TY - JOUR
T1 - Non-exponential tunneling in water near an electrode
AU - Vaught, A.
AU - Jing, T. W.
AU - Lindsay, Stuart
N1 - Funding Information:
We thank Stefan Vinzelberg for suggesting the correct explanation of the dip in K at low bias. We are grateful to Wolfgang Schmickler, Juergen Halbritter and Reg Penner for useful discussions and for sharing their work with us prior to publication. Tom Wandlowski and David Lampner helped us achieve clean conditions in the STM cell. This work was supported by the ONR (N00014-90-J-1455) and NIH (1 R21 HG0081801A1).
PY - 1995/4/13
Y1 - 1995/4/13
N2 - We have measured the inverse decay length (κ) for tunneling in water between a Pt-Ir tip and an Au(111) surface. At 109 Ω κ = 0.92 ± 0.16 Å-1 (Au negative), almost independent of electrochemical potential. An unexpected drop is observed as the gap resistance is reduced below 108 Ω. The tunnel gap at 109 Ω is about 20 Å, 12 Å more than predicted by ab initio calculations. It is Ohmic for resistances between 109 and 106 Ω and voltages less than 0.1 V, implying that sharp resonances do not play a role.
AB - We have measured the inverse decay length (κ) for tunneling in water between a Pt-Ir tip and an Au(111) surface. At 109 Ω κ = 0.92 ± 0.16 Å-1 (Au negative), almost independent of electrochemical potential. An unexpected drop is observed as the gap resistance is reduced below 108 Ω. The tunnel gap at 109 Ω is about 20 Å, 12 Å more than predicted by ab initio calculations. It is Ohmic for resistances between 109 and 106 Ω and voltages less than 0.1 V, implying that sharp resonances do not play a role.
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U2 - 10.1016/0009-2614(95)00223-Q
DO - 10.1016/0009-2614(95)00223-Q
M3 - Article
AN - SCOPUS:0001223674
VL - 236
SP - 306
EP - 310
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 3
ER -