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Sb
with a honeycomb network足立 匡*; Ogawa, Taiki*; 小宮山 陽太*; 須村 拓也*; Saito-Tsuboi, Yuki*; Takeuchi, Takaaki*; Mano, Kohei*; Manabe, Kaoru*; 川端 幸樹*; 今津 毅士*; et al.
Physical Review B, 111(10), p.L100508_1 - L100508_6, 2025/03
被引用回数：0 パーセンタイル：0.00(Materials Science, Multidisciplinary)Chiral superconductivity exhibits the formation of novel electron pairs that breaks the time-reversal symmetry and has been actively studied in various quantum materials in recent years. However, despite its potential to provide definitive information, effects of disorder in the crystal structure on the chiral superconductivity has not yet been clarified, and therefore the investigation using a solid-solution system is desirable. We report muon-spin-relaxation (
SR) results of layered pnictide BaPtAsSb with a honeycomb network composed of Pt and (As, Sb). We observed an increase of the zero-field SR rate in the superconducting (SC) state at the Sb end of 
, suggesting the occurrence of a spontaneous magnetic field due to the time-reversal symmetry breaking in the SC state. On the other hand, a spontaneous magnetic field was almost and completely suppressed for the As-Sb mixed samples of 
and 0.2, respectively, suggesting that the time-reversal symmetry-breaking SC state in is sensitive to disorder. The magnetic penetration depth estimated from transverse-field SR measurements at and 0.2 behaved like weak-coupling 
-wave superconductivity. These seemingly incompatible zero-field and transverse-field SR results of BaPtAsSb with could be understood in terms of chiral 
-wave superconductivity with point nodes on the three-dimensional Fermi surface.
笹田 星児*; Takahashi, Yoshihito*; Takeuchi, Keisuke*; 廣井 孝介; Su, Y. H.; 篠原 武尚; 渡辺 賢一*; 瓜谷 章*
Japanese Journal of Applied Physics, 61(4), p.046004_1 - 046004_8, 2022/03
被引用回数：0 パーセンタイル：0.00(Physics, Applied)Residual strains in a punched electrical steel sheet increase the iron loss in the steel sheet. To accurately estimate the effect of residual strain on iron loss, the residual strain distribution in a punched electrical steel sheet should be evaluated. In this study, we demonstrated the two- dimensional imaging of the residual strain distribution in a punched electrical steel sheet using the neutron Bragg-edge transmission imaging method. To improve the accuracy of strain measurement with minimal deterioration of spatial resolution, we applied a process of superposing many specimen images. The tensile strain near the punched edge and the compressive strain inside the core were experimentally confirmed using this method. Finally, the neutron Bragg-edge imaging results and those obtained from kernel average misorientation map using electron backscattered diffraction were compared to verify the validity of the proposed method.
CoLokotko, T.*; Leblond, S.*; Lee, J.*; Doornenbal, P.*; Obertelli, A.*; Poves, A.*; Nowacki, F.*; 緒方 一介*; 吉田 数貴; Authelet, G.*; et al.
Physical Review C, 101(3), p.034314_1 - 034314_7, 2020/03
被引用回数：12 パーセンタイル：74.01(Physics, Nuclear)中性子過剰核であるCoに対する(
)ノックアウト反応が理化学研究所RIBFで測定された。
coincidenceの方法で準位構造が決定され、測定された包括的断面積および排他的断面積から暫定的ではあるがスピン・パリティが決定された。殻模型計算との比較により、Coの低励起状態には球形核と変形核が共存することが示唆された。
Ni from the (
,
) reactionElekes, Z.*; Kripk
, 
*; Sohler, D.*; Sieja, K.*; 緒方 一介*; 吉田 数貴; Doornenbal, P.*; Obertelli, A.*; Authelet, G.*; 馬場 秀忠*; et al.
Physical Review C, 99(1), p.014312_1 - 014312_7, 2019/01
被引用回数：12 パーセンタイル：71.31(Physics, Nuclear)(,)反応によるNiの核構造の探索実験を行った。Lenzi, Nowacki, Poves, Sieja相互作用を用いた殻模型計算では実験結果を説明しうる陽子空孔状態が得られており、理論的な断面積計算は実験値とよい一致を与えた。実験で得られたすべての状態を理論的に一意に決定することはできなかったが、過去の実験結果と同様にNi同位体でのZ = 28の大きなshell gapを示す結果が得られた。
浅田 隆; Honda, Shun-ichi*; Takeuchi, Mamoru*
PNC TN341 83-11, 16 Pages, 1983/02
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