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島村 一利*; 輪島 裕樹*; 牧野 隼士*; 阿部 聡*; 芳賀 芳範; 佐藤 由昌*; 河江 達也*; 吉田 靖雄*
Japanese Journal of Applied Physics, 61(5), p.056502_1 - 056502_7, 2022/05
被引用回数:1 パーセンタイル:17.38(Physics, Applied)We have conducted precise magnetization measurements down to 500 mK using a commercial magnetometer. The gas handling system contains two sorption pumps filled with granular charcoals. He gas is pressurized up to ambient pressure for liquification at 3 K and the vapor is pumped for cooling. We demonstrate the performance of the system by observing the Meissner effect of aluminum below the superconducting transition temperature.
Kim, H.*; 吉田 靖雄*; Lee, C.-C.*; Chang, T.-R.*; Jeng, H.-T.*; Lin, H.*; 芳賀 芳範; Fisk, Z.*; 長谷川 幸雄*
Science Advances (Internet), 3(9), p.eeao0362_1 - eeao0362_5, 2017/09
被引用回数:11 パーセンタイル:62.12(Multidisciplinary Sciences)We report a first, real-space, imaging of an orbital ordered structure on a cobalt-terminated surface of the well-studied heavy fermion compound CeCoIn. Within small tip-sample distances, the cobalt atoms on a cleaved (001) surface take on dumbbell shapes alternatingly aligned in the [100] and [010] directions in scanning tunneling microscopy topographies. First-principles calculations reveal that this staggered orbital order is triggered by enhanced on-site Coulomb interaction at the surface.