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Atomic tunneling from a stm/afm tip: dissipative quantum effects from phonons.
| Content Provider | CiteSeerX |
|---|---|
| Author | Louis, Ard Sethna, James P. |
| Abstract | We study the effects of phonons on the tunneling of an atom between two surfaces. In contrast to an atom tunneling in the bulk, the phonons couple very strongly, and qualitatively change the tunneling behavior. This is the first example of ohmic coupling from phonons for a two-state system. We propose an experiment in which an atom tunnels from the tip of an STM, and show how its behavior would be similar to the Macroscopic Quantum Coherence behavior predicted for SQUIDS. The ability to tune and calculate many parameters would lead to detailed tests of the standard theories. PACS numbers: 61.16.C, 68.35.Wm. 03.65.Bz, 63.20.Mt. Typeset using REVT E X The fascinating experiments carried out by Eigler and colleagues [1--4] have shown that scanning tunneling microscopy can be used not only for imaging, but also to directly demonstrate fundamental aspects of quantum mechanics. Inspired by their success, we propose an experiment to test the effect of a dissipative environment on a quantum ... |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Atomic Tunneling Stm Afm Tip Dissipative Quantum Effect Atom Tunnel Pac Number Fundamental Aspect Many Parameter Dissipative Environment Fascinating Experiment First Example Quantum Mechanic Standard Theory Macroscopic Quantum Coherence Behavior Two-state System Detailed Test Atom Tunneling Tunneling Behavior Ohmic Coupling |
| Content Type | Text |
