Manipulation of J(eff) =3/2 states by tuning the tetragonal distortion
Manipulation of J(eff) =3/2 states by tuning the tetragonal distortion
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通过调整四方畸变来操纵 J(eff) =3/2 状态
DOI：
10.1103/physrevb.104.165150
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发表时间：
2021
影响因子：
3.7
通讯作者：
Dong Shuai
中科院分区：
文献类型：
--
作者：
Weng Yakui;Dong Shuai
自旋-轨道纠缠量子态是复合的，例如，和态，由于它们在非常规超导和拓扑态中的独特物理作用而引起了人们极大的兴趣。本文阐明了四阶畸变的关键作用，它决定了系统的基态是一个（例如，）或theone（例如，）。借由外延应变来调整四角畸变，轨道的占据权重可以被微妙地调制，与自旋轨道耦合竞争。因此，可以实现态与态之间以及不同态之间的量子相变，从而导致局域磁矩的显著变化。我们的预测指出了一个可靠的路线，工程师在这些量子材料的新功能的状态。
The spin-orbit entangled quantum states incompounds, e.g., theandstates, have attracted great interests for their unique physical roles in unconventional superconductivity and topological states. Here, the key role of tetragonal distortion is clarified, which determines the ground states ofsystems to be theone (e.g.,) or theone (e.g.,). By tuning the tetragonal distortion via epitaxial strain, the occupation weights oforbitals can be subtly modulated, competing with the spin-orbit coupling. Consequently, quantum phase transitions between thestate and thestate, as well as between differentstates, can be achieved, resulting in significant changes of local magnetic moments. Our prediction points out a reliable route to engineer new functionality ofstates in these quantum materials.