论文标题
竞争的铁磁超导状态
Competing ferromagnetic superconducting states in europium-based iron pnictides
论文作者
论文摘要
在基于Europium的铁质体中，超导Fe-planes可能受到来自邻近欧盟 - 欧盟群体的Zeeman领域的影响。该场倾向于以铁磁平均值诱导旋转密度波，通过在Fulde-ferde-ferrell-Larkin-ovchinnikov相中形成超导和磁性参数的互补模式，与超导顺序共存，并共存。在这些脆弱的不均匀超导状态下，费米能量周围的硬间隙消失了，相反，它具有V形旋转固定的局部密度。不均匀的状态还与均匀的超导或均匀的铁磁状态竞争，表现出FE和EU平面中磁性的相互交织影响，旋转密度波带结构以及超导配对顺序。
In europium-based iron pnictides superconducting Fe-planes can be influenced by a Zeeman field originated from the neighboring Eu-planes. The field tends to induce spin-density waves with a ferromagnetic average which coexists with the superconducting order by forming complementary patterns of the superconducting and magnetic order parameters in a Fulde-Ferrell-Larkin-Ovchinnikov phase and a two-dimensional textured-superconducting phase. The hard gap around the Fermi energy disappears in these fragile inhomogeneous superconducting states, which features, instead, V-shaped spin-resolved local density of states. The inhomogeneous states are also competing with either a homogeneous superconducting or a homogeneous ferromagnetic state, manifesting the intertwining influences of the magnetic orders in Fe and Eu planes, the spin-density wave band structure, and the superconducting pairing order.
