Scaling in heavy-fermion systems

Thompson, J. D.; Lawrence, J. M.; Fisk, Z.

doi:10.1007/bf00754923

Cited by 21 publications

(13 citation statements)

References 27 publications

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“…Therefore, the pressure dependence of T and T allows the determination of the Grüneisen parameter ⌫. 44 Both T and T increase with pressure in a similar fashion as shown in the inset of Fig. 8.…”

Section: C(t) and (T) Is Plotted In The Inset Ofsupporting

confidence: 63%

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Pressure-induced magnetic instability inCe2Rh3Ge5
Umeo
¹
,
Takabatake
²
,
Suzuki
³

et al. 2001
Phys. Rev. B
16
1
3
0
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A pressure-induced magnetic-nonmagnetic transition in an antiferromagnet Ce 2 Rh 3 Ge 5 has been investigated by the measurements of the resistivity , magnetic susceptibility , and specific heat on a single crystal down to 0.3 K. With increasing pressure, the Néel temperature T N is suppressed and disappears at P c ϭ0.45 GPa. For PϾ P c , the deviation from the Fermi-liquid behavior is observed in both (T) and (T): (T)ϭ 0 ϩAT n (nХ1.45) and (T)ϭ 0 ϪDT m (mХ0.27). Even for PϾ3 P c both n and m hardly change, i.e., no recovery of the Fermi-liquid state. This fact is in contrast with the recovery in many of Ce-based antiferromagnets at PϾ2 P c . The magnetization hardly decreases with pressure up to 1.2 GPa, suggesting that the cerium local moments still remain even far from the quantum critical point. Moreover, the Kondo temperature T K increases weakly from 10 K at Pϭ0 to 13 K at Pϭ0.57 GPa. These findings indicate the important role of short-range magnetic correlations in the revised Doniach phase diagram.

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Section: C(t) and (T) Is Plotted In The Inset Ofsupporting

confidence: 63%

“…Instead, at Pϭ0. 44 GPaХ P c , a broad maximum appears at around 3 K, which shifts to higher temperature for Pϭ0.57 GPa. The maximum might be due to the development of a short-range magnetic correlation as mentioned above.…”

Section: Resultsmentioning

confidence: 93%

Pressure-induced magnetic instability inCe2Rh3Ge5
Umeo
¹
,
Takabatake
²
,
Suzuki
³

et al. 2001
Phys. Rev. B
16
1
3
0
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“…In the heavy-fermion systems, early attempts to scale physical properties using a single energy scaling parameter met with only limited success. 24 However, in the cuprates it has been demonstrated 25-27 that a singleparameter scaling of experimental data was possible by using the energy scale of the pseudogap alone. By normalizing any measured electrical or thermal transport quantity f͑x͒ along with its variable x by the corresponding values at the onset of the pseudogap ͓f͑x ‫ء‬ ͒ and ͑x ‫ء‬ ͒, respectively͔ the measured data could be made to collapse into a single universal curve.…”

Section: Resultsmentioning

confidence: 99%

Precursor state to superconductivity inCeIrIn5: Unusual scaling of magnetotransport

et al. 2009

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We present an analysis of the normal-state Hall effect and magnetoresistance in the heavy-fermion superconductor CeIrIn 5 . It is demonstrated that the modified Kohler's scaling-which relates the magnetoresistance to the Hall angle-breaks down prior to the onset of superconductivity due to the presence of a precursor state to superconductivity in this system. A model-independent single-parameter scaling of the Hall angle governed solely by this precursor state is observed. Neither the Hall coefficient nor the resistivity exhibits this scaling, implying that this precursor state preferentially influences the Hall channel.

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“…At this point it could be interesting to verify whether physical properties of U(Ru 0.92 Rh 0.08 ) 2 Si 2 exhibit universal scalings that are found in many heavy-fermion systems [41][42][43][44]. The idea is that in the low-temperature limit the magnetic susceptibility, the specific heat, and the electrical resistivity are governed by a single energy scale because they are dominated by the same heavy-fermion states.…”

Section: Discussionmentioning

confidence: 99%

Electronic properties of a heavy-fermion U(Ru0.92Rh0.08)2Si2 single cr

et al. 2017

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We report the crystal structure and highly anisotropic magnetic, transport, and thermal properties of an exceptionally good single crystal of U(Ru 0.92 Rh 0.08 ) 2 Si 2 , prepared using a modified Czochralski method. Our study, that also includes neutron diffraction results, shows all the heavy-fermion signatures of pristine URu 2 Si 2 ; however, the superconductivity, hidden order, and remnant weak antiferromagnetic orders are absent. Instead, the ground state of the doped system can be classified as a spin liquid that preserves the heavy-fermion character. U(Ru 0.92 Rh 0.08 ) 2 Si 2 exhibits a short-range magnetic order distinguished by reflections of a Lorentzian profile at q III = ( ) positions that disappear above ∼15 K. The short-range order seems to be a precursor of a long-range magnetic order that occurs with higher Rh concentration. We indicate that these short-range fluctuations involve, at least partially, inelastic scattering processes.

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Scaling in heavy-fermion systems

Cited by 21 publications

References 27 publications

Pressure-induced magnetic instability inCe2Rh3Ge5
Umeo
¹
,
Takabatake
²
,
Suzuki
³

et al. 2001
Phys. Rev. B
16
1
3
0
View full text Add to dashboard Cite

Pressure-induced magnetic instability inCe2Rh3Ge5
Umeo
¹
,
Takabatake
²
,
Suzuki
³

et al. 2001
Phys. Rev. B
16
1
3
0
View full text Add to dashboard Cite

Precursor state to superconductivity inCeIrIn5: Unusual scaling of magnetotransport

Electronic properties of a heavy-fermion U(Ru0.92Rh0.08)2Si2 single cr

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Scaling in heavy-fermion systems

Cited by 21 publications

References 27 publications

Pressure-induced magnetic instability inCe2Rh3Ge5Umeo1, Takabatake2, Suzuki3 et al. 2001Phys. Rev. B16130View full textAdd to dashboardCite

Pressure-induced magnetic instability inCe2Rh3Ge5Umeo1, Takabatake2, Suzuki3 et al. 2001Phys. Rev. B16130View full textAdd to dashboardCite

Precursor state to superconductivity inCeIrIn5: Unusual scaling of magnetotransport

Electronic properties of a heavy-fermion U(Ru0.92Rh0.08)2Si2 single cr

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Pressure-induced magnetic instability inCe2Rh3Ge5
Umeo
¹
,
Takabatake
²
,
Suzuki
³

et al. 2001
Phys. Rev. B
16
1
3
0
View full text Add to dashboard Cite

Pressure-induced magnetic instability inCe2Rh3Ge5
Umeo
¹
,
Takabatake
²
,
Suzuki
³

et al. 2001
Phys. Rev. B
16
1
3
0
View full text Add to dashboard Cite