Energy gap of the spin density wave at the Cr(110) surface

被引：8

作者：

Schäfer, J ^{[1
]}

Rotenberg, E

Kevan, SD

Blaha, P

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[2] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[3] Vienna Tech Univ, Inst Phys & Theoret Chem, A-1060 Vienna, Austria

来源：

SURFACE SCIENCE | 2000年 / 454卷 / 454期

关键词：

chromium; density functional calculations; magnetic phenomena (cyclotron resonance; phase transitions; etc.); magnetic surfaces; photoelectron spectroscopy;

D O I：

10.1016/S0039-6028(00)00248-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Angle resolved photoemission is used to directly monitor the energy gap of the spin density wave of Cr at a (110) surface. Density functional calculations, including a Fermi surface contour, predict an energy gap in the surface proximity. Surface states are identified, and a near-surface gap of similar to 200 meV at room temperature is found, using spectroscopy, extending above the Fermi level. The gap exhibits an increased critical temperature of similar to 440 K and extends isotropically around the Gamma point. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：885 / 890

页数：6

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