Abstract

We apply the Popov-Fedotov formalism for investigating magnetic properties of the spin S = 1 Heisenberg antiferomagnetic (HAF) on a Bravais lattice. Mapping spin-1 lattice systems on three-component auxiliary fermions with imaginary chemical potential and transforming to a local coordinate system allow us to express a sublattice magnetization, free energy and other thermodynamical quantities in unique forms for different lattice structures in various magnetically ordered phases. We compare them with the results obtained when the local constraint is disregarded. A comparison with the case of S = 1/2 is also discussed.

Details

Title
Magnetic order of spin S = 1 antiferromagnetic quantum Heisenberg systems on a Bravais lattice: exact local constraint
Author
Pham Thi Thanh Nga 1 ; Nguyen, Toan Thang 2 

 Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Vietnam 
 Institute of Physics, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam 
Publication year
2017
Publication date
Jun 2017
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2574643984
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.