Universität zu Köln

Kunkemoller, S., Steffens, P., Link, P., Sidis, Y., Mao, Z. Q., Maeno, Y. and Braden, M. (2017). Absence of a Large Superconductivity-Induced Gap in Magnetic Fluctuations of Sr2RuO4. Phys. Rev. Lett., 118 (14). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

Inelastic neutron scattering experiments on Sr2RuO4 determine the spectral weight of the nesting induced magnetic fluctuations across the superconducting transition. There is no observable change at the superconducting transition down to an energy of similar to 0.35 meV, which is well below the 2 Delta values reported in several tunneling experiments. At this and higher energies magnetic fluctuations clearly persist in the superconducting state. Only at energies below similar to 0.3 meV can evidence for partial suppression of spectral weight in the superconducting state be observed. This strongly suggests that the one-dimensional bands with the associated nesting fluctuations do not form the active, highly gapped bands in the superconducting pairing in Sr2RuO4.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kunkemoller, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Steffens, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Link, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sidis, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mao, Z. Q. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maeno, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Braden, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-234118
DOI:	10.1103/PhysRevLett.118.147002
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	118
Number:	14
Date:	2017
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23411