Contest between surface resonances and surface states at 3d ferromagnets
Contest between surface resonances and surface states at 3d ferromagnets
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DOI：
10.1209/epl/i2002-00145-8
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发表时间：
2002-08-01
期刊：
影响因子：
--
通讯作者：
Donath, M
中科院分区：
文献类型：
--
作者：
Braun, J;Donath, M
费米能级附近的带铁磁体的表面电子结构受磁性 d 带的强烈影响。对 Ni、Co 和 Fe 的密堆积表面的比较研究表明，随着 d 带影响的增加，表面共振在表面态中占主导地位。我们的理论分析区分了表面态和共振，从而提供了铁磁体表面相关光谱特征的系统学。这解决了文献中长期存在的有时相互矛盾（逆）光电发射结果的表面态难题。
The surface electronic structure of band ferromagnets in the vicinity of the Fermi level is strongly influenced by the magnetic d bands. A comparative study of the closed-packed surfaces of Ni, Co, and Fe shows that surface resonances dominate over surface states with increasing d-band influence. Our theoretical analysis distinguishes between surface states and resonances thereby providing a systematics of surface-related spectral features at ferromagnets. This solves the long-standing surface-state puzzle in the literature of sometimes contradicting (inverse) photoemission results.