OBSERVATION OF THE PREDICTED CHARGE COLLECTIVE MODE OF THE Tc=45 K SUPERCONDUCTING PHASE OF La2CuO4+δ

被引：2
作者：
Kim, Y. H. [1 ]
Song, Y. S. [2 ,3 ]
Hor, P. H. [2 ,3 ]
机构：
[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA
[2] Univ Houston, Dept Phys, Houston, TX 77204 USA
[3] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
来源：
MODERN PHYSICS LETTERS B | 2012年 / 26卷 / 04期
关键词：
High-T-c superconductors; optical properties; far-infrared light absorption and reflection; NEUTRON-SCATTERING; SINGLE-CRYSTALS; STATE; BI2SR2CACU2O8+DELTA; ORDER; TEMPERATURE; CARRIERS; SYSTEM;
D O I：
10.1142/S0217984911500205
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the far-infrared (far-IR) observation of the Goldstone mode at similar to 72 cm(-1) (similar to 9 meV) predicted to exist in the superconducting phase of the transition temperature (T-c) at 45 K in the La2CuO4-based superconductors. Our observation furthers the experimental support for the two-component picture where the localized charge texture, formed at a specific planar hole density (P-pl), is tied to the high temperature superconductivity (HTS) at T-c = 15 K, 30 K, and 45 K in a hierarchical fashion at the so-called "magic" doping level at P-pl = 1/16, 2/16, and 3/16 respectively.
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页数：10
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