UPt3, heavy fermions and superconductivity

Visser, A. de; Menovsky, A.A.; Franse, J.J.M.

doi:10.1016/0378-4363(87)90008-8

Cited by 136 publications

(93 citation statements)

References 133 publications

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“…Neutron-diffraction experiments [8] carried out on a single-crystalline sample with optimal doping, U(Pt 0.95 Pd 0.05 ) 3 (T N,max = 5.8 K), confirmed the antiferromagnetic order. The ordered moment equals 0.6±0.2 µ B /U-atom and is directed along the a * -axis.…”

Section: Introductionmentioning

confidence: 77%

“…Evidence for the proximity to a magnetic instability is provided by pronounced spin-fluctuation phenomena at low temperatures [1] and incipient magnetic ordering [2], which can readily be made visible by chemical substitution. The lowtemperature thermal, magnetic and transport properties of pure UPt 3 demonstrate the formation of a strongly renormalized Fermi liquid at low temperatures [1][2][3]. The coefficient, γ= 0.42 J/molK 2 , of the linear term in the specific heat, c(T), is very much enhanced with respect to a normal metal, which gives rise to a Fermi-liquid description with a quasiparticle mass of ~200 times the free electron mass.…”

Section: Introductionmentioning

confidence: 95%

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Neutron-diffraction study of the evolution of antiferromagnetic order inUPt3doped with Pd

et al. 1999

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Section: Introductionmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 95%

Neutron-diffraction study of the evolution of antiferromagnetic order inUPt3doped with Pd

et al. 1999

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“…On the other hand, the electronic heat capacity coefficient 21) of   20 mJ/molK 2 , which reflects the effective mass of the electrons, is considerably lower than that those of UCoGe ( = 55 mJ/molK 2 ) and URhGe ( = 160 mJ/molK 2 ) 20) or archetypal uranium heavy-fermion compounds [24][25][26] . The low  is considered to be connected with the opening of a large AFM gap 21) .…”

Section: Introductionmentioning

confidence: 90%

Effect of Pressure on Magnetism of UIrGe

et al. 2017

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We report the effect of hydrostatic pressure on the electronic state of the antiferromagnet UIrGe, which is isostructural and isoelectronic with the ferromagnetic superconductors UCoGe and URhGe. A series of electrical resistivity measurements in a piston-cylinder-type cell and a cubic-anvil cell were performed at hydrostatic pressures up to 15 GPa. The Néel temperature decreases with increasing pressure. We constructed a p-T phase diagram and estimated the critical pressure pc, where the antiferromagnetism vanishes, as  12 GPa. The antiferromagnetic/paramagnetic transition appears to be first order. We suggest a scenario of competing antiferromagnetic inter-J-and ferromagnetic intra-J*-chain interactions in UIrGe. A moderate increase in the effective electron mass was detected in the vicinity of pc. A discussion of the electronic specific heat  and electron-electron correlation term A using the KadowakiWoods relation is given.

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“…They exhibit a high degree of anisotropy in most of their properties. Some of these systems, like, for example, UPt3, UPd2AI3, and CeCuSi2 will even exhibit unusual superconductivity at low temperatures [32][33][34][35][36]21] with a complicated phase diagram. In addition, HF systems exist which exhibit a gap very much like in semiconductors, e.g.…”

Section: Heavy Fermionsmentioning

confidence: 99%

Spin fluctuations and heavy fermion behavior

Wyder

1995

Physica B: Condensed Matter

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Spin fluctuations and heavy fermion behaviorWyder, U. 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. AbstractA heuristic approach to the relation of spin fluctuations (SF) and the heavy fermion (HF) state will be presented. The appearance of SF in the eigenstates of the periodic Anderson model is discussed in terms of relevant length scales, something already known for the Kondo problem but this time presented in a slightly more general framework. It will be shown that a specific form of SF can produce a HF-like state. The magnetic ordering, its small magnetic moment (using a Stoner-like criterion), charge transfer, and the magnetic field effect will be discussed.

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UPt3, heavy fermions and superconductivity

Cited by 136 publications

References 133 publications

Neutron-diffraction study of the evolution of antiferromagnetic order inUPt3doped with Pd

Neutron-diffraction study of the evolution of antiferromagnetic order inUPt3doped with Pd

Effect of Pressure on Magnetism of UIrGe

Spin fluctuations and heavy fermion behavior

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