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

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arxiv 1510.00107 v1 pith:TDJUOEBR submitted 2015-10-01 cond-mat.supr-con

Masahiro Manago , Kenji Ishida , Tatsuma D. Matsuda , Yoshichika Ōnuki This is my paper · ORCID
classification cond-mat.supr-con
keywords transitionsceru2effectfieldmagneticmeasurementsnuclearquadrupole
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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.

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