کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1811116 1025581 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantum critical surface of the XXZ zigzag spin chain with applied magnetic field and its application
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Quantum critical surface of the XXZ zigzag spin chain with applied magnetic field and its application
چکیده انگلیسی

We analyze the exact ground state of XXZ zigzag spin chain with applied magnetic field and find the quantum critical surface. Using the theorem of positive semi-definite matrix, we can prove that the ground states for a specific region are fully polarized state and one-magnon state. We also argue that this is the quantum critical surface in all cases. Applied to the superconducting quantum dots array, our result gives the analytical expression of quantum critical surface for the system in the presence of gate voltage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 406, Issue 11, 15 May 2011, Pages 2211–2217
نویسندگان
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