Double metamagnetic transition in the bilayer ruthenate Sr 3 Ru 2 O 7
Double metamagnetic transition in the bilayer ruthenate Sr 3 Ru 2 O 7
复制标题
双层钌酸盐Sr 3 Ru 2 O 7 中的双变磁转变
DOI：
10.1103/physrevb.67.024432
复制
发表时间：
2003
影响因子：
3.7
通讯作者：
T. Osada
中科院分区：
文献类型：
--
作者：
E. Ohmichi;Y. Yoshida;S. Ikeda;N. V. Mushunikov;T. Goto;T. Osada
通过磁化强度和磁矩测量，我们发现了Sr3Ru2O7的双变磁相变。除了已报道的超磁转变[R.S.Perry，L.M.Galvin，S.A.Grigera，L.Capogna，A.J.Schofield，A.P.Mackenzie，M.Chiao，S.R.Julian，S.I.Ikeda，S.Nakatsuji，Y.Maeno，和C.Pfleider，Phys.莱特牧师。86,2661(2001)]，在低于2K的高场区开始出现意想不到的第二次相变，表现出面间和面内磁场方向之间更强的各向异性。我们将在自旋涨落理论的基础上讨论Sr3Ru2O7的超磁性以及第二次超磁转变的可能来源。
We report a double metamagnetic transition in Sr 3 Ru 2 O 7 detected by magnetization and magnetic torque measurements. In addition to the reported metamagnetic transition [R. S. Perry, L. M. Galvin, S. A. Grigera, L. Capogna, A. J. Schofield, A. P. Mackenzie, M. Chiao, S. R. Julian, S. I. Ikeda, S. Nakatsuji, Y. Maeno, and C. Pfleiderer, Phys. Rev. Lett. 86, 2661 (2001)], an unexpected second transition started to appear in the higher-field region below 2 K, exhibiting stronger anisotropy between inter- and intraplane field directions. We shall discuss metamagnetism of Sr 3 Ru 2 O 7 based upon spin-fluctuation theory as well as possible origins of the second metamagnetic transition.