薄膜
弱局部化
凝聚态物理
脉冲激光沉积
材料科学
焦绿石
相(物质)
磁电阻
外延
磁性
电阻率和电导率
磁场
纳米技术
物理
图层(电子)
量子力学
作者
X. J. Wu,Zhen Wang,Zhaoqing Ding,Zeguo Lin,Mingyu Yang,Minghui Gu,Meng Meng,Fang Yang,Xiaoran Liu,Jiandong Guo
摘要
Thin films of the pyrochlore iridates along the [111] direction have drawn significant attention to investigate exotic correlated topological phenomena. Here, we report the fabrication of Eu2Ir2O7 thin films via reactive solid phase epitaxy using the pulsed laser deposition technique. We mainly focus on the transport properties of the films below the magnetic phase transition at 105 K. Analyses on the temperature and the field dependences of resistivity unveil the presence of weak antilocalization, a characteristic signature of the Weyl semimetallic state that has been “buried” by magnetism. Moreover, it is noteworthy that the contribution from many-body interactions in Eu2Ir2O7 thin films is enhanced at lower temperatures and competes with the weak antilocalization effect, and eventually drives the crossover to weak localization at 2 K.
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