Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
Nano Lett. 2009 Nov;9(11):3909-13. doi: 10.1021/nl9021094.
The promise of transition voltage spectroscopy (TVS) is that molecular level positions can be determined in molecular devices without applying extreme voltages. Here, we consider the physics behind TVS in more detail. Remarkably, we find that the Simmons model employed thus far is inconsistent with experimental data. However, a coherent molecular transport model does justify TVS as a spectroscopic tool. Moreover, TVS may become a critical test to distinguish molecular junctions from vacuum tunnel junctions.
转变电压谱（TVS）的承诺在于，在不施加极端电压的情况下，能够确定分子器件中的分子级位置。在这里，我们更详细地考虑 TVS 的物理原理。值得注意的是，我们发现迄今为止所采用的 Simmons 模型与实验数据不一致。然而，一个连贯的分子输运模型确实证明了 TVS 作为一种光谱工具的合理性。此外，TVS 可能成为区分分子结和真空隧道结的关键测试手段。
