کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1802967 | 1024608 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exact results of a dimerized S=1 Ising chain with single-ion anisotropy
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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: Exact results of a dimerized S=1 Ising chain with single-ion anisotropy Exact results of a dimerized S=1 Ising chain with single-ion anisotropy](/preview/png/1802967.png)
چکیده انگلیسی
The dimerized spin-1 Ising chain with both longitude and transverse single-ion anisotropies Dz and Dx is solved exactly by means of a mapping to the spin-12 Ising chain with the alternating transverse fields and the Jordan–Wigner transformation. The analytical expressions of the quasi-particles’ spectra Λk, the minimal energy gap Δ0 for exciting a fermion quasi-particle, the minimal energy gap Δh for exciting a hole, and the ground-state energy Eg are obtained. The phase diagram of the ground state is also given. The results show that the system exhibits a series of quantum phase transitions depending on the dimerization strength of the crystal fields, while the quantum critical points are determined exactly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 19, October 2009, Pages 3104–3109
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 19, October 2009, Pages 3104–3109
نویسندگان
Haina Wu, Guozhu Wei, Yu Han, Guangyu Yi, Weijiang Gong,