کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1863757 | 1037679 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The spin-1 two-dimensional J1-J2 Heisenberg antiferromagnet on a triangular lattice
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The spin-1 two-dimensional J1-J2 Heisenberg antiferromagnet on a triangular lattice The spin-1 two-dimensional J1-J2 Heisenberg antiferromagnet on a triangular lattice](/preview/png/1863757.png)
چکیده انگلیسی
The spin-1 Heisenberg antiferromagnet on a triangular lattice with the nearest- and next-nearest-neighbor couplings, J1=(1âp)J and J2=pJ, J>0, is studied in the entire range of the parameter p. Mori's projection operator technique is used as a method which retains the rotation symmetry of spin components and does not anticipate any magnetic ordering. For zero temperature four second-order phase transitions are observed. At pâ0.038 the ground state is transformed from the long-range ordered 120° spin structure into a state with short-range ordering, which in its turn is changed to a long-range ordered state with the ordering vector Qâ²=(0,â2Ï3) at pâ0.2. For pâ0.5 a new transition to a state with a short-range order occurs. This state has a large correlation length which continuously grows with p until the establishment of a long-range order happens at pâ0.65. In the range 0.5
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 374, Issue 34, 26 July 2010, Pages 3567-3571
Journal: Physics Letters A - Volume 374, Issue 34, 26 July 2010, Pages 3567-3571
نویسندگان
P. Rubin, A. Sherman, M. Schreiber,