标题： 地磁对CeRu2中101Ru核四极共振测量的影响 显示英文标题

标题： Effect of Geomagnetism on 101Ru Nuclear Quadrupole Resonance Measurements of CeRu2

摘要： 我们对s波超导体CeRu2进行了101Ru核四极矩共振（NQR）测量，在+-1/2 <-> +-3/2跃迁中观察到了自旋回波幅度的振荡行为，但在+-3/2 <-> +-5/2跃迁中没有观察到。 在超导态或磁屏蔽环境中，这种调制消失，这表明存在地磁场的影响。 我们的结果表明，在+-1/2 <-> +-3/2跃迁处的NQR自旋回波衰减曲线对弱磁场敏感。 显示英文摘要

摘要： We performed 101Ru nuclear quadrupole resonance (NQR) measurements on the s-wave superconductor CeRu2 and found oscillatory behavior in the spin-echo amplitude at the +-1/2 <-> +-3/2 transitions but not at the +-3/2 <-> +-5/2 transitions. The modulation disappears in the superconducting state or in a magnetic shield, which implies a geomagnetic field effect. Our results indicate that the NQR spin-echo decay curve at the +-1/2 <-> +-3/2 transitions is sensitive to a weak magnetic field.