Charge-Orbital Density Wave and Superconductivity in the Strong Spin-Orbit Coupled IrTe2:Pd
Charge-Orbital Density Wave and Superconductivity in the Strong Spin-Orbit Coupled IrTe2:Pd
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DOI：
10.1103/physrevlett.108.116402
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发表时间：
2012-03-13
影响因子：
8.6
通讯作者：
Cheong, S-W.
中科院分区：
文献类型：
--
作者：
Yang, J. J.;Choi, Y. J.;Cheong, S-W.
使用透射电子显微镜，发现 IrTe2 中类似于 262 K 的电阻率和磁化率异常伴随着 (q) over bar = (1/5, 0, -1/5) 的超晶格峰。波矢量与我们对费米面嵌套矢量的理论计算一致，表明类似于262 K的跃迁是电荷轨道密度波（DW）类型的。我们还发现，Pd 嵌入和取代都会产生 T-c 高达 3 K 的体超导性，这与 DW 以量子临界点方式竞争。
Using transmission electron microscopy, the anomalies in resistivity and magnetic susceptibility at similar to 262 K in IrTe2 are found to accompany the superlattice peaks with (q) over bar = (1/5, 0, -1/5). The wave vector is consistent with our theoretical calculation for the Fermi surface nesting vector, indicating that the similar to 262 K transition is of the charge-orbital density wave (DW) type. We also discovered that both Pd intercalation and substitution induce bulk superconductivity with T-c up to similar to 3 K, which competes with DW in a quantum critical pointlike manner.