Comprehensive study of the spin-charge interplay in antiferromagnetic La2−xSrxCuO₄

Drachuck, Gil; Razzoli, Elia; Bazalitski, Galina; Kanigel, Amit; Niedermayer, Christof; Shi, Ming; Keren, Amit

doi:10.1038/ncomms4390

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Comprehensive study of the spin-charge interplay in antiferromagnetic La_2−xSr_xCuO₄

Drachuck, Gil Department of Physics, Technion—Israel Institute of Technology, Haifa, Israel
Razzoli, Elia Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland - Departement de Physique and Fribourg Center for Nanomaterials, University de Fribourg, Switzerland
Bazalitski, Galina Department of Physics, Technion—Israel Institute of Technology, Haifa, Israel
Kanigel, Amit Department of Physics, Technion—Israel Institute of Technology, Haifa, Israel
Niedermayer, Christof Laboratory for Neutron Scattering, Paul Scherrer Institute, Villigen, Switzerland
Shi, Ming Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
Keren, Amit Department of Physics, Technion—Israel Institute of Technology, Haifa, Israel

27.02.2014

Published in:

Nature Communications. - 2014, vol. 5, no. 1, p. 3390

English The origin of the pseudogap and its relationship with superconductivity in the cuprates remains vague. In particular, the interplay between the pseudogap and magnetism is mysterious. Here we investigate the newly discovered nodal gap in hole-doped cuprates using a combination of three experimental techniques applied to one, custom made, single crystal. The crystal is an antiferromagnetic La_2−xSr_xCuO₄ with x=1.92%. We perform angle-resolved photoemission spectroscopy measurements as a function of temperature and find: quasi-particle peaks, Fermi surface, anti-nodal gap and below 45 K a nodal gap. Muon spin rotation measurements ensure that the sample is indeed antiferromagnetic and that the doping is close, but below, the spin-glass phase boundary. We also perform elastic neutron scattering measurements and determine the thermal evolution of the commensurate and incommensurate magnetic order, where we find that a nodal gap opens well below the commensurate ordering at 140 K, and close to the incommensurate spin density wave ordering temperature of 30 K.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language

English

Classification

Physics

License

License undefined

Identifiers

RERO DOC 210170
DOI 10.1038/ncomms4390

Persistent URL

https://folia.unifr.ch/unifr/documents/303734

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