TUNNELING MECHANISMS IN ELECTROCHEMICAL STM - DISTANCE AND VOLTAGE TUNNELING SPECTROSCOPY

被引：99

作者：

HALBRITTER, J ^{[1
]}

REPPHUN, G ^{[1
]}

VINZELBERG, S ^{[1
]}

STAIKOV, G ^{[1
]}

LORENZ, WJ ^{[1
]}

机构：

[1] UNIV KARLSRUHE,INST PHYS CHEM & ELECTROCHEM,D-76131 KARLSRUHE,GERMANY

来源：

ELECTROCHIMICA ACTA | 1995年 / 40卷 / 10期

关键词：

ELECTROCHEMICAL STM; DISTANCE TUNNELING SPECTROSCOPY; VOLTAGE TUNNELING SPECTROSCOPY; INTERMEDIATE STATE TUNNELING; EFFECTIVE BARRIER HEIGHT;

D O I：

10.1016/0013-4686(95)00038-G

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The tunneling mechanisms in electrochemical STM are studied by distance and voltage tunneling spectroscopy in different model systems. The experimental results indicate an indirect tunneling process via intermediate states. Significant influences of the chemical nature and crystallographic orientation of the substrate and the structure of 2-D upd adlayers on the effective barrier height of the tunneling process are observed. The intermediate states are related to dipole resonances of well-ordered water dipoles located in the electrochemical double layers at the tip/electrolyte and substrate/electrolyte interfaces.

引用

页码：1385 / 1394

页数：10

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