To appreciate the distance dependence of the tunnelling current in scanning tunnelling microscopy, suppose that the electron
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To appreciate the distance dependence of the tunnelling current in scanning tunnelling microscopy, suppose that the electron in the gap between sample and needle has an energy 2.0 eV smaller than the barrier height. By what factor would the current drop if the needle is moved from L1=0.50nm to L2=0.60nm from the surface?
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Calculation The current I is given by I I0 exp2 a L L0 where ...View the full answer
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Related Book For 
Physical Chemistry Thermodynamics And Kinetics
ISBN: 9781464124518
10th Edition
Authors: Peter Atkins, Julio De Paula
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