Probing the dx2-y2-wave Pomeranchuk instability by ultrasound

Article

关键词: SPIN FLUCTUATIONS;    TEMPERATURE;    METAMAGNETISM;    TRANSITION;    ELECTRONS;    CONDUCTIVITY;    DISORDER;    STATE;    FLOW;   

DOI  :  10.1103/PhysRevB.80.155123

来源: SCIE

【 摘 要 】

Selection rules of ultrasound attenuation and sound-velocity renormalization are analyzed in view of their potential application to identify Pomeranchuk instabilities (electronic nematic phase). It is shown that the transverse sound attenuation along [110] direction is enhanced by the Fermi-surface fluctuations near a d(x2-y2)-wave Pomeranchuk instability, while the attenuation along (100) direction remains unaffected. Moreover the fluctuation regime above the instability is analyzed by means of a self-consistent renormalization scheme. The results could be applied directly to Sr3Ru2O7 which is a potential candidate for a Pomeranchuk instability at its metamagnetic transition in strong magnetic fields.

【 授权许可】

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