LASER-INDUCED BAND-BENDING VARIATION ON ROOM-TEMPERATURE CDTE(110)1X1 SURFACES OBSERVED IN PHOTOEMISSION AND THROUGH THE FRANZ-KELDISH EFFECT IN SURFACE DIFFERENTIAL REFLECTIVITY

被引：8

作者：

CRICENTI, A ^{[1
]}

ORLOWSKI, BA ^{[1
]}

机构：

[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.51.2322

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A laser-induced band-bending variation on ultrahigh vacuum cleaved CdTe(110)1×1 surfaces kept at room temperature has been observed both in angle-resolved photoelectron spectroscopy (ARPES) and, through the Franz-Keldish (FK) effect, in surface-differential reflectivity. Through ARPES spectra, the shift of the Fermi level, between the sample obscured and illuminated with an Ar+ laser power of 500 mW has been determined to be 0.2 eV. The FK effect has been observed at the E0 bulk critical point and studied as a function of laser power, showing a linear increase in its oscillation amplitude up to a power of 400 mW. Upon switching off the laser, the FK effect disappears exponentially with a time constant of about 1300 s. A surface photovoltage induced by the helium lamp has also been observed. © 1995 The American Physical Society.

引用

页码：2322 / 2325

页数：4

共 18 条

[1] SURFACE PHOTOVOLTAGE EFFECTS IN PHOTOEMISSION FROM METAL-GAP(110) INTERFACES - IMPORTANCE FOR BAND-BENDING EVALUATION [J].