Direct Observation of k∥ and k⊥ Stripe Excitations in La2−xSrxCuO4

被引：0
作者：
S. Sugai
Y. Tamai
Y. Takayanagi
N. Hayamizu
T. Muroi
机构：
[1] Petroleum Institute,Department of Physics, Arts and Science
[2] Nagoya University,Department of Physics, Faculty of Science
[3] Japan Science and Technology Agency (JST),TRIP
[4] The Petroleum Institute,College of Arts and Sciences
来源：
Journal of Superconductivity and Novel Magnetism | 2012年 / 25卷
关键词：
Spin-charge stripe; Separated dispersion curve; High-temperature superconductor; Two-magnon Raman scattering;
D O I：
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中图分类号：
学科分类号：
摘要：
The superconducting transition temperature in the cuprate is pointed to be enhanced by the self-organized spin-charge separated stripes. The magnetic excitations are very different in k∥ and k⊥ stripes. Therefore if one detects the different excitations, it is a clear evidence of the stripe. Neutron scattering, however, always observes the mixed excitations. We first succeeded to detect the k⊥ stripe excitations of the separated dispersion induced by the super-lattice structure of the stripe in distinction from the k∥ stripe excitations by two-magnon Raman scattering. The stripe structure is ubiquitous in the whole carrier density range at low temperatures.
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页码：1393 / 1397
页数：4
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