@article{oai:repo.qst.go.jp:00047358,
 author = {Sun, Yue and Pyon, Sunseng and Tamegai, Tsuyoshi and Kobayashi, Ryo and Watashige, Tatsuya and Kasahara, Shigeru and Matsuda, Yuji and Shibauchi, Takasada and Kitamura, Hisashi and Ｓｕｎ Ｙｕｅ and 卞 舜生 and 為ケ井 強 and 北村 尚},
 issue = {11},
 journal = {Applied Physics Express},
 month = {Oct},
 note = {We report a comprehensive study of the effect of H+ irradiation on the critical current density Jc and vortex pinning in an FeSe single crystal. The value of Jc for FeSe is enhanced by more than a factor of 2 after 3-MeV H+ irradiation, which is explained by the introduction of point pinning centers. Vortex creep rates are found to be strongly suppressed after irradiation. Detailed analyses of the pinning energy based on collective-creep-theory and an extended Maley's method show that the H+ irradiation enhances the value of Jc before the flux creep and also reduces the size of the flux bundle, which suppresses the field dependence of Jc owing to vortex motion.},
 pages = {113102-1--113102-4},
 title = {Enhancement of critical current density and mechanism of vortex pinning in H+-irradiated FeSe single crystal},
 volume = {8},
 year = {2015}
}