Magnetic phase diagram of La2−xSrxCoO4 revised using muon-spin relaxation

Williams, R. C., Xiao, F., Lancaster, T., De Renzi, R., Allodi, G., Bordignon, S., Freeman, P. G., Pratt, F. L., Giblin, Sean ORCID: https://orcid.org/0000-0003-1876-8619, Möller, J. S., Blundell, S. J., Boothroyd, A. T. and Prabhakaran, D. 2016. Magnetic phase diagram of La2−xSrxCoO4 revised using muon-spin relaxation. Physical Review B 93 (14) , 140406(R). 10.1103/PhysRevB.93.140406

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Abstract

We report the results of a muon-spin relaxation (μSR) investigation of La2−xSrxCoO4, an antiferromagnetic insulating series which has been shown to support charge ordered and magnetic stripe phases and an hourglass magnetic excitation spectrum. We present a revised magnetic phase diagram, which shows that the suppression of the magnetic ordering temperature is highly sensitive to small concentrations of holes. Distinct behavior within an intermediate x range (0.2≤x≲0.6) suggests that the putative stripe ordered phase extends to lower x than previously thought. Further charge doping (0.67≤x≤0.9) prevents magnetic ordering for T≳1.5K.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	2469-9950
Date of Acceptance:	9 March 2016
Last Modified:	14 Nov 2024 17:00
URI:	https://orca.cardiff.ac.uk/id/eprint/89335

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