scholarly journals Ground-state properties, excitation spectra, and phase transitions in theS=12andS=32bilayer Heisenberg models on the honeycomb lattice

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
J. Oitmaa ◽  
R. R. P. Singh
Keyword(s):  
Phase Transitions ◽  
Ground State ◽  
Honeycomb Lattice ◽  
Excitation Spectra ◽  
Ground State Properties ◽  
Heisenberg Models

scholarly journals Excitation spectra and ground state properties of the layered spin-12frustrated antiferromagnetsCs2CuCl4andCs2CuBr4

2007 ◽  
Vol 75 (17) ◽  
Author(s):  
John O. Fjærestad ◽  
Weihong Zheng ◽  
Rajiv R. P. Singh ◽  
Ross H. McKenzie ◽  
Radu Coldea
Keyword(s):  
Ground State ◽  
Excitation Spectra ◽  
Ground State Properties ◽  
Layered Spin

scholarly journals Ground-state properties of the K−Γ model on a honeycomb lattice

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
Takuto Yamada ◽  
Takafumi Suzuki ◽  
Sei-ichiro Suga
Keyword(s):  
Ground State ◽  
Honeycomb Lattice ◽  
Ground State Properties

GROUND-STATE PROPERTIES OF BILAYER ν=2 QUANTUM HALL STATES

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3713-3716 ◽  
Author(s):  
YUICHI SHIMODA ◽  
TATSUYA NAKAJIMA ◽  
ANJU SAWADA
Keyword(s):  
Ground State ◽  
Energy Region ◽  
Quantum Hall ◽  
Exact Diagonalization ◽  
Excitation Spectra ◽  
Hartree Fock ◽  
Quantum Hall States ◽  
Ground State Properties ◽  
Tunneling Energy ◽  
Hall States

We construct a Hartree-Fock-Bogoliubov (HFB) Hamiltonian Haldane-sphere and study excitation spectra and ground-state properties in bilayer ν=2 QH systems. It is found that the HFB approximation can systematically give SU (2) symmetrical excitation spectra spectra well agree with those from exact diagonalization calculations in large tunneling-energy region. In this region, has been considered to be a pseudospin-squeezed ground state is favored theory.

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