Superconductivity Dependent Friction of Water, Nitrogen, and Superheated He Films Adsorbed on Pb(111)

M. Highland; J. Krim

doi:10.1103/PhysRevLett.96.226107

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Superconductivity Dependent Friction of Water, Nitrogen, and Superheated He Films Adsorbed on Pb(111)

M. Highland, J. Krim

DOI 10.1103/PhysRevLett.96.226107 · Physical Review Letters

T1

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Abstract

We report a quartz crystal microbalance study of sliding friction levels in N2, H2O, and superheated He films adsorbed on Pb(111) substrates alternating in and out of the superconducting state. Reductions in friction upon entry into the superconducting state are greater for N2 than He, consistent with a recent theory that linked electronic friction to adsorbate polarizability. Our work also reveals that repetitive cycling of an externally applied magnetic field may impact friction.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.2	Pressure not reported	unknown