Cyclotron resonance and effective mass renormalizations in Sr<sub>2</sub>RuO<sub>4</sub>期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Cyclotron resonance and effective mass renormalizations in Sr₂RuO₄

Authors:	S Hill J S Brooks Z Q Mao Y Maeno

Institution:	^a Department of Physics, Montana State University, Bozeman, MT 59717, USA ^b National High Magnetic Field Laboratory, 1800 E. Paul Dirac Dr., Tallahassee, FL 32310, USA ^c Department of Physics, Kyoto University, Kyoto 606-8502, Japan; and CREST-JST, Kawaguchi, Saitama 332-0012, Japan

Abstract:	Using a microwave cavity perturbation technique, we have succeeded in observing cyclotron resonances in the layered Perovskite superconductor Sr₂RuO₄. Three cyclotron masses are deduced, corresponding to m_cγ=9.7m_e, m_cβ=5.8m_e and m_c=4.3 m_e. A comparison between these values and the effective masses deduced from other techniques provides us with a unique means of gauging the role of Coulomb correlations in the title compound.

Keywords:	Correlated electron system Cyclotron resonance Sr₂RuO₄
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