Magnetic ordering in electronically phase-separated La2-x Srx CuO4+y: Neutron diffraction experiments

L. Udby; F. C. Chou; N. B. Christensen; S. B. Emery; K. Lefmann; J. W. Lynn; H. E. Mohottala; Ch Niedermayer; B. O. Wells

doi:10.1103/PhysRevB.80.014505

Magnetic ordering in electronically phase-separated La_2-x Sr_x CuO_4+y: Neutron diffraction experiments

L. Udby^*, F. C. Chou, N. B. Christensen, S. B. Emery, K. Lefmann, J. W. Lynn, H. E. Mohottala, Ch Niedermayer, B. O. Wells

^*Corresponding author af dette arbejde

8 Citationer (Scopus)

Abstract

We present results of magnetic neutron diffraction experiments on the codoped superoxygenated La2-x Srx CuO4+y (LSCO+O) system with x=0.09. We find that the magnetic phase is long-range ordered incommensurate antiferromagnetic with a Néel temperature TN coinciding with the superconducting ordering temperature Tc =40 K. The incommensurability value is consistent with a hole doping of nh ≈ 1 8 but in contrast to nonsuperoxygenated La2-x Srx CuO4 with hole doping close to nh ≈ 1 8 the magnetic-order parameter is not field dependent. We attribute this to the magnetic order being fully developed in LSCO+O as in the spin and charge ordered "stripe" compounds La1.48 Nd0.40 Sr0.12 CuO4 and La7/8 Ba1/8 CuO4.

Originalsprog	Engelsk
Artikelnummer	014505
Tidsskrift	Physical Review B - Condensed Matter and Materials Physics
Vol/bind	80
Udgave nummer	1
ISSN	1098-0121
DOI	https://doi.org/10.1103/PhysRevB.80.014505
Status	Udgivet - 6 aug. 2009

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10.1103/PhysRevB.80.014505

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Citationsformater

@article{235450268e344b9596c066aa93de3b6b,

title = "Magnetic ordering in electronically phase-separated La2-x Srx CuO4+y: Neutron diffraction experiments",

abstract = "We present results of magnetic neutron diffraction experiments on the codoped superoxygenated La2-x Srx CuO4+y (LSCO+O) system with x=0.09. We find that the magnetic phase is long-range ordered incommensurate antiferromagnetic with a N{\'e}el temperature TN coinciding with the superconducting ordering temperature Tc =40 K. The incommensurability value is consistent with a hole doping of nh ≈ 1 8 but in contrast to nonsuperoxygenated La2-x Srx CuO4 with hole doping close to nh ≈ 1 8 the magnetic-order parameter is not field dependent. We attribute this to the magnetic order being fully developed in LSCO+O as in the spin and charge ordered {"}stripe{"} compounds La1.48 Nd0.40 Sr0.12 CuO4 and La7/8 Ba1/8 CuO4.",

author = "L. Udby and Chou, {F. C.} and Christensen, {N. B.} and Emery, {S. B.} and K. Lefmann and Lynn, {J. W.} and Mohottala, {H. E.} and Ch Niedermayer and Wells, {B. O.}",

year = "2009",

month = aug,

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doi = "10.1103/PhysRevB.80.014505",

language = "English",

volume = "80",

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TY - JOUR

T1 - Magnetic ordering in electronically phase-separated La2-x Srx CuO4+y

T2 - Neutron diffraction experiments

AU - Udby, L.

AU - Chou, F. C.

AU - Christensen, N. B.

AU - Emery, S. B.

AU - Lefmann, K.

AU - Lynn, J. W.

AU - Mohottala, H. E.

AU - Niedermayer, Ch

AU - Wells, B. O.

PY - 2009/8/6

Y1 - 2009/8/6

N2 - We present results of magnetic neutron diffraction experiments on the codoped superoxygenated La2-x Srx CuO4+y (LSCO+O) system with x=0.09. We find that the magnetic phase is long-range ordered incommensurate antiferromagnetic with a Néel temperature TN coinciding with the superconducting ordering temperature Tc =40 K. The incommensurability value is consistent with a hole doping of nh ≈ 1 8 but in contrast to nonsuperoxygenated La2-x Srx CuO4 with hole doping close to nh ≈ 1 8 the magnetic-order parameter is not field dependent. We attribute this to the magnetic order being fully developed in LSCO+O as in the spin and charge ordered "stripe" compounds La1.48 Nd0.40 Sr0.12 CuO4 and La7/8 Ba1/8 CuO4.

AB - We present results of magnetic neutron diffraction experiments on the codoped superoxygenated La2-x Srx CuO4+y (LSCO+O) system with x=0.09. We find that the magnetic phase is long-range ordered incommensurate antiferromagnetic with a Néel temperature TN coinciding with the superconducting ordering temperature Tc =40 K. The incommensurability value is consistent with a hole doping of nh ≈ 1 8 but in contrast to nonsuperoxygenated La2-x Srx CuO4 with hole doping close to nh ≈ 1 8 the magnetic-order parameter is not field dependent. We attribute this to the magnetic order being fully developed in LSCO+O as in the spin and charge ordered "stripe" compounds La1.48 Nd0.40 Sr0.12 CuO4 and La7/8 Ba1/8 CuO4.

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U2 - 10.1103/PhysRevB.80.014505

DO - 10.1103/PhysRevB.80.014505

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