TY - JOUR
T1 - Nesting and instability in a two-dimensional system
AU - Lin, F.
AU - Chen, X. B.
AU - Fu, R. T.
AU - Sun, X.
AU - Kawazoe, Y.
PY - 1998/4
Y1 - 1998/4
N2 - Different from one-dimensional systems, nesting in two-dimensional (2D) systems is not perfect but some 2D systems still have Peierls instability and hidden nesting. This paper shows that the next-nearest neighbor (NNN) hopping which controls the nesting deviation, heavily suppresses the Peierls instability. There is a critical value for the NNN hopping, beyond which the Peierls instability is destroyed and the hidden nesting is lost. The impact of such change to other phase transitions is discussed.
AB - Different from one-dimensional systems, nesting in two-dimensional (2D) systems is not perfect but some 2D systems still have Peierls instability and hidden nesting. This paper shows that the next-nearest neighbor (NNN) hopping which controls the nesting deviation, heavily suppresses the Peierls instability. There is a critical value for the NNN hopping, beyond which the Peierls instability is destroyed and the hidden nesting is lost. The impact of such change to other phase transitions is discussed.
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U2 - 10.1002/(sici)1521-3951(199804)206:2<559::aid-pssb559>3.0.co;2-%23
DO - 10.1002/(sici)1521-3951(199804)206:2<559::aid-pssb559>3.0.co;2-%23
M3 - Article
AN - SCOPUS:0032400330
SN - 0370-1972
VL - 206
SP - 559
EP - 565
JO - Physica Status Solidi (B): Basic Research
JF - Physica Status Solidi (B): Basic Research
IS - 2
ER -