Since the discovery by Steglich et al.(1979) of superconductivity in the high-effective-mass
(∼ 200 me) electrons in Ce Cu 2 Si 2, the search for and characterization of such" heavy …

This article is a review of recent developments in the phenomenological description of
unconventional superconductivity. Starting with the BCS theory of superconductivity with …

A relatively new class of materials has been found in which the basic assumption of Landau
Fermi-liquid theory—that at low energies the electrons in a metal should behave essentially …

In a conventional superconductor, the binding of electrons into the paired states that
collectively carry the supercurrent is mediated by phonons—vibrations of the crystal lattice …

The absence of simple examples of superconductivity adjoining itinerant-electron
ferromagnetism in the phase diagram has for many years cast doubt on the validity of …

Quantum criticality describes the collective fluctuations of matter undergoing a second-order
phase transition at zero temperature. Heavy-fermion metals have in recent years emerged …

It is observed that the ratio, A/γ 2, has a common value of 1.0× 10− 5 μωcm (mole K/mJ) 2 for
all of the heavy Fermion compounds, where A is the coefficient of the quadratic term in the …

The intermetallic compound U Ru 2 Si 2 can be classified as a heavy-fermion system
because of its large linear specific-heat coefficient γ= 180 mJ/mol· K 2. Susceptibility …

Intermetallic compounds containing f-electron elements display a wealth of superconducting
phases, which are prime candidates for unconventional pairing with complex order …

Convincing evidence has been discovered for bulk superconductivity in UPt 3 at 0.54 K
based on specific-heat, resistance, and ac susceptibility measurements. In addition, new …