Observability of a projected new state of matter: a metallic superfluid

Details Observability of a projected new state of matter: a metallic superfluid Observability of a projected new state of matter: a metallic superfluid

2005-07-26

arxiv.org/abs/cond-mat/0507605v1

Phys. Rev. Lett. 95, 105301 (2005)

Physics

Condensed Matter

Superconductivity

in print in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.105301

Dissipationless quantum states, such as superconductivity and superfluidity, have attracted interest for almost a century. A variety of systems exhibit these macroscopic quantum phenomena, ranging from superconducting electrons in metals to superfluid liquids, atomic vapours, and even large nuclei. It was recently suggested that liquid metallic hydrogen could form two new unusual dissipationless quantum states, namely the metallic superfluid and the superconducting superfluid. Liquid metallic hydrogen is projected to occur only at an extremely high pressure of about 400 GPa, while pressures on hydrogen of 320 GPa having already been reported. The issue to be adressed is if this state could be experimentally observable in principle. We propose four experimental probes for detecting it.

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