期刊
PHYSICAL REVIEW B
卷 100, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.081402
关键词
-
资金
- Office of Naval Research [N00014-17-1-2884]
- U.S. Department of Energy through the University of Minnesota Center for Quantum Materials [DE-SC-0016371]
- National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) [ECCS-1542202]
- NSF through the MRSEC program [DMR-1420013]
Quantum interference between time-reversed electron paths in two dimensions (2D) leads to the well-known weak localization correction to resistance. If spin-orbit coupling is present, the resistance correction is negative, termed weak antilocalization (WAL). Here, we report the observation of WAL coexisting with exchange coupling between itinerant electrons and localized magnetic moments. We use low-temperature magnetotransport measurements to investigate the quasi-two-dimensional, high-electron-density interface formed between SrTiO3 and the antiferromagnetic Mott insulator NdTiO3. As the magnetic field angle is gradually tilted away from the sample normal, the data reveal the interplay between strong k-cubic Rashba-type spin-orbit coupling and a substantial magnetic exchange interaction from local magnetic regions. The resulting quantum corrections to the conduction are in excellent agreement with existing models and allow sensitive determination of the small magnetic moments (22 mu(B) on average), their magnetic anisotropy, and mutual coupling strength. This effect is expected to arise in other 2D magnetic materials systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据