scholarly journals Frustrated honeycomb-lattice bilayer quantum antiferromagnet in a magnetic field: Unconventional phase transitions in a two-dimensional isotropic Heisenberg model

2017 ◽  
Vol 95 (9) ◽  
Author(s):  
Taras Krokhmalskii ◽  
Vasyl Baliha ◽  
Oleg Derzhko ◽  
Jörg Schulenburg ◽  
Johannes Richter
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
Heisenberg Model ◽  
Honeycomb Lattice ◽  
Two Dimensional ◽  
Quantum Antiferromagnet

Phase transitions in the Heisenberg model on a layered triangular lattice in a magnetic field

2021 ◽  
pp. 1-10
Author(s):  
Akai Murtazaev ◽  
Magomedzagir Badiev ◽  
Magomedsheykh Ramazanov ◽  
Magomed Magomedov
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
Triangular Lattice ◽  
Heisenberg Model

scholarly journals SCHWINGER-BOSON STUDIES OF THE SINGLE HOLE MOTION IN A 2D QUANTUM ANTIFERROMAGNET

1994 ◽  
Vol 08 (27) ◽  
pp. 3843-3858
Author(s):  
C.Q. WU ◽  
Z.B. SU ◽  
L. YU
Keyword(s):  
Heisenberg Model ◽  
Quantum Spin ◽  
Spin Fluctuations ◽  
Energy Separation ◽  
Antiferromagnetic Order ◽  
Two Dimensional ◽  
Equal Footing ◽  
Anisotropic Heisenberg Model ◽  
Single Hole ◽  
Quantum Antiferromagnet

Within the Schwinger-boson approach for the t-J model, the single hole problem in a two-dimensional quantum antiferromagnet is studied by using the quantum Bogoliubovde Gennes formalism which treats the distortion of the spin background and quantum spin fluctuations on an equal footing. Several self-trapped localized hole states are found in the distorted spin-background as in the case of an anisotropic Heisenberg model. These localized hole states survive at finite temperatures when the antiferromagnetic order becomes short-ranged. The energy separation between the two lowest states is reduced by considering the spin-background distortion, but it remains finite.

Phase diagram of the two-dimensional quantum antiferromagnet in a magnetic field

2006 ◽  
Vol 99 (8) ◽  
pp. 08H503 ◽  
Author(s):  
Alessandro Cuccoli ◽  
Giacomo Gori ◽  
Ruggero Vaia ◽  
Paola Verrucchi
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Two Dimensional ◽  
Quantum Antiferromagnet

scholarly journals Field-driven phase transitions in a quasi-two-dimensional quantum antiferromagnet

2007 ◽  
Vol 9 (2) ◽  
pp. 31-31 ◽  
Author(s):  
M B Stone ◽  
C Broholm ◽  
D H Reich ◽  
P Schiffer ◽  
O Tchernyshyov ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Two Dimensional ◽  
Quantum Antiferromagnet
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