Field-induced electronic phase separation in the high-temperature superconductor La1.94Sr0.06CuO4+y

S. Holm-Dahlin, J. Larsen, H. Jacobsen, A. T. Rømer, A. E. Ţuţueanu, M. Ahmad, J. C. Grivel, R. Scheuermann, M. V. Zimmermann, M. Boehm, P. Steffens, Ch Niedermayer, K. S. Pedersen, N. B. Christensen, B. O. Wells, K. Lefmann, L. Udby

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

We present a combined neutron diffraction and high-field muon spin rotation (μSR) study of the magnetically ordered and superconducting phases of the high-temperature superconductor La1.94Sr0.06CuO4+y [Tc=37.5(2) K] in a magnetic field applied perpendicular to the CuO2 planes. We observe a linear field-dependence of the intensity of the neutron diffraction peak that reflects the modulated antiferromagnetic stripe order. The magnetic volume fraction extracted from μSR data likewise increases linearly with applied magnetic field. The combination of these two observations allows us to unambiguously conclude that stripe-ordered regions grow in an applied field, whereas the stripe-ordered magnetic moment itself is field-independent. This contrasts with earlier suggestions that the field-induced neutron diffraction intensity in La-based cuprates is due to an increase in the ordered moment. We discuss a microscopic picture that is capable of reconciling these conflicting viewpoints.

Original languageEnglish
Article number174517
JournalPhysical Review B
Volume109
Issue number17
Number of pages13
ISSN2469-9950
DOIs
Publication statusPublished - 2024

Fingerprint

Dive into the research topics of 'Field-induced electronic phase separation in the high-temperature superconductor La1.94Sr0.06CuO4+y'. Together they form a unique fingerprint.

Cite this