In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 36, No. 5R ( 1997-05-01), p. 2863-
Abstract:
We measured the quantum-efficiency (QE) dependence of the spin polarization of photoemission from a GaAs-AlGaAs superlattice over a wide range of QE values. In the QE range from 10 -4 to 10 -9 , a change in the polarization from 76% to 48% was observed at a wavelength of 778.5 nm. The maximum polarization at 778.5 nm was observed at a QE one tenth of the maximum value. We also observed a similar dependence at other wavelengths. Such a behavior suggests that the vacuum level and surface potential barrier play important roles concerning the spin polarization of photoemission.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.36.2863
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1997
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
Permalink