Heavy-non-Fermi-liquid behavior in U(Cu,Pd<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Andraka, B.; Stewart, G. R.

doi:10.1103/physrevb.47.3208

Cited by 182 publications

(136 citation statements)

References 2 publications

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“…In UCu 3.5 Pd 1.5 the Pd concentration x is closer to the value x ≈ 2 above which a spin-glass phase is observed [36], and the proximity of this phase may be reflected in the low-temperature increase of γ.…”

Section: Scaling Exponent: Temperature Dependencementioning

confidence: 96%

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Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems

MacLaughlin

Heffner

Bernal

et al. 2004

J. Phys.: Condens. Matter

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Abstract. Muon spin rotation and relaxation (µSR) experiments have yielded evidence that structural disorder is an important factor in many f-electron-based non-Fermi-liquid (NFL) systems. Disorder-driven mechanisms for NFL behaviour are suggested by the observed broad and strongly temperature-dependent µSR (and NMR) linewidths in several NFL compounds and alloys. Local disorderdriven theories (Kondo disorder, Griffiths-McCoy singularity) are, however, not capable of describing the time-field scaling seen in muon spin relaxation experiments, which suggest cooperative and critical spin fluctuations rather than a distribution of local fluctuation rates. A strong empirical correlation is established between electronic disorder and slow spin fluctuations in NFL materials.

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Section: Scaling Exponent: Temperature Dependencementioning

confidence: 96%

“…An example of such a comparison is given below for the NFL compound UCu 4 Pd. 4 Pd [35] Heavy-fermion materials in the series UCu 5−x Pd x , 1 x 1.5, exhibit NFL behaviour [36,37]. These alloys crystallize in the fcc AuBe 5 structure (space group F 43m).…”

Section: Nmr/tf-µsr Linewidth and Susceptibility Inhomogeneitymentioning

confidence: 99%

Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems

MacLaughlin

Heffner

Bernal

et al. 2004

J. Phys.: Condens. Matter

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show abstract

“…In the inset of Figure 4(b), C e /T is plotted on a semi-log scale to emphasize the logarithmic character of C e /T ∼ − ln T down to ∼5 K. This behavior is consistent with typical NFL behavior observed in many other systems. [39,40,41,42,43] …”

Section: Specific Heatmentioning

confidence: 99%

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Jang¹,

Bd²,

Ho³

et al. 2014

J. Phys.: Condens. Matter

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Abstract.A crossover from a non-Fermi liquid to a Fermi liquid phase in Yb 2 Ni 12 P 7 is observed by analyzing electrical resistivity ρ(T ), magnetic susceptibility χ(T ), specific heat C(T ), and thermoelectric power S(T ) measurements. The electronic contribution to specific heat, C e (T ), behaves as C e (T )/T ∼ − ln(T ) for 5 K < T < 15 K, which is consistent with non-Fermi liquid behavior. Below T ∼ 4 K, the upturn in C e (T )/T begins to saturate, suggesting that the system crosses over into a Fermi-liquid ground state. This is consistent with robust ρ(T )−ρ 0 = AT 2 behavior below T ∼ 4 K, with the power-law exponent becoming sub-quadratic for T > 4 K. A crossover between Fermiliquid and non-Fermi liquid behavior suggests that Yb 2 Ni 12 P 7 is in close proximity to a quantum critical point, in agreement with results from recent measurements of this compound under applied pressure.

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“…Examples of the former category are ͑U,Y͒Pd 3 compounds 4,5 and the ͑U,Th͒Ru 2 Si 2 system, 6 while Ce͑Cu,Au͒ 6 compounds 7 and U͑Cu,Pd͒ 5 representatives 8 fall in the latter category. Non-Fermi-liquid scaling has been proposed for some compositions in all of the above systems, though sometimes different mechanisms have been proposed for its occurrence.…”

Section: Introductionmentioning

confidence: 99%

Non-Fermi-liquid scaling in heavy-fermionUCu3.5Al1.5and
Nakotte
¹
,
Prokeš
²
,
Brück
³

et al. 1996
Phys. Rev. B
13
0
4
0
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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We report on specific-heat, magnetic-susceptibility, high-field-magnetization, electrical-resistivity, and neutron-diffraction results on UCu 3.5 Al 1.5 ͑polycrystal͒ and UCu 3 Al 2 ͑polycrystal and single crystal͒. Our results indicate that both compounds crystallize in the hexagonal CaCu 5 structure with ordered UCu 2 planes separated by planes containing a statistical distribution of Al along with the remaining Cu atoms. At low temperatures, the specific heat and the magnetic susceptibility of both compounds are enhanced, but their temperature dependences are found to be distinct from expectations of Fermi-liquid theory. UCu 3.5 Al 1.5 does not order magnetically, and the low-temperature specific heat and magnetic susceptibility show scaling behavior ͑C/Tϰln T and ϰT Ϫ1/3 ͒ reminiscent of non-Fermi-liquid materials. For UCu 3 Al 2 , on the other hand, the low-temperature scaling of bulk properties is masked by an anomaly around 8-10 K, which is presumably of magnetic origin. Single-crystal studies of UCu 3 Al 2 reveal a huge magnetic anisotropy with very different in-plane response compared to the c-axis response. Our data provide evidence that any temperature dependence of the magnetic susceptibility ͑and electrical resistivity͒ of polycrystalline material may be due to averaging anisotropic response over all crystallographic directions. The results are discussed in the context of findings from other non-Fermi-liquid materials. ͓S0163-1829͑96͒04641-3͔

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Heavy-non-Fermi-liquid behavior in U(Cu,Pd)5

Cited by 182 publications

References 2 publications

Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems

Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Non-Fermi-liquid scaling in heavy-fermionUCu3.5Al1.5and
Nakotte
¹
,
Prokeš
²
,
Brück
³

et al. 1996
Phys. Rev. B
13
0
4
0
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Heavy-non-Fermi-liquid behavior in U(Cu,Pd)5

Cited by 182 publications

References 2 publications

Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems

Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems

Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb2Ni12P7

Non-Fermi-liquid scaling in heavy-fermionUCu3.5Al1.5andNakotte1, Prokeš2, Brück3 et al. 1996Phys. Rev. B13040View full textAdd to dashboardCite

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Crossover between Fermi liquid and non-Fermi liquid behavior in the non-centrosymmetric compound Yb₂Ni₁₂P₇

Non-Fermi-liquid scaling in heavy-fermionUCu3.5Al1.5and
Nakotte
¹
,
Prokeš
²
,
Brück
³

et al. 1996
Phys. Rev. B
13
0
4
0
View full text Add to dashboard Cite