Duong Pham, Soon-Gil Jung, Duc H. Tran, Tuson Park, Won Nam Kang
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https://www.earticle.net/Article/A363633
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We studied the effect of Fe ion irradiation on the upper critical field (Hc2) of 410 nm single-crystalline MgB2 thin films. The irradiation energy was fixed at 140 keV when we increased the irradiation doses from 1×1014 ion/cm2 to 4×1014 ion/cm2. We found that Hc2 significantly increase with increasing irradiation dose, despite the low irradiation energy. The enhancement of Hc2 could be explained by the reduction of electron mean free path caused by defects induced from irradiation, leading to a decrease of coherence length (ξ). We also discussed the effect of irradiation on temperature-dependent resistivity in details.
Duong Pham [ Department of Physic, Sungkyunkwan University, Suwon 16419, Republic of Korea. ]
Soon-Gil Jung [ Center for Quantum Materials and Superconductivity (CQMS) and Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea. ]
Duc H. Tran [ Faculty of Physics, VNU-University of Science, Ha Noi, Viet Nam. ]
Tuson Park [ Center for Quantum Materials and Superconductivity (CQMS) and Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea. ]
Won Nam Kang [ Department of Physic, Sungkyunkwan University, Suwon 16419, Republic of Korea ]
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