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arXiv 0902.3937cond-mat.str-el
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Sr3Ru2O7反常相位中的量子振荡

Quantum oscillations in the anomalous phase in Sr3Ru2O7

J. -F. Mercure, S. K. Goh, E. C. T. O'Farrell, R. S. Perry, M. L. Sutherland, A. Rost, S. A. Grigera, R. A. Borzi, P. Gegenwart, A. P. Mackenzie

摘要:

我们报告测量的量子振荡中检测到的推定的Sr 3Ru 2 O 7相。样品纯度的显着改善,使小振幅dHvA振荡之间的两个第一阶变磁过渡界定的相位的分辨率。观察到两个不同的频率,其振幅遵循正常的Lifshitz-Kosevich曲线。费米表面片似乎对应于那些检测到的相位以外的子集。的dHvA频率的变化被解释在化学势的位移产生的状态密度达到一个峰值,和一个异常的振荡幅度的字段依赖性提供信息域。

英文摘要:

We report measurements of quantum oscillations detected in the putative nematic phase of Sr3Ru2O7. Significant improvements in sample purity enabled the resolution of small amplitude dHvA oscillations between two first order metamagnetic transitions delimiting the phase. Two distinct frequencies were observed, and their amplitudes follow the normal Lifshitz-Kosevich profile. The Fermi surface sheets seem to correspond to a subset of those detected outside the phase. Variations of the dHvA frequencies are explained in terms of a chemical potential shift produced by reaching a peak in the density of states, and an anomalous field dependence of the oscillatory amplitude provides information on domains.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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