@article{Yasui2017,
title = {Little-Parks oscillations with half-quantum fluxoid features in Sr_{2}RuO_{4} microrings},
author = {Y Yasui and K Lahabi and M S Anwar and Y Nakamura and S Yonezawa and T Terashima and J Aarts and Y Maeno},
doi = {10.1103/PhysRevB.96.180507},
year = {2017},
date = {2017-11-27},
journal = {Physical Review B},
volume = {96},
number = {18},
abstract = {In a microring of a superconductor with a spin-triplet equal-spin pairing state, a fluxoid, a combined object of magnetic flux and circulating supercurrent, can penetrate as half-integer multiples of the flux quantum. A candidate material to investigate such half-quantum fluxoids is Sr 2 RuO 4 . We fabricated Sr 2 RuO 4 microrings using single crystals and measured their resistance behavior under magnetic fields controlled with a three-axis vector magnet. Proper Little-Parks oscillations in the magnetovoltage as a function of an axially applied field, associated with fluxoid quantization, are clearly observed using bulk single-crystalline superconductors. We then performed magnetovoltage measurements with additional in-plane magnetic fields. By carefully analyzing both the voltages V+ (V-) measured at positive (negative) current, we find that, above an in-plane threshold field of about 10 mT, the magnetovoltage maxima convert to minima. We interpret this behavior as the peak splitting expected for the half-quantum fluxoid states. © 2017 American Physical Society.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
