Direct evidence for hidden one-dimensional Fermi surface of hexagonal K 0.25 WO 3
Direct evidence for hidden one-dimensional Fermi surface of hexagonal K 0.25 WO 3
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DOI：
10.1103/physrevb.77.245120
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发表时间：
2008-06
影响因子：
3.7
通讯作者：
S. Raj;Toshihiro Sato;S. Souma;Tetsuo Takahashi;D. Sarma;P. Mahadevan;J. Campuzano;M. Greenblatt;W. Mccarroll
中科院分区：
文献类型：
--
作者：
S. Raj;Toshihiro Sato;S. Souma;Tetsuo Takahashi;D. Sarma;P. Mahadevan;J. Campuzano;M. Greenblatt;W. Mccarroll
用高分辨角分辨光电子能谱（ARPES）研究了六方钾钨青铜的电子结构。实验确定的能带结构解决了长期存在的困惑，在这个六角青铜的异常输运性质。我们发现，ARPES推导的费米面是隐藏的一维（1D）带的后果，在良好的协议与计算的费米面。这些结果表明，在电阻率的高温异常起源于可能的电荷密度波的形成与隐藏的一维费米面。
The electronic structure of hexagonal potassium tungsten bronzehas been investigated by high-resolution angle-resolved photoemission spectroscopy (ARPES). The experimentally determined band structure resolves the long-standing puzzles concerning the anomalous transport properties in this hexagonal bronze. We find that the ARPES-derived Fermi surface is the consequence of hidden one-dimensional (1D) bands, in good agreement with the calculated Fermi surface. These results indicate that the high-temperature anomaly in the electrical resistivity originates in the possible charge-density-wave formation associated with the hidden 1D Fermi surfaces.