Universität zu Köln

Steffens, P., Sidis, Y., Kulda, J., Mao, Z. Q., Maeno, Y., Mazin, I. I. and Braden, M. (2019). Spin Fluctuations in Sr2RuO4 from Polarized Neutron Scattering: Implications for Superconductivity. Phys. Rev. Lett., 122 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

Full text not available from this repository.

Abstract

Triplet pairing in Sr2RuO4 was initially suggested based on the hypothesis of strong ferromagnetic spin fluctuations. Using polarized inelastic neutron scattering, we accurately determine the full spectrum of spin fluctuations in Sr2RuO4. Besides the well-studied incommensurate magnetic fluctuations, we do find a sizable quasiferromagnetic signal, quantitatively consistent with all macroscopic and microscopic probes. We use this result to address the possibility of magnetically driven triplet superconductivity in Sr2RuO4. We conclude that, even though the quasiferromagnetic signal is stronger and sharper than previously anticipated, spin fluctuations alone are not enough to generate a triplet state strengthening the need for additional interactions or an alternative pairing scenario.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Steffens, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sidis, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kulda, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mao, Z. Q. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maeno, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mazin, I. I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Braden, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-158103
DOI:	10.1103/PhysRevLett.122.047004
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	122
Number:	4
Date:	2019
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 TRIPLET SUPERCONDUCTIVITY; MAGNETISM; NMR; MECHANISM Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15810