Evidence for an incommensurate magnetic resonance in La2-xSrxCuO4

被引：72

作者：

Tranquada, JM ^{[1
]}

Lee, CH

Yamada, K

Lee, YS

Regnault, LP

Ronnow, HM

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[3] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[4] MIT, Dept Phys, Cambridge, MA 02139 USA

[5] CEA Grenoble, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.69.174507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the effect of a magnetic field (applied along the c axis) on the low-energy, incommensurate magnetic fluctuations in superconducting La1.82Sr0.18CuO4. The incommensurate peaks at 9 meV, which in zero field were previously shown to sharpen in q on cooling below T-c [T. E. Mason , Phys. Rev. Lett. 77, 1604 (1996)], are found to broaden in q when a field of 10 T is applied. The applied field also causes scattered intensity to shift into the spin gap. We point out that the response at 9 meV, though occurring at incommensurate wave vectors, is comparable to the commensurate magnetic resonance observed at higher energies in other cuprate superconductors.

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页码：174507 / 1

页数：7

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