KEY FEATURES IN THE MEASURED BAND-STRUCTURE OF BI2SR2CACU2O8+DELTA - FLAT BANDS AT E(F) AND FERMI-SURFACE NESTING
KEY FEATURES IN THE MEASURED BAND-STRUCTURE OF BI2SR2CACU2O8+DELTA - FLAT BANDS AT E(F) AND FERMI-SURFACE NESTING
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DOI：
10.1103/physrevlett.71.2781
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发表时间：
1993-10-25
影响因子：
8.6
通讯作者：
SPICER, WE
中科院分区：
文献类型：
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作者：
DESSAU, DS;SHEN, ZX;SPICER, WE
Bi2Sr2CaCu2O8+δ 的近 E(F) 电子结构和费米面已通过角分辨光发射绘制出来。测量的能带结构的主要特征是（1）非常接近E（F）的平坦CuO2衍生能带的扩展区域和（2）费米表面嵌套的强烈倾向。将这些数据与其他铜酸盐超导体的数据进行比较分析表明，这些特征可能是 p 型铜酸盐的许多异常物理性质的原因，而这些特征的缺乏可能与 n 型铜酸盐更“正常”的物理性质有关。
The near-E(F) electronic structure and Fermi surface of Bi2Sr2CaCu2O8+delta have been mapped out with angle-resolved photoemission. Key features of the measured band structure are (1) an extended region of flat CuO2 derived bands very near E(F) and (2) a strong propensity for Fermi surface nesting. Comparative analysis of these data with those from other cuprate superconductors suggests that these features may be responsible for many of the anomalous physical properties of the p-type cuprates, while the absence of these features may be related to the more ''normal'' physical properties of the n types.