MOTT INSULATING GROUND-STATE ON A TRIANGULAR SURFACE LATTICE

Authors
WEITERING HH SHI X JOHNSON PD CHEN J DINARDO NJ KEMPA K
Citation
Hh. Weitering et al., MOTT INSULATING GROUND-STATE ON A TRIANGULAR SURFACE LATTICE, Physical review letters, 78(7), 1997, pp. 1331-1334
Citations number
26
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
7
Year of publication
1997
Pages
1331 - 1334
Database
ISI
SICI code
0031-9007(1997)78:7<1331:MIGOAT>2.0.ZU;2-I
Abstract
Momentum-resolved direct and inverse photoemission spectra of the K/Si (111)-(root 3 x root 3)R30 degrees-B interface reveals the presence of strongly localized surface states, The K overlayer remains nonmetalli c up to the saturation coverage. This system most likely presents the first experimental realization of a frustrated spin 1/2 Heisenberg ant iferromagnet on a two-dimensional triangular lattice.