Strain and vector magnetic field tuning of the anomalous phase in Sr
 3
 Ru
 2
 O
 7

Brodsky, Daniel; Barber, Mark E.; Bruin, J. A. N.; Borzi, R. A.; Grigera, S. A.; Perry, Robin; Mackenzie, A. P.; Hicks, Clifford W.

doi:10.1126/sciadv.1501804

Cited by 23 publications

(17 citation statements)

References 61 publications

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“…It incorporates a displacement sensor placed in parallel with the sample. As in previous reports [8,13], we estimate that ∼80% of the applied displacement is transferred to the central, exposed portion of the sample, with the rest going into deformation of the ends of the sample and the epoxy. In other words, the strains reported here are the applied displacement divided by the exposed length of the sample, multiplied by 0.8, and we estimate a ∼20% sample-tosample error on this strain determination.…”

Section: Methodssupporting

confidence: 73%

“…The association of weaker order with microscopic coexistence extends to other systems. The correlatedelectron material Sr 3 Ru 2 O 7 has a magnetically ordered phase with low-amplitude SDWs oriented along the (100) and (010) directions, which coexist microscopically [7,8]. In at least some iron-based superconductors, singlecomponent C 2 -symmetric magnetic order at low dopings gives way, as the order is suppressed through doping towards its quantum critical point, to two-component C 4symmetric order [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Effect of uniaxial stress on the magnetic phases of CeAuSb2

et al. 2018

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We present results of measurements of resistivity of CeAuSb2 under the combination of c-axis magnetic field and in-plane uniaxial stress. In unstressed CeAuSb2 there are two magnetic phases. The low-field A phase is a single-component spin-density wave (SDW), with q = (η, ±η, 1/2), and the high-field B phase consists of microscopically coexisting (η, η, 1/2) and (η, −η, 1/2) spin-density waves. Pressure along a 100 lattice direction is a transverse field to both of these phases, and so initially has little effect, however eventually induces new low-and high-field phases in which the principal axes of the SDW components appear to have rotated to the 100 directions. Under this strong 100 compression, the field evolution of the resistivity is much smoother than at zero strain: In zero strain, there is a strong first-order transition, while under strong 100 it becomes much broader. We hypothesize that this is a consequence of the uniaxial stress lifting the degeneracy between the (100) and (010) directions.

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Section: Methodssupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Effect of uniaxial stress on the magnetic phases of CeAuSb2

et al. 2018

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“…If the two components coexist microscopically over some strain range, strain ramps below T N should show two transitions, corresponding separately to the onset of one and the disappearance of the other component [15]. If they do not coexist, the ordered state lifts the (110)/(110) symmetry of the lattice, and a first-order transition, corresponding to reversal of the sign of the symmetry-breaking, is expected at ε 110 = 0.…”

Section: Results: 110 Pressurementioning

confidence: 99%

“…The V-shaped form of T N (ε 110 ) indicates two anisotropic order parameter components, with 110 principal axes, and the first-order transition across ε 110 shows that they do not co-exist microscopically. We note that Sr 3 Ru 2 O 7 provides an alternative example, of anisotropic order parameter components that do co-exist microscopically over a non-zero range of applied lattice orthorhombicity [15].…”

Section: Discussionmentioning

confidence: 99%

Effect of applied orthorhombic lattice distortion on the antiferromagnetic phase of CeAuSb2

et al. 2018

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We study the response of the antiferromagnetism of CeAuSb2 to orthorhombic lattice distortion applied through in-plane uniaxial pressure. The response to pressure applied along a 110 lattice direction shows a first-order transition at zero pressure, which shows that the magnetic order lifts the (110)/(110) symmetry of the unstressed lattice. Sufficient 100 pressure appears to rotate the principal axes of the order from 110 to 100 . At low 100 pressure, the transition at TN is weakly first-order, however it becomes continuous above a threshold 100 pressure. We discuss the possibility that this behavior is driven by order parameter fluctuations, with the restoration of a continuous transition a result of reducing the point-group symmetry of the lattice.

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“…2(b), using procedures described in Refs. [22,23,29,32,33]. After some slipping of the sample mounting epoxy during initial compression, all resistivity data repeated though multiple strain cycles, indicating that the sample remained within its elastic limit.…”

Section: Fig 3 (Color Online)mentioning

confidence: 99%

Resistivity in the Vicinity of a van Hove Singularity: Sr2RuO4 under Uniaxial Pressure

Barber¹,

Gibbs²,

Maeno³

et al. 2018

Phys. Rev. Lett.

106

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We report the results of a combined study of the normal-state resistivity and superconducting transition temperature T_{c} of the unconventional superconductor Sr_{2}RuO_{4} under uniaxial pressure. There is strong evidence that, as well as driving T_{c} through a maximum at ∼3.5 K, compressive strains ϵ of nearly 1% along the crystallographic [100] axis drive the γ Fermi surface sheet through a van Hove singularity, changing the temperature dependence of the resistivity from T^{2} above, and below the transition region to T^{1.5} within it. This occurs in extremely pure single-crystals in which the impurity contribution to the resistivity is <100 nΩ cm, so our study also highlights the potential of uniaxial pressure as a more general probe of this class of physics in clean systems.

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Strain and vector magnetic field tuning of the anomalous phase in Sr ₃ Ru ₂ O ₇

Abstract: The components of the field-induced order in Sr3Ru2O7 coexist microscopically, not, as has long been thought, in domains.

Cited by 23 publications

References 61 publications

Effect of uniaxial stress on the magnetic phases of CeAuSb2

Effect of uniaxial stress on the magnetic phases of CeAuSb2

Effect of applied orthorhombic lattice distortion on the antiferromagnetic phase of CeAuSb2

Resistivity in the Vicinity of a van Hove Singularity: Sr2RuO4 under Uniaxial Pressure

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Strain and vector magnetic field tuning of the anomalous phase in Sr 3 Ru 2 O 7

Abstract: The components of the field-induced order in Sr3Ru2O7 coexist microscopically, not, as has long been thought, in domains.

Cited by 23 publications

References 61 publications

Effect of uniaxial stress on the magnetic phases of CeAuSb2

Effect of uniaxial stress on the magnetic phases of CeAuSb2

Effect of applied orthorhombic lattice distortion on the antiferromagnetic phase of CeAuSb2

Resistivity in the Vicinity of a van Hove Singularity: Sr2RuO4 under Uniaxial Pressure

Contact Info

Product

Resources

About

Strain and vector magnetic field tuning of the anomalous phase in Sr ₃ Ru ₂ O ₇