BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Quantum effects in surface diffusion and scattering - Eliza McInto
 sh\, SMF Group\, Cavendish Laboratory
DTSTART:20121025T150000Z
DTEND:20121025T160000Z
UID:TALK39103@talks.cam.ac.uk
CONTACT:Stephen Walley
DESCRIPTION:Quantum effects are expected in the dynamics of light adsorbat
 es at surfaces\, however they present a formidable challenge to experiment
 alists. We describe two recent studies demonstrating quantum effects in su
 rface scattering and diffusion measured using the helium Spin-Echo techniq
 ue\, which allows resolution of atomic scale motion on pico- to nano-secon
 d timescales.\nWe first consider the absorption and diffusion of hydrogen 
 on the Ru(0001) surface where we observe a transition from classical behav
 iour to a deep tunnelling regime at the relatively high temperature of 140
  K. Path Integral Molecular Dynamics\, proton band-structure calculations\
 , and Monte Carlo simulations\, give insights into phenomena such as tempe
 rature-dependent friction and strong inter-adsorbate interactions.\nSecond
 ly\, we present the first measurements of surface dynamics of the Ionic Li
 quid 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide [C2C1I
 m][Tf2N] on an Au(111) substrate\, where quantum scattering is seen.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
END:VEVENT
END:VCALENDAR