Neutron scattering studies on spin fluctuations in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>RuO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Jenni, K.; Kunkemöller, S.; Steffens, P.; Sidis, Y.; Bewley, Robert; Mao, Zhiqiang; Maeno, Y.; Braden, M.

doi:10.1103/physrevb.103.104511

Cited by 16 publications

(11 citation statements)

References 65 publications

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“…Here, ψ(1) is the destruction operator and T τ is the imaginary-time-ordering operator. Isoelectronic doping suggests that SRO lies in the vicinity of magnetic orderings [66], consistent with the important spin fluctuations found by neutron scattering [41,[67][68][69]. In addition, the well established correlated character of Ru t 2g electrons [70][71][72][73][74][75] makes SRO the archetypal representative of superconductivity mediated by spin and charge fluctuations.…”

supporting

confidence: 69%

Frequency-dependent Inter-pseudospin Solutions to Superconducting Strontium Ruthenate

Gingras¹,

Allaglo²,

Nourafkan³

et al. 2022

Preprint

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supporting

confidence: 69%

Frequency-dependent Inter-pseudospin Solutions to Superconducting Strontium Ruthenate

Gingras¹,

Allaglo²,

Nourafkan³

et al. 2022

Preprint

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“…It is featured with horizontal line nodes on the k z = 0 plane and is supposed to cause L modulated intensity of the spin resonance [72]. But this expected resonance peak at L = ±0.5 was not observed in latest neutron scattering experiment [73]. The d xz + id yz pairing was mostly supported by µSR measurements that reported the splitting of superconductivity and TRSB under uniaxial pressure opposed to hydrostatic pressure [42,43].…”

Section: Discussionmentioning

confidence: 99%

Superconducting Pairing Mechanism of Sr$_2$RuO$_4$

Sheng,

Li,

Yang

2021

Preprint

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Recent ultrasound experiments unveiled two-component nature of the superconducting order parameter in Sr2RuO4 and proposed dxz + idyz and the accidentally degenerate d x 2 −y 2 + ig as possible candidates. To clarify the true pairing symmetry, we construct a phenomenological model containing all symmetry-allowed multipole fluctuations as potential pairing glues and make a systematic survey of major pairing states within the Eliashberg framework. This allows us to exclude with certainty dxz + idyz based on the quasi-two-dimensionality of the Fermi surface topology and establish d x 2 −y 2 + ig as the most probable pairing state. The latter is found to arise from the interplay of antiferromagnetic, ferromagnetic, and electric multipole fluctuations and agree well with most current experiments. Our work provides a promising basis for understanding the pairing mechanism in superconducting Sr2RuO4.

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“…The q 1D vector that folds nicely the β band onto the α one is largest in the yz-zx orbitals sector. q 1D was experimentally characterized by various neutron scattering experiments [53][54][55][56]. The two other labelled peaks involve the large pockets of states of the γ band, with xy character.…”

Section: Spin and Charge Fluctuation Theorymentioning

confidence: 99%

Coexistence of Even- and Odd-Frequency Superconductivity in Correlated Multi-Orbital Systems with Spin-Orbit Coupling

Gingras,

Allaglo,

Nourafkan

et al. 2022

Preprint

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The symmetry of the superconducting order parameters in multi-orbital systems involves many quantum numbers. Pairing mediated by electronic correlations being retarded, the frequency structure of superconducting order parameters bears important information. Here we generalize the frequency-dependent theory of superconductivity mediated by spin and charge fluctuations to systems with spin-orbit coupling. This formulation is applied to strontium ruthenate with a normal state obtained using density functional theory. Taking advantage of pseudospin and inversion symmetries, the inter-pseudospin sector of the normal state Eliashberg equation is mapped to a pseudospin-diagonal one. We find ubiquitous entanglement of spin and orbital quantum numbers, along with notable mixing between even-and odd-frequency correlations. We present the phase diagrams for leading and subleading symmetries in the pseudospin-orbital basis of Sr2RuO4. They are characterized using SP OT contributions, group theory, phase distributions in the complex plane and temperature dependence.

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Neutron scattering studies on spin fluctuations in Sr2RuO4

Abstract: This is a copy of the published version, or version of record, available on the publisher's website. This version does not track changes, errata, or withdrawals on the publisher's site.

Cited by 16 publications

References 65 publications

Frequency-dependent Inter-pseudospin Solutions to Superconducting Strontium Ruthenate

Frequency-dependent Inter-pseudospin Solutions to Superconducting Strontium Ruthenate

Superconducting Pairing Mechanism of Sr$_2$RuO$_4$

Coexistence of Even- and Odd-Frequency Superconductivity in Correlated Multi-Orbital Systems with Spin-Orbit Coupling

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