Nanofriction of neon films on superconducting lead.
With a quartz crystal microbalance technique we have studied the nanofriction of neon monolayers deposited on a lead surface at a temperature around 7 K. Unlike heavier adsorbates, Ne is found to systematically slide at such low temperatures without any evidence of pinning. The crossing of the Pb superconducting-metal transition is not accompanied by any change in dissipation, suggesting that the electronic contribution to friction is negligible for this system.
Pierno
M
M
CNISM and Dipartimento di Fisica G. Galilei, Università di Padova, via Marzolo 8, 35131 Padova, Italy.
Bruschi
L
L
Fois
G
G
Mistura
G
G
Boragno
C
C
de Mongeot
F Buatier
FB
Valbusa
U
U