Coexistence of Bloch Electrons and Glassy Electrons in Ca10(Ir4As8)(Fe2-xIrxAs2)5revealedby angle-resolved Photoemission Spectroscopy
Coexistence of Bloch Electrons and Glassy Electrons in Ca10(Ir4As8)(Fe2-xIrxAs2)5revealedby angle-resolved Photoemission Spectroscopy
复制标题
角分辨光电发射光谱揭示Ca10(Ir4As8)(Fe2-xIrxAs2)5中布洛赫电子和玻态电子的共存
DOI：
10.1103/physrevb.89.220508
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发表时间：
2014
影响因子：
3.7
通讯作者：
T. Mizokawa
中科院分区：
文献类型：
--
作者：
K. Sawada;D. Ootsuki,K. Kudo;D. Mitsuoka;M. Nohara;T. Noda;K. Horiba;M. Kobayashi;K. Ono;H. Kumigashira;N. L. Saini;T. Mizokawa
角分辨光电子能谱表明FeAs层中的Fe电子在带中心形成类孔费米口袋，在带角处形成类电子费米口袋，这在各种Fe基超导体中很常见. FeAs层是重电子掺杂的，并且具有相对较好的二维性。另一方面，由于与非轨道不稳定性有关的原子无序，FeAs层中的Bloch电子与FeAs层中的玻璃态电子共存，从而使FeAs层中的电子呈现金属态和玻璃态。
Angle-resolved photoemission spectroscopy ofshows that the Feelectrons in the FeAs layer form the holelike Fermi pocket at the zone center and the electronlike Fermi pockets at the zone corners as commonly seen in various Fe-based superconductors. The FeAs layer is heavily electron doped and has relatively good two dimensionality. On the other hand, the Irelectrons are metallic and glassy probably due to atomic disorder related to the Irorbital instability.exhibits a unique electronic state where the Bloch electrons in the FeAs layer coexist with the glassy electrons in thelayer.