Charge-density-wave instabilities in a multisubband quasi-one-dimensional electron system

1995 ◽  
Vol 51 (12) ◽  
pp. 7407-7411 ◽  
Author(s):  
L. Wang ◽  
A. R. Bishop
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hanqin Ding ◽  
Yan Xu ◽  
Weiting Chen

AbstractThe one-dimensional antiferromagnetic correlated electron system described by the unusual t–U–J model with alternating on-site interactions at odd ($$U_o$$ U o ) and even ($$U_e$$ U e ) sites is studied analytically. At weak coupling, the use of bosonization and renormalization-group techniques helps to obtain ground-state phase diagram. At quarter filling, the unequal on-site repulsion ($$U_e\ne U_o$$ U e ≠ U o ) causes the occurrence of umklapp processes and the generation of a charge excitation gap. Contrary to the usual case ($$U_e=U_o$$ U e = U o ), the system is not metallic but insulating. For $$U_e+U_o<2J$$ U e + U o < 2 J , the system is in a spin-gapped phase with charge-density-wave (CDW) instability; for $$U_e+U_o\ge 2J$$ U e + U o ≥ 2 J , the system is in a spin-gapless phase characterized by the coexistence of both CDW and spin-density-wave (SDW) instabilities, where the SDW correlation dominates over the CDW one.


1993 ◽  
Vol 56 (2-3) ◽  
pp. 2605-2610 ◽  
Author(s):  
P. Foury ◽  
J.P. Pouget ◽  
Z.S. Teweldemedhin ◽  
E. Wang ◽  
M. Greenblatt

2013 ◽  
Vol 183 (1) ◽  
pp. 33-54 ◽  
Author(s):  
Vadim Ya. Pokrovskii ◽  
Sergey G. Zybtsev ◽  
Maksim V. Nikitin ◽  
Irina G. Gorlova ◽  
Venera F. Nasretdinova ◽  
...  

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Alexeï Bosak ◽  
Sofia-Michaela Souliou ◽  
Clément Faugeras ◽  
Rolf Heid ◽  
Maciej R. Molas ◽  
...  

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