Dispersion of Magnetic Excitations in the Cuprate La2CuO4 and CaCuO2 Compounds Measured Using Resonant X-Ray Scattering

被引：147

作者：

Braicovich, L. ^{[1
]}

Ament, L. J. P. ^{[2
]}

Bisogni, V. ^{[3
]}

Forte, F. ^{[2
,4
]}

Aruta, C. ^{[5
]}

Balestrino, G. ^{[6
,7
]}

Brookes, N. B. ^{[3
]}

De Luca, G. M. ^{[5
]}

Medaglia, P. G. ^{[6
,7
]}

Granozio, F. Miletto ^{[5
]}

Radovic, M. ^{[5
]}

Salluzzo, M. ^{[5
]}

van den Brink, J. ^{[2
,8
]}

Ghiringhelli, G. ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Fis, CNR INFM Coherentia & Soft, I-20133 Milan, Italy

[2] Leiden Univ, Inst Lorentz Theoret Phys, NL-2300 RA Leiden, Netherlands

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[4] Univ Salerno, Dipartimento Fis ER Caianiello, CNR, INFM Supermat, I-84081 Baronissi, Italy

[5] Univ Naples Federico 2, Dipartimento Sci Fis, CNR, INFM Coherentia, I-80126 Naples, Italy

[6] Univ Roma Tor Vergata, CNR, INFM Coherentia, I-00133 Rome, Italy

[7] Univ Roma Tor Vergata, Dipartimento Ingn Meccan, I-00133 Rome, Italy

[8] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6500 GL Nijmegen, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 16期

关键词：

ENERGY SPIN EXCITATIONS; LAMELLAR COPPER OXIDES; TEMPERATURE SUPERCONDUCTOR; RESOLUTION;

D O I：

10.1103/PhysRevLett.102.167401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By resonant inelastic x-ray scattering in the soft x-ray regime we probe the dynamical multiple-spin correlations in the antiferromagnetic cuprates La2CuO4 and CaCuO2. High resolution measurements at the copper L-3 edge allow the clear observation of dispersing bimagnon excitations. Theory based on the ultrashort core-hole lifetime expansion fits the data on these coherent spin excitations without free parameters.

引用

页数：4

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