J Yoshida, H Ando, N Kokubo. Flux-flow instability in 2H-NbSe2 superconducting thin crystals stamped on SiO2/Si substrates. J. Phys.: Conf. Ser. 2018. 969. 1. 012073-1-012073-6
M Mitsuishi, N Kokubo, K Kitano, S Okayasu, T Nojima, T Sasaki. Direct observation of magnetic flux and interstitial vortices in perforated mesoscopic squares of superconducting films. J. Phys.: Conf. Ser. 2018. 969. 012074-1-012074-6
N. Sohara, A. Ochi, E. Murakami, K. Ienaga, S. Kaneko, N. Kokubo, S. Okuma. Vortex states near absolute zero in a weak-pinning amorphous Mo x Ge1-x film probed by pulsed mode-locking resonance. Journal of Physics: Conf. Series. 2017. 871. 12022