LiquidHellum-3. The helium-3 atom contains an odd number of fermions thus it is itself a fermion. For many years, it was expected that Hquid helium-3 might have relatively normal properties at even the lowest temperatures. This expectation was tempered, however, by quasisuperfluid behavior observed in another fermion system. The conduction electrons in metals are fermions, and at low temperatures, some metals become superconducting. Their resistance to direct current becomes identicaHy zero which implies a superfluid behavior of the conduction electrons. In 1957 (63) superconductivity was explained by showing that a net attractive force between pairs of electrons could be created through their interactions with the lattice ions (63). These bound pairs formed a single quasiparticle having an even number of fermions which then behaved as a boson. This theory implied that, at low enough temperature, helium-3 atoms should also form bound pairs and show some form of superfluidity.  [c.8]

See pages that mention the term Lycodoline : [c.1473]    [c.571]    [c.84]    [c.753]    [c.255]    [c.275]   
The logic of chemical synthesis (1989) -- [ c.403 ]