Attempts to test an alternative electrodynamic theory of superconductors by low-temperature scanning tunneling and atomic force microscopy

URN to cite this document:

urn:nbn:de:bvb:355-epub-348609 Copy

DOI to cite this document:

10.5283/epub.34860 Copy

Peronio, Angelo ; Giessibl, Franz J.

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Date of publication of this fulltext: 21 Nov 2016 12:28

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Details

Item type:	Article
Journal or Publication Title:	Physical Review B (PRB)
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
Volume:	94
Number of Issue or Book Chapter:	094503
Page Range:	094503
Date:	18 July 2016
Institutions:	Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl
Projects:	SFB 689: Spinphänomene in reduzierten Dimensionen
Identification Number:	Value Type 10.1103/PhysRevB.94.094503 DOI
Keywords:	SURFACE; TIPS; NANOSCALE; CHARGE; STM;
Dewey Decimal Classification:	500 Science > 530 Physics
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	34860

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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 ...

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.

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Metadata last modified: 25 Nov 2020 21:54

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