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前川 禎通
no journal, ,
A. Einstein and W.J. de Haas proved experimentally the equivalence of magnetic moment and mechanical rotation in 1915. In the same year, S.J. Bernett showed that the mechanical rotation can generate a magnetic field, i.e., the so-called Bernett field, even in a body with no electric charge. These phenomena are caused by the angular momentum conservation between electron spin and mechanical rotation, which has been derived in the general relativistic quantum mechanics. We introduce various angular momenta such as mechanical and nuclear ones in spintronics and propose novel spintronics phenomena. We show that spintronics is not just a new type of electronics but provides a variety of possibilities for energy conversion, which is called "power spintronics."
酒井 宏典
no journal, ,
圧力や外部磁場、化学的置換により制御される量子臨界性は、重い電子系超伝導体と重要な関連性をもっている。系統的NMR研究により、XY型反強磁性スピン揺らぎがd波超伝導を安定化させることなどを明らかにしてきた。最近、圧力下においてCeRhSiにおけるスピン揺らぎの異方性を調べた。さらに量子臨界金属として有名なCeCoInにおける化学置換効果についても議論する。