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General Questions and Answers / Potential profile in tunnel junction?
« on: April 2, 2016, 14:25 »
The attached figure (and the following http link) is a schematic picture of my question.
http://image.baidu.com/detail/newindex?col=&tag=&pn=0&pid=32496347084&aid=411828503&user_id=113241369&setid=-1&sort=0&newsPn=&star=&fr=&from=2
Short version:
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How to calculate the electrostatic potential profile in the metal-vacuum-insulator-metal junction with a bias potential?
*******************
Longer version:
*******************
Hello every one,
I want to figure the energy level alignment between the molecule and the metal leads in a STM with a finite bias voltage ~2volts. The molecule is decoupled from the metal substrate by an insulating decoupling layer (several monolayer of NaCl) Since the two leads are biased, there must be a potential drop across the junction. I guess it's crucial to know the potential profile to determine the energy level alignment between the molecule and the metal lead. But how can I calculate this electrostatic potential profile when the two leads are biased?
*******************
Thanks very much for your help ^_^
http://image.baidu.com/detail/newindex?col=&tag=&pn=0&pid=32496347084&aid=411828503&user_id=113241369&setid=-1&sort=0&newsPn=&star=&fr=&from=2
Short version:
*******************
How to calculate the electrostatic potential profile in the metal-vacuum-insulator-metal junction with a bias potential?
*******************
Longer version:
*******************
Hello every one,
I want to figure the energy level alignment between the molecule and the metal leads in a STM with a finite bias voltage ~2volts. The molecule is decoupled from the metal substrate by an insulating decoupling layer (several monolayer of NaCl) Since the two leads are biased, there must be a potential drop across the junction. I guess it's crucial to know the potential profile to determine the energy level alignment between the molecule and the metal lead. But how can I calculate this electrostatic potential profile when the two leads are biased?
*******************
Thanks very much for your help ^_^