard Cite

Interplay of Pomeranchuk instability (spontaneous symmetry breaking of the Fermi surface) and dwave superconductivity is studied for the repulsive Hubbard model on the square lattice with the dynamical mean field theory combined with the fluctuation exchange approximation (FLEX+DMFT). We show that the four-fold symmetric Fermi surface becomes unstable against a spontaneous distortion into two-fold near the van Hove filling, where the symmetry of superconductivity coexisting with the Pomeranchuk-distorted Fermi surface is modified from the d-wave pairing to (d + s)-wave. By systematically shifting the position of van Hove filling with varied second-and third-neighbor hoppings, we find that the transition temperature T PI c for the Pomeranchuk instability is more sensitively affected by the position of van Hove filling than the superconducting T SC c . This implies that the filling region for strong Pomeranchuk instability and that for the T SC c dome can be separated, and that Pomeranchuk instability can appear even if the peak of T PI c is lower than the peak of T SC c . An interesting finding is that the Fermi surface distortion can enhance the superconducting T SC c in the overdoped regime, which is explained with a perturbational picture for small distortions.

show abstract

Section: B Superconductivity Under Fermi Surface Distortionsmentioning

confidence: 98%

Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model

2017

View full text Add to dashboard Cite

show abstract

“…3 and 4 for reviews of the properties of Sr 2 RuO 4 .) There is currently a reasonable consensus that in Sr 2 RuO 4 the Cooper pairs form in a spin-triplet state which breaks time reversal symmetry, [5][6][7] and that the broken time-reversal symmetry results from a two-component order parameter of E u symmetry.…”

Section: Introductionmentioning

confidence: 99%

Determining the superconducting gap structure inSr2RuO4from sound attenuation studies belowTc

2004

Self Cite

View full text Add to dashboard Cite

This work presents a quantitative theoretical study of the sound attenuation in the unconventional multiband superconductor Sr 2 RuO 4 below the superconducting transition temperature T c . Sound attenuation in this material is shown to have the remarkable property of being able to identify different nodal structures on different bands. The nodal structures on the ␥ band on the one hand, and on the ␣ and ␤ bands on the other, are both found to be characterized by the existence of point nodes, but are significantly different in their quantitative aspects.

show abstract

“…42 The Gibbs free energy F GL and the coupling energy F couple between the crystal lattice deforma-tion and the SC order parameter are described as follows:…”

Section: Discussionmentioning

confidence: 99%

Higher-T_c Superconducting Phase in Sr₂RuO₄ Induced by In-Plane Uniaxial Pressure

et al. 2015

View full text Add to dashboard Cite

We revealed that the superconducting transition temperature T c of the multi-component superconductor Sr 2 RuO 4 is enhanced to 3.3 K under in-plane uniaxial pressure that reduces the tetragonal crystal symmetry. This result suggests that new superconducting phases with a one-component order parameter are induced. We have also clarified the inplane pressure direction dependence of the emergence of this higher-T c superconducting phase: pressure along the [100] direction is more favorable than pressure along the [110] direction. This result is probably closely related to the direct shortening of the in-plane Ru-O bond length along the pressure direction and the approach of the γ Fermi surface to the van Hove singularity under P [100] .

show abstract

Theory of elastic properties ofSr2RuO4at the superconducting transition temperature

Cited by 25 publications

References 20 publications

Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model

Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model

Determining the superconducting gap structure inSr2RuO4from sound attenuation studies belowTc

Higher-T_c Superconducting Phase in Sr₂RuO₄ Induced by In-Plane Uniaxial Pressure

Contact Info

Product

Resources

About

Theory of elastic properties ofSr2RuO4at the superconducting transition temperature

Cited by 25 publications

References 20 publications

Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model

Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model

Determining the superconducting gap structure inSr2RuO4from sound attenuation studies belowTc

Higher-Tc Superconducting Phase in Sr2RuO4 Induced by In-Plane Uniaxial Pressure

Contact Info

Product

Resources

About

Higher-T_c Superconducting Phase in Sr₂RuO₄ Induced by In-Plane Uniaxial Pressure