SHARP MAGNETOABSORPTION RESONANCES IN THE VORTEX STATE OF BI2SR2CACU2O8+DELTA

被引：162

作者：

TSUI, OKC

ONG, NP

MATSUDA, Y

YAN, YF

PETERSON, JB

机构：

[1] HOKKAIDO UNIV,DEPT PHYS,SAPPORO,HOKKAIDO 060,JAPAN

[2] CARNEGIE MELLON UNIV,DEPT PHYS,PITTSBURGH,PA 15213

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.73.724

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of narrow resonances in the absorption of mm wavelength radiation (30 to 50 GHz) in the vortex state of Bi2Sr2CaCu2O8+delta. When the applied field B (parallel-to c) is swept at fixed frequency omega, the absorption displays two distinct Lorentzian peaks at the resonance fields B0 and B1. The resonance frequency decreases with increasing field, consistent with anticyclotronic behavior. At fixed omega, B0 and B1 also vary strongly with temperature T. B0 and B1 increase to a sharp maximum when T crosses the vortex solid-to-liquid transition line inferred from resistivity results. The coupling of cyclotron resonance with collective modes giving rise to an anticyclotronic mode is discussed.

引用

页码：724 / 727

页数：4

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