Nature of the magnetic order in the charge-ordered cuprate La1.48Nd0.4Sr0.12CuO4

被引：52

作者：

Christensen, N. B. ^{[1
]}

Ronnow, H. M.

Mesot, J.

Ewings, R. A.

Momono, N.

Oda, M.

Ido, M.

Enderle, M.

McMorrow, D. F.

Boothroyd, A. T.

机构：

[1] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[3] Tech Univ Denmark, Mat Res Dept, Riso Natl Lab, DK-4000 Roskilde, Denmark

[4] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland

[5] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[6] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan

[7] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[8] UCL, London Ctr Nanotechnol, London WC1E 6BT, England

[9] UCL, Dept Phys & Astron, London WC1E 6BT, England

[10] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.98.197003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using polarized neutron scattering we establish that the magnetic order in La(1.48)Nd(0.4)Sr(0.12)CuO(4) is either (i) one dimensionally modulated and collinear, consistent with the stripe model or (ii) two dimensionally modulated with a novel noncollinear structure. The measurements rule out a number of alternative models characterized by 2D electronic order or 1D helical spin order. The low-energy spin excitations are found to be primarily transversely polarized relative to the stripe ordered state, consistent with conventional spin waves.

引用

页数：4

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