Heavy fermion superconductivity: 5f vs 4f
نویسندگان
چکیده
منابع مشابه
Superconductivity in Heavy Fermion Compounds
The heavy electron state in intermetallic lanthanide and actinide compounds has its origin in the interplay of strong Coulomb repulsion in the 4fand 5fshells and their hybridisation with conduction band states. Heavy quasiparticles have mostly been observed in Ceand U-based intermetallics which are therefore at the focus of this review. Ideally the ground state in these strongly correlated elec...
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The apparently inimical relationship between magnetism and superconductivity has come under increasing scrutiny in a wide range of material classes, where the free energy landscape conspires to bring them in close proximity to each other. Particularly enigmatic is the case when these phases microscopically interpenetrate, though the manner in which this can be accomplished remains to be fully c...
متن کاملMagnetism and superconductivity of heavy fermion matter
The interplay of magnetism and unconventional superconductivity (d singlet wave or p triplet wave) in strongly correlated electronic system (SCES) is discussed with recent examples found in heavy fermion compounds. A short presentation is given on the formation of the heavy quasiparticle with the two sources of a local and intersite enhancement for the effective mass. Two cases of the coexisten...
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The filled skutterudite compound PrOs4Sb12 has been found to exhibit superconductivity with a critical temperature Tc = 1.85 K that develops out of a heavy Fermi liquid with an effective mass m ∗ ≈ 50 me. The current experimental situation regarding the heavy fermion state, the superconducting state, and a high field, low temperature phase that is apparently associated with magnetic or quadrupo...
متن کاملHeavy-fermion superconductivity in the quadrupole ordered state of PrV2Al20.
PrV2Al20 is a rare example of a heavy-fermion system based on strong hybridization between conduction electrons and nonmagnetic quadrupolar moments of the cubic Γ3 ground doublet. Here, we report that a high-quality single crystal of PrV2Al20 exhibits superconductivity at Tc=50 mK in the antiferroquadrupole-ordered state under ambient pressure. The heavy-fermion character of the superconductiv...
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ژورنال
عنوان ژورنال: Journal of the Korean Physical Society
سال: 2013
ISSN: 0374-4884,1976-8524
DOI: 10.3938/jkps.63.795