Fermi Surface and Interlayer Transport in the Two-Dimensional Magnetic Organic Conductor (Me-3,5-DIP)[Ni(dmit)_2]_2
Fermi Surface and Interlayer Transport in the Two-Dimensional Magnetic Organic Conductor (Me-3,5-DIP)[Ni(dmit)_2]_2
复制标题
二维磁性有机导体(Me-3,5-DIP)[Ni(dmit)_2]_2中的费米表面和层间输运
DOI：
10.1103/physrevb.83.165129
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发表时间：
2011
影响因子：
3.7
通讯作者：
R.Kato
中科院分区：
文献类型：
--
作者：
K.Hazama;S.Uji;Y.Takahide;M.Kimata;H.Satsukawa;A.Harada;T.Terashima;Y.Kosaka;H.M.Yamamoto;R.Kato
对磁性有机导体 (Me-3,5-DIP)[Ni(dmit)] 进行了低温高磁场下的电阻和磁扭矩测量，以研究电子态。该导体包含两种类型的 Ni(dmit)]阴离子层，即层 I 和 II。 Shubnikov-de Haas 和角相关磁阻振荡清楚地表明，II 层中存在二维费米面，其自旋与 I 层中的局域自旋强耦合。当磁场平行于各层施加时，层间电阻在 T 处表现出急剧的最小值，然后在较高场处缓慢振荡。最小值可以通过层间隧道中场相关磁势和动量偏移的综合效应来解释。慢振荡的机制尚不清楚。
Resistance and magnetic torque measurements at low temperatures under high magnetic fields have been performed for a magnetic organic conductor (Me-3,5-DIP)[Ni(dmit)]to investigate the electronic state. This conductor contains two types of Ni(dmit)]anion layers, layers I and II. Shubnikov-de Haas and angular-dependent magnetoresistance oscillations clearly show that there exists a two-dimensional Fermi surface in layer II, whose spins are strongly coupled with the localized spins in layer I. When the magnetic field is applied parallel to the layers, the interlayer resistance shows a sharp minimum atT and then slow oscillation at higher fields. The minimum is explained by the combined effect of the field-dependent magnetic potential and momentum shift in the interlayer tunneling. The mechanism of the slow oscillation is not clarified yet.