Strong correlation effects in the (3 x 3) charge density wave phase of Sn/Ge(111)

被引：61

作者：

Goldoni, A ^{[1
]}

Modesti, S ^{[1
]}

机构：

[1] UNIV TRIESTE,DIPARTMENTO FIS,I-34127 TRIESTE,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.79.3266

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Angle resolved photoemission spectra of Sn/Ge(111)-alpha phase show a transition from a dispersive state at 295 K in the metallic (root 3 X root 3) phase to a state with negligible momentum dispersion in the (3 x 3) charge density wave (CDW) phase at 110 K. A depletion of density of states at the Fermi level is observed in photoemission and electron energy loss spectra at 110 K. These effects and the splitting of the Sn p(z) band at 110 K point to correlation effects as the cause of the transition to the CDW state.

引用

页码：3266 / 3269

页数：4

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