首页> 外文期刊>RSC Advances >Coupled magnetic–elastic and metal–insulator transition in epitaxially strained SrMnO3/BaMnO3 superlattices
【24h】

Coupled magnetic–elastic and metal–insulator transition in epitaxially strained SrMnO3/BaMnO3 superlattices

机译:外延应变SrMnO3 / BaMnO3超晶格中的磁-弹性和金属-绝缘体耦合跃迁

获取原文
           

摘要

The spin–phonon coupling and the effects of strain on the ground-state phases of artificial SrMnO _(3) /BaMnO _(3) superlattices were systematically investigated using first-principles calculations. The results confirm that this system has antiferromagnetic order and an intrinsic ferroelectric polarisation with the P 4 mm space group. A tensile epitaxial strain can drive the ground state to another antiferromagnetic–ferroelectric phase and then to a ferromagnetic–ferroelectric phase with the Amm 2 space group, accompanied by a change in the ferroelectric polarisation from an out-of-plane direction to an in-plane direction. In contrast, a compressive strain could induce a transition from the antiferromagnetic insulator phase to the ferromagnetic metal phase.
机译:使用第一性原理系统地研究了自旋声子耦合和应变对人造SrMnO _(3)/ BaMnO _(3)超晶格的基态相的影响。结果证实,该系统具有反铁磁序和固有的铁电极化,P 4 mm空间群。外延拉伸应变可以将基态驱动到另一个反铁磁-铁电相,然后驱动到具有Amm 2空间群的铁磁-铁电相,并伴随着铁电极化从面外方向到面内方向的变化。平面方向。相反,压缩应变可引起从反铁磁绝缘体相到铁磁金属相的转变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号