Theory of charge and spin ordering in the nickelates - Physics ...
Theory of charge and spin ordering in the nickelates - Physics ...
Theory of charge and spin ordering in the nickelates - Physics ...
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Hubbard Model<br />
A m<strong>in</strong>imal model to consider is<br />
H = ij;ab<br />
t ab<br />
ij c † iaα c jbα + i<br />
Un 2 i − J( S i ) 2<br />
B<strong>and</strong> energy<br />
(hopp<strong>in</strong>g)<br />
Coulomb<br />
Hund’s<br />
exchange<br />
vs