Universität zu Köln

Ricci, Alessandro, Poccia, Nicola, Campi, Gaetano, Mishra, Shrawan, Mueller, Leonard, Joseph, Boby ORCID: 0000-0002-3334-7540, Shi, Bo, Zozulya, Alexey ORCID: 0000-0003-1048-3432, Buchholz, Marcel, Trabant, Christoph, Lee, James C. T., Viefhaus, Jens, Goedkoop, Jeroen B., Nugroho, Agustinus Agung, Braden, Markus, Roy, Sujoy, Sprung, Michael and Schuessler-Langeheine, Christian (2021). Measurement of Spin Dynamics in a Layered Nickelate Using X-Ray Photon Correlation Spectroscopy: Evidence for Intrinsic Destabilization of Incommensurate Stripes at Low Temperatures. Phys. Rev. Lett., 127 (5). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We study the temporal stability of stripe-type spin order in a layered nickelate with x-ray photon correlation spectroscopy and observe fluctuations on timescales of tens of minutes over a wide temperature range. These fluctuations show an anomalous temperature dependence: they slow down at intermediate temperatures and speed up on both heating and cooling. This behavior appears to be directly connected with spatial correlations: stripes fluctuate slowly when stripe correlation lengths are large and become faster when spatial correlations decrease. A low-temperature decay of nickelate stripe correlations, reminiscent of what occurs in cuprates as a result of a competition between stripes and superconductivity, hence occurs via loss of both spatial and temporal correlations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ricci, Alessandro UNSPECIFIED UNSPECIFIED UNSPECIFIED Poccia, Nicola UNSPECIFIED UNSPECIFIED UNSPECIFIED Campi, Gaetano UNSPECIFIED UNSPECIFIED UNSPECIFIED Mishra, Shrawan UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, Leonard UNSPECIFIED UNSPECIFIED UNSPECIFIED Joseph, Boby UNSPECIFIED orcid.org/0000-0002-3334-7540 UNSPECIFIED Shi, Bo UNSPECIFIED UNSPECIFIED UNSPECIFIED Zozulya, Alexey UNSPECIFIED orcid.org/0000-0003-1048-3432 UNSPECIFIED Buchholz, Marcel UNSPECIFIED UNSPECIFIED UNSPECIFIED Trabant, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Lee, James C. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Viefhaus, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED Goedkoop, Jeroen B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nugroho, Agustinus Agung UNSPECIFIED UNSPECIFIED UNSPECIFIED Braden, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Roy, Sujoy UNSPECIFIED UNSPECIFIED UNSPECIFIED Sprung, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuessler-Langeheine, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-603137
DOI:	10.1103/PhysRevLett.127.057001
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	127
Number:	5
Date:	2021
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 CUPRATE SUPERCONDUCTORS; CHARGE STRIPES; ORDER; SCATTERING; LA2-XSRXNIO4; FLUCTUATIONS; COMPETITION; MAGNETISM Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60313