Detection of Individual Vortices in Micron-Size Sr2RuO4 Rings by Phase-Locked Cantilever Magnetometry

Joonho Jang; Raffi Budakian; Yoshiteru Maeno

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arxiv 0908.2673 v2 pith:O2FGWRWO submitted 2009-08-19 cond-mat.supr-con cond-mat.mes-hall

Detection of Individual Vortices in Micron-Size Sr2RuO4 Rings by Phase-Locked Cantilever Magnetometry

Joonho Jang , Raffi Budakian , Yoshiteru Maeno This is my paper

classification cond-mat.supr-con cond-mat.mes-hall

keywords vorticesappliedcantileverindividualmagneticmagnetometrymomentrings

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We describe a feedback-based dynamic cantilever magnetometry technique capable of achieving high magnetic moment sensitivity with low applied fields. Using this technique, we have observed periodic entry of vortices into mesoscopic Sr2RuO4 rings. The quantized jump in the magnetic moment of the particle produced by individual vortices was measured with a resolution of 7x10^-16 e.m.u. at an applied field of 1 Oe.

Detection of Individual Vortices in Micron-Size Sr2RuO4 Rings by Phase-Locked Cantilever Magnetometry

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