Long-range magnetic order in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>CeRu</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>Al</mml:mtext></mml:mrow><mml:mrow><mml:mn>10</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>studied via muon spin relaxation and neutron diffraction

Khalyavin, D. D.; Hillier, A. D.; Adroja, D. T.; Strydom, A. M.; Manuel, Pascal; Chapon, L. C.; Peratheepan, P.; Knight, Kevin S.; Deen, P. P.; Ritter, C.; Muro, Yuji; Takabatake, Toshiro

doi:10.1103/physrevb.82.100405

Cited by 154 publications

(163 citation statements)

References 14 publications

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“…We insisted that the transition temperature T 0 ∼27 K is too high compared to an expected value of 0.2 K evaluated from the Néel temperature GdRu 2 Al 10 by the de Gennes' law, and the origin is not magnetic but electrical one. After that, a neutron diffraction experiment using polycrystalline powder sample revealed that the transition is attributed to an antiferromgnetic order, and the Ce moment along the c-axis with a moment of 0.3µ B /Ce at 2 K [4]. This was confirmed by our neutron diffraction study using a single crystal, though the value of ordered moment is somewhat larger value of 0.42 µ B /Ce [5].…”

Section: Introductionsupporting

confidence: 73%

Magnetic Properties of New Dilute Rare Earth Compounds R₂Ru₃Al₁₅

Yokota¹,

Nishioka²,

Kitagawa³

et al. 2014

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)

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Orthorhombic YbFe 2 Al 10 -type Kondo semiconductor CeT 2 Al 10 (T = Ru and Os) have anomalous high phase transition temperatures in spite of small Ce content. We have succeeded to synthesize new dilute rare earth hexagonal compounds Ce 2 Ru 3 Al 15 -type R 2 Ru 3 Al 15 (R = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er and Tm) closely related to YbFe 2 Al 10 -type structure, and investigated their transport and magnetic properties. The electrical resistivity measurements indicate that all the compounds are metal, and R = Ce shows a logarithmic increase below 20 K due to Kondo effect. R = Ce, Nd, Sm, Gd, Tb, Dy, Ho and Er show antiferromagnetic transitions at T N = 3.5, 2.7, 9.2, 19.0, 15.7, 7.85, 3.0 and 1.6 K, respectively, and the T N almost follows the de Gennes' law except for R = Ce and Sm. R = Pr has nonmagnetic ground state and R = Tm is expected to order magnetically below 1.2 K from the susceptibility measurement. We have found that the Néel temperature of R = Ce is about 20 times larger than an expected value by the de Gennes' law, indicating that Ce 2 Ru 3 Al 15 is also a member of high magnetic transition temperature materials.

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Section: Introductionsupporting

confidence: 73%

Magnetic Properties of New Dilute Rare Earth Compounds R₂Ru₃Al₁₅

Yokota¹,

Nishioka²,

Kitagawa³

et al. 2014

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)

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“…12 Such magnetic structure is indeed realized in the zigzag chain structure of CeRu 2 Al 10 and related materials. 40 We also look at the staggered magnetic quadrupole order in the multilayer high-T c cuprate superconductors, where the antiferromagnetic moment with Q = (π, π) changes the sign between the layers. 41 As we discussed in this paper, the "antiferro" order of the local electric quadrupole in the unit cell induces the EO order, and it may be realized in Sr 3 Ru 2 O 7 .…”

Section: Summary and Discussionmentioning

confidence: 99%

Electric Octupole Order in Bilayer Ruthenate Sr₃Ru₂O₇

Hitomi

Yanase

2014

J. Phys. Soc. Jpn.

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Although the odd-parity multipole order barely occurs in crystals with high symmetry, it can be formed in locally noncentrosymmetric crystals. We illustrate the odd-parity electric octupole order generated in a bilayer structure. When the local electric quadrupole is alternatively stacked between layers, it is regarded as an electric octupole order from the viewpoint of symmetry. We show that the p y s x + p x s y spin nematic order is induced by the spin-orbit coupling in the electric octupole state, and it results from the spontaneous inversion symmetry breaking leading to the D 2d point group symmetry. We investigate the possible realization of the electric octupole order in the bilayer ruthenate Sr 3 Ru 2 O 7 , assuming a local electric quadrupole arising from the Pomeranchuk instability and/or the orbital order. Effects of the lattice distortion and magnetic field are also clarified, and the nature of the "electronic nematic state" of Sr 3 Ru 2 O 7 is discussed. It is proposed that the asymmetric band structure is a signature of the electric octupole order in Sr 3 Ru 2 O 7 . The odd-parity multipole order in other strongly correlated electron systems is discussed.

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“…The magnetic moments in CeT 2 Al 10 order along the c axis with the propagation vector q = (0, 1, 0). [12][13][14] In isostructural NdFe 2 Al 10 and SmRu 2 Al 10 , on the other hand, the magnetic structure is described by q = (0, 3/4, 0) and its third harmonic of (0, 1/4, 0), reflecting the squaring up. 15,16) The high-temperature phase of SmRu 2 Al 10 is an incommensurate phase with q = (0, 0.759, 0).…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Cycloidal Magnetic Structure in GdRu₂Al₁₀ Studied by Resonant X-ray Diffraction

et al. 2017

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We have performed resonant X-ray diffraction experiments on the antiferromagnet GdRu2Al10 and have clarified that the magnetic structure in the ordered state is cycloidal with the moments lying in the bc plane and propagating along the b axis. The propagation vector shows a similar temperature dependence to the magnetic order parameter, which can be interpreted as being associated with the gap opening in the conduction band and the resultant change in the magnetic exchange interaction. Although the S = 7/2 state of Gd is almost isotropic, the moments show slight preferential ordering along the b axis. The c axis component in the cycloid develops with decreasing temperature through a tiny transition in the ordered phase. We also show that the scattering involves the σ-σ ′ process, which is forbidden in normal E1-E1 resonance of magnetic dipole origin. We discuss the possibility of the E1-E2 resonance originating from a toroidal moment due to the lack of inversion symmetry at the Gd site. The spin-flop transition in a magnetic field is also described in detail.

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Long-range magnetic order inCeRu2Al10studied via muon spin relaxation and neutron diffraction

Cited by 154 publications

References 14 publications

Magnetic Properties of New Dilute Rare Earth Compounds R₂Ru₃Al₁₅

Magnetic Properties of New Dilute Rare Earth Compounds R₂Ru₃Al₁₅

Electric Octupole Order in Bilayer Ruthenate Sr₃Ru₂O₇

Temperature-Dependent Cycloidal Magnetic Structure in GdRu₂Al₁₀ Studied by Resonant X-ray Diffraction

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Long-range magnetic order inCeRu2Al10studied via muon spin relaxation and neutron diffraction

Cited by 154 publications

References 14 publications

Magnetic Properties of New Dilute Rare Earth Compounds R2Ru3Al15

Magnetic Properties of New Dilute Rare Earth Compounds R2Ru3Al15

Electric Octupole Order in Bilayer Ruthenate Sr3Ru2O7

Temperature-Dependent Cycloidal Magnetic Structure in GdRu2Al10 Studied by Resonant X-ray Diffraction

Contact Info

Product

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About

Magnetic Properties of New Dilute Rare Earth Compounds R₂Ru₃Al₁₅

Magnetic Properties of New Dilute Rare Earth Compounds R₂Ru₃Al₁₅

Electric Octupole Order in Bilayer Ruthenate Sr₃Ru₂O₇

Temperature-Dependent Cycloidal Magnetic Structure in GdRu₂Al₁₀ Studied by Resonant X-ray Diffraction