Peronio, Angelo and Giessibl, Franz J. (2016) Attempts to test an alternative electrodynamic theory of superconductors by low-temperature scanning tunneling and atomic force microscopy. PHYSICAL REVIEW B, 94 (9): 094503. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
We perform an experiment to test between two theories of the electrodynamics of superconductors: the standard London theory and an alternative proposed by J. E. Hirsch [Phys. Rev. B 69, 214515 (2004)]. The two alternatives give different predictions with respect to the screening of an electric field by a superconductor, and we try to detect this effect using atomic force microscopy on a niobium sample. We also perform the reverse experiment, where we demonstrate a superconductive tip mounted on a qPlus force sensor. Due to limited accuracy, we are able neither to prove nor to disprove Hirsch's hypothesis. Within our accuracy of 0.17 N/m, the superconductive transition does not alter the atomic-scale interaction between tip and sample.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SURFACE; TIPS; NANOSCALE; CHARGE; STM; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Mar 2019 14:18 |
| Last Modified: | 18 Mar 2019 14:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3423 |
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