Non-uniform doping across the Fermi surface of NbS$_2$ intercalates

Details Non-uniform doping across the Fermi surface of NbS$_2$ intercalates Non-uniform doping across the Fermi surface of NbS$_2$ intercalates

2006-11-08

arxiv.org/abs/cond-mat/0611215v3

Eur. Phys. J. B 57, 385 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1140/epjb/e2007-00188-1

Magnetic ordering of the first row transition metal intercalates of NbS$_2$ due to coupling between the conduction electrons and the intercalated ions has been explained in terms of Fermi surface nesting. We use angle-resolved photoelectron spectroscopy to investigate the Fermi surface topology and the valence band structure of the quasi-two-dimensional layer compounds Mn$_{1/3}$NbS$_2$ and Ni$_{1/3}$NbS$_2$. Charge transfer from the intercalant species to the host layer leads to non-uniform, pocket selective doping of the Fermi surface. The implication of our results on the nesting properties are discussed.

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