低维铁基超导体中的新型磁阻态

Novel Magnetic Block States in Low-Dimensional Iron-Based Superconductors.

作者信息

Herbrych J, Heverhagen J, Patel N D, Alvarez G, Daghofer M, Moreo A, Dagotto E

机构信息

Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA.

Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

出版信息

Phys Rev Lett. 2019 Jul 12;123(2):027203. doi: 10.1103/PhysRevLett.123.027203.

DOI:10.1103/PhysRevLett.123.027203

PMID:31386537

Abstract

Inelastic neutron scattering recently confirmed the theoretical prediction of a ↑↑↓↓-magnetic state along the legs of quasi-one-dimensional iron-based ladders in the orbital-selective Mott phase (OSMP). We show here that electron doping of the OSMP induces a whole class of novel block states with a variety of periodicities beyond the previously reported π/2 pattern. We discuss the magnetic phase diagram of the OSMP regime that could be tested by neutrons once appropriate quasi-1D quantum materials with the appropriate dopings are identified.

摘要

非弹性中子散射最近证实了在轨道选择性莫特相（OSMP）中准一维铁基梯子的腿上存在↑↑↓↓磁态的理论预测。我们在此表明，OSMP的电子掺杂会诱导出一类全新的块态，其具有多种周期性，超出了先前报道的π/2模式。我们讨论了OSMP区域的磁相图，一旦确定了具有适当掺杂的合适准一维量子材料，就可以用中子进行测试。