Unusual ground-state properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">UPd</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>: Implications for the

Caspary, R.; Hellmann, P.; Keller, Melanie; Sparn, G.; Wassilew, C.; Köhler, R.; Geibel, C.; Schank, C.; Steglich, F.; Phillips, N. E.

doi:10.1103/physrevlett.71.2146

Cited by 149 publications

(108 citation statements)

References 30 publications

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“…This is in accordance with the antiferromagnetic order of localized type [16,17,53], implying that in UPd Al and U Zn the magnetic ground state develops by interactions other than electron-electron interactions related to the Fermi surface [11]. Transport and specific heat measurement [53] and a recent photoemission investigation on UPd Al [54] suggest the coexistence of two subsystems with more localized 5f states responsible for the magnetic properties and less localized states responsible for the formation of heavy electrons and then for the superconducting properties. UPd Al and U Zn are fundamentally different from UCu and URu Si , where the opening of a SDW-like gap and the increase of (T) just below T , is indicative of an antiferromagnetic order invoking itinerant quasiparticles [29].…”

Section: Discussionsupporting

confidence: 61%

The electrodynamic response of heavy-electron materials with magnetic phase transitions

et al. 1997

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Section: Discussionsupporting

confidence: 61%

The electrodynamic response of heavy-electron materials with magnetic phase transitions

et al. 1997

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“…In UPd 2 Al 3 , the coexistence of the AFM order with the superconductivity has been established by various measurements [37,39,40,41]. The Al-and Pd-NQR results showed that 1/T 1 decreases rapidly due to an opening gap at a part of the Fermi surface below T N and follows the 1/T 1 ∝ T 3 below T c , consistent with the line-node gap.…”

Section: The Af and Sc Phase Diagram In Cecu2si2supporting

confidence: 61%

Coexistence of antiferromagnetism and superconductivity in heavy-fermion systems

Kitaoka

Kawasaki

Mito

et al. 2002

Journal of Physics and Chemistry of Solids

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We report the novel pressure(P )−temperature(T ) phase diagrams of antiferromagnetism (AF) and superconductivity (SC) in CeRhIn5, CeIn3 and CeCu2Si2 revealed by the NQR measurement. In the itinerant helical magnet CeRhIn5, we found that the Néel temperature TN is reduced at P ≥ 1.23 GPa with an emergent pseudogap behavior. The coexistence of AF and SC is found in a narrow P range of 1.63 − 1.75 GPa, followed by the onset of SC with line-node gap over a wide P window 2.1 − 5 GPa. In CeIn3, the localized magnetic character is robust against the application of pressure up to P ∼ 1.9 GPa, beyond which the system evolves into an itinerant regime in which the resistive superconducting phase emerges. We discuss the relationship between the phase diagram and the magnetic fluctuations. In CeCu2Si2, the SC and AF coexist on a microscopic level once its lattice parameter is expanded. We remark that the underlying marginal antiferromagnetic state is due to collective magnetic excitations in the superconducting state in CeCu2Si2. An interplay between AF and SC is discussed on the SO(5) scenario that unifies AF and SC. We suggest that the SC and AF in CeCu2Si2 have a common mechanism.

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“…The large anisotropy allows for a separate treatment of the two interactions: J*-d in the basal plane and Jz between the planes [3]. This analysis is similar to the proposed two nearly separate subsystems of (hybridized) 5f-quasiparticle states in UPd2A13 [9]. The presented thermal expansion experiments have provided new evidence for the crystal-field scheme of CePd2AI 3.…”

Section: Ap(h) = P(h)-p(o)supporting

confidence: 59%

Thermal expansion and magnetostriction of heavy-fermion CePd2Al3

Mentink

Nieuwenhuys

Mydosh

et al. 1995

Physica B: Condensed Matter

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Thermal expansion and magnetostriction of heavy-fermion CePd2Al3Mentink, S.A.M.; Nieuwenhuys, G.J.; Mydosh, J.A.; Nolten, A.J.; Menovsky, A.A.; de Visser, A. 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. Physica B 206 & 207 (1995) We present low-temperature thermal expansion, magnetostriction and magnetoresistivity measurements on a single crystal of CePdEA13. The strong anisotropy of a(T) confirms our earlier proposed anisotropic hybridization model for CePd2Al 3. The effective Griineisen parameter reaches 20 at 2 K, Upon application of magnetic fields along the a-axis, the thermal expansion rapidly becomes negative due to the quenching of the Kondo effect. Download date: 12 May 2018 ELSEVIER

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Unusual ground-state properties ofUPd2Al3: Implications for the

Cited by 149 publications

References 30 publications

The electrodynamic response of heavy-electron materials with magnetic phase transitions

The electrodynamic response of heavy-electron materials with magnetic phase transitions

Coexistence of antiferromagnetism and superconductivity in heavy-fermion systems

Thermal expansion and magnetostriction of heavy-fermion CePd2Al3

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