Muon spin rotation studies of unconventional superconductors: Fullerides, cuprates and heavy fermion systems
- Los Alamos National Lab., NM (United States)
In 1957 the Bardeen-Cooper-Schrieffer (BCS) theory successfully provided a microscopic explanation of superconductivity in simple metals based on an electron-phonon interaction which produces a pairing force between electrons in a relative zero-orbital-angular-momentum, spin-singlet state. Since that time new classes of superconductors have been discovered exhibiting higher angular momentum pairing states, together with new pairing interactions. This talk will examine the role that muon spin rotation ({mu}SR) has played in elucidating some of the unconventional properties of these superconductors. I will begin with an introduction to the superconductors order parameter and pairing mechanism and then discuss the parameters characterizing the superconducting state, such as the coherence length, magnetic penetration depth, critical fields, etc. Following a brief introduction to {mu}SR, three classes of new superconductors will be explored: fullerides, heavy fermions and high-temperature copper oxides. Of particular interest is the interplay between superconductivity and magnetism in the latter two classes of materials. Prospects for future research will then be discussed.
- OSTI ID:
- 560468
- Report Number(s):
- CONF-970443--
- Country of Publication:
- United States
- Language:
- English
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