Two Pseudogaps with Different Energy Scales at the Antinode of the High-Temperature Bi2Sr2CuO6Superconductor Using Angle-Resolved Photoemission Spectroscopy
Two Pseudogaps with Different Energy Scales at the Antinode of the High-Temperature Bi2Sr2CuO6Superconductor Using Angle-Resolved Photoemission Spectroscopy
复制标题
利用角分辨光电发射光谱研究高温 Bi2Sr2CuO6 超导体波腹处两个不同能级的赝能隙
DOI：
10.1103/physrevb.83.224509
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
and T. Takahashi
中科院分区：
文献类型：
--
作者：
K. Nakayama;T. Sato;Y.-M. Xu;Z.-H.Pan;P. Richard;H. Ding;H.-H. Wen;K. Kudo;T. Sasaki;N. Kobayashi;and T. Takahashi
我们进行了高分辨率角分辨光电子能谱的单层铜酸盐BiSrCuO澄清的赝能隙的起源。通过使用不同的光子能量，我们成功地直接观察到两个不同的赝能隙与两个不同的能量尺度共存于波腹区域：一个反映了波配对强度，而另一个具有较大的能量尺度，表明起源不同于超导。观察到的双赝能隙行为提供了一个关键，以充分理解的赝能隙现象的铜酸盐。
We performed high-resolution angle-resolved photoemission spectroscopy on single-layered cuprate BiSrCuOto clarify the origin of the pseudogap. By using various photon energies, we succeeded in directly observing two different pseudogaps with two different energy scales which coexist in the antinodal region: one reflects the-wave pairing strength while the other has a larger energy scale suggesting an origin distinct from superconductivity. The observed two-pseudogap behavior provides a key to fully understanding the pseudogap phenomena in cuprates.