Anomalous Properties around Magnetic Instability in Heavy Electron Systems

Moriya, Tôru; Takimoto, Tetsuya

doi:10.1143/jpsj.64.960

Cited by 713 publications

(692 citation statements)

References 18 publications

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“…The Cd doped CeCoIn5 shows the similar phase diagram as CeRhIn5. In the magnetic QCP regime, theoretical study revealed that electrical resistivity ρ shows the NFL behavior, ρ ∝T n (n = 1 ~ 1.5) [4], which is in good agreement with experimental results of CeCoIn5 [5].…”

Section: Introductionsupporting

confidence: 85%

Physical properties of Cd doped CeIrIn₅ under pressure

Tsunoda¹,

Hirose²,

Settai³

2017

Proc. 17th Int. Conf. On High Pressure in Semiconductor Physics &Amp; Workshop on High-Pressure Study on Superconducting

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We measured the electrical resistivity ρ of CeIr(In1-xCdx)5 under pressure for x = 0.05 and 0.10, which show the onset of superconductivity (SC) at Tsc onset ~ 0.9 K and antiferromagnetic transition at TN ~ 3.4 K. For x = 0.05, Tsc onset increases by applying pressure up to 2.8 GPa and zero resistivity is observed at Tsc ρ=0 above 2.4 GPa. For x = 0.10, the pressure dependence of TN shows peak at around 2 GPa and TN seems to be 0 K toward 3 GPa, where SC phase appears. The maximum value of Tsc ρ=0 is independent on amount of doped Cd, showing 1.35 K. We analyzed the temperature dependence of the electrical resistivity ρ for x = 0.05 and 0.10 under pressure using the following equation, ρ = ρ0 + AT n . This analysis revealed that ρ shows the sublinear temperature dependence (n < 1) in the wide temperature region above Tsc ρ=0 , and ρ0 decreases abruptly in the pressure region where Tsc ρ=0 indicates a maximum.

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Section: Introductionsupporting

confidence: 85%

Physical properties of Cd doped CeIrIn₅ under pressure

Tsunoda¹,

Hirose²,

Settai³

2017

Proc. 17th Int. Conf. On High Pressure in Semiconductor Physics &Amp; Workshop on High-Pressure Study on Superconducting

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“…While the quantum phase transition at x c in Ce x La 1−x Ru 2 Si 2 could be weakly first order, 62 the quantum critical behavior around x c is successfully discussed on the basis of conventional scenario of quantum critical point, mostly in terms of the self consistent renormalization (SCR) theory. 63,64 We will not go into the details of the discussions but refer the reader to the references. 17 When a magnetic field is applied along the [001] direction, metamagnetic transition takes place as observed in CeRu 2 Si 2 .…”

Section: Magnetic Phase Diagrams Of Cerumentioning

confidence: 99%

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

2014

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This article describes the Fermi surface properties of CeRu 2 Si 2 and its alloy systems CeRu 2 (Si x Ge 1−x ) 2 and Ce x La 1−x Ru 2 Si 2 studied by the de Haas -van Alphen (dHvA) effect. We pay particular attention to how the Fermi surface properties and the f electron state change with magnetic properties, in particular how they change associated with metamagnetic transition and quantum phase transition. After summarizing the

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“…The scaling behavior over four decades of the ratio of temperature T to magnetic field B Quantum critical phenomena in itinerant electron systems that do not follow the conventional spin-fluctuation theory [1][2][3][4] have attracted attention in condensed matter physics. 5) The heavy-electron metal β-YbAlB 4 has recently attracted great interest since the unconventional quantum criticality, such as the magnetic susceptibility χ ∼ T −0.5 , the electronic specific-heat coefficient C e /T ∼ − log T , and approximately T -linear resistivity, has been observed at low temperatures at least below 3 K down to a few hundred mK.…”

mentioning

confidence: 99%

“…respectively, where C 1σ and C 2σ are constants given by 2 , respectively. Note that in the zero-field case, h = 0, Eq.…”

mentioning

confidence: 99%

T/B Scaling in β-YbAlB₄

Watanabe

Miyake

2014

J. Phys. Soc. Jpn.

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The scaling behavior over four decades of the ratio of temperature T to magnetic field B observed in the magnetization in β-YbAlB 4 is theoretically examined. By developing a theoretical framework that exhibits the quantum critical phenomena of Yb-valence fluctuations under a magnetic field, we show that the T/B-scaling behavior can appear near the quan- Quantum critical phenomena in itinerant electron systems that do not follow the conventional spin-fluctuation theory [1][2][3][4] have attracted attention in condensed matter physics. 5) The heavy-electron metal β-YbAlB 4 has recently attracted great interest since the unconventional quantum criticality, such as the magnetic susceptibility χ ∼ T −0.5 , the electronic specific-heat coefficient C e /T ∼ − log T , and approximately T -linear resistivity, has been observed at low temperatures at least below 3 K down to a few hundred mK. 6,7) Interestingly, from the magnetization data for T < ∼ 3 K and the magnetic field B < ∼ 2 T, in β-YbAlB 4 it has been discovered that the magnetic susceptibility χ shows the following T/B scaling behavior over four decades of T/B:where µ B and k B are the Bohr magneton and Boltzmann constant, respectively, and ϕ is the function ϕ(x) = Λ(Γ 2 + x 2 ) 1/4 with Λ and Γ being constants. 7) Namely, χ −1 /(µ B B) 1/2 is expressed as a single scaling function of the ratio T/B.This striking behavior of Eq. (1) calls for theoretical explanation, and it has so far been proposed that anisotropic hybridization between f and conduction electrons is the key origin

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Anomalous Properties around Magnetic Instability in Heavy Electron Systems

Cited by 713 publications

References 18 publications

Physical properties of Cd doped CeIrIn₅ under pressure

Physical properties of Cd doped CeIrIn₅ under pressure

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

T/B Scaling in β-YbAlB₄

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Anomalous Properties around Magnetic Instability in Heavy Electron Systems

Cited by 713 publications

References 18 publications

Physical properties of Cd doped CeIrIn5 under pressure

Physical properties of Cd doped CeIrIn5 under pressure

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu2Si2 and Its Alloys Probed by the dHvA Effect

T/B Scaling in β-YbAlB4

Contact Info

Product

Resources

About

Physical properties of Cd doped CeIrIn₅ under pressure

Physical properties of Cd doped CeIrIn₅ under pressure

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

T/B Scaling in β-YbAlB₄