REVERSIBLE EU2+[--]EU3+ TRANSITIONS AT EU-SI INTERFACES

被引：6

作者：

HENLE, WA ^{[1
]}

RAMSEY, MG ^{[1
]}

NETZER, FP ^{[1
]}

HORN, K ^{[1
]}

机构：

[1] MAX PLANCK GESELL,FRITZ HABER INST,W-1000 BERLIN 33,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1991年 / 58卷 / 15期

关键词：

D O I：

10.1063/1.105139

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Valence switching at Eu-Si interfaces is demonstrated by resonant photoemission during repeated oxidation-reduction cycles performed by room-temperature O2 exposure and mild heating. The Eu2+ <--> Eu3+ transitions are accompanied by Fermi level switching associated with changes in the stoichiometry of the surface heterostructure. The ability to cycle between two well-defined magnetic states at a surface may be attractive in technological applications.

引用

页码：1605 / 1607

页数：3

共 14 条

[1] 2 VALENCE STATES IN OXIDIZED EUROPIUM METAL [J].

BARTH, J ;

GERKEN, F ;

SCHMIDTMAY, J ;

FLODSTROM, A ;

JOHANSSON, LI .

CHEMICAL PHYSICS LETTERS, 1983, 96 (05) :532-536

[2]

Bondar I. A, 1967, IAN SSSR NEORG MATER, V3, P2034

[3]

BRILLSON LJ, 1988, CHEM PHYSICS SOLID S, V5, pCH4

[4]

GERKEN F, 1982, AIP C P, V94, P602

[5]

Goldschmidt Jr Z B, 1978, HDB PHYSICS CHEM RAR, V1, P1

[6]

HENLE W, UNPUB

[7] REACTIONS AT THE GD-SI(111)7X7 INTERFACE - PROMOTION OF SI OXIDATION [J].

HENLE, WA ;

RAMSEY, MG ;

NETZER, FP ;

CIMINO, R ;

BRAUN, W ;

WITZEL, S .

PHYSICAL REVIEW B, 1990, 42 (17) :11073-11078

[8]

HINKEL V, 1988, THESIS FREIE U BERLI

[9]

HOFMANN R, UNPUB

[10] OXYGEN-CHEMISORPTION AND OXIDE FORMATION ON SI(111) AND SI(100) SURFACES [J].

HOLLINGER, G ;

HIMPSEL, FJ .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1983, 1 (02) :640-645

← 1 2 →