کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8155248 | 1524814 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spin-1 J1âJ2âJ3 ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice: A bosonic approach
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spin-1 J1âJ2âJ3 ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice: A bosonic approach Spin-1 J1âJ2âJ3 ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice: A bosonic approach](/preview/png/8155248.png)
چکیده انگلیسی
We examine the phase diagram of the spin-1 J1âJ2âJ3 ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice, in which J1 is the ferromagnetic exchange interaction between nearest neighbors, J2 is the antiferromagnetic exchange interaction between next-nearest neighbors and J3 is the antiferromagnetic exchange interaction between next-next-nearest neighbors. Using the bond-operator formalism, we investigate the phase transitions between the disordered paramagnetic phase and the ordered ones. We show that the nature of the quantum phase transitions changes as the frustration parameters (J2J1, J3J1) are varied. The zero-temperature phase diagram exhibits second- and first-order transitions, depending on the energy gap behavior. Remarkably, we find a disordered nonmagnetic phase, even in the absence of a crystal field, which is suggested to be a quantum spin liquid candidate. We also depict the phase diagram at finite temperature for some values of crystal field and frustration parameters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 407, 1 June 2016, Pages 341-347
Journal: Journal of Magnetism and Magnetic Materials - Volume 407, 1 June 2016, Pages 341-347
نویسندگان
D.C. Carvalho, A.S.T. Pires, L.A.S. Mól,