EVIDENCE FOR A SURFACE-DERIVED ELECTRONIC STATE ON YBA2CU3O6.8

被引：21

作者：

CLAESSEN, R

MANTE, G

HUSS, A

MANZKE, R

SKIBOWSKI, M

WOLF, T

FINK, J

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST TECH PHYS,W-7500 KARLSRUHE 1,GERMANY

[2] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST NUKL FESTKORPERPHYS,W-7500 KARLSRUHE 1,GERMANY

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.44.2399

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

From angle-resolved photoemission spectroscopy performed on cleaved surfaces of twinned YBa2Cu3O6.8 single crystals, wc found strong evidence for the existence of an intrinsic surface-derived electronic band in this high-temperature superconductor. It is observable only near the X (Y) point of thc Brillouin zone, showing slight k parallel-to- and almost no k perpendicular-to-dispersion and a very pronounced sensitivity to surface contamination. We discuss the relation of this state to possible crystal terminations and compare to a calculation of the surface electronic structure.

引用

页码：2399 / 2402

页数：4

共 19 条

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