کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1808696 1525173 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
First-order commensurate–incommensurate magnetic phase transition in the coupled FM spin-1/2 two-leg ladders
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
First-order commensurate–incommensurate magnetic phase transition in the coupled FM spin-1/2 two-leg ladders
چکیده انگلیسی

We consider the spin-1/2 two-leg ladders with ferromagnetic (FM) interactions along legs and rungs. Using the stochastic series expansion QMC method, we study the low-temperature magnetic behavior of the system. An isolated spin-1/2 FM two-leg ladder is in the gapped saturated FM phase at zero temperature. As soon as the spin-1/2 FM two-leg ladders are connected with antiferromagnetic (AFM) inter-ladder interaction, a first-order commensurate–incommensurate quantum phase transition occurs in the ground state magnetic phase diagram. In fact a jump in the magnetization curve is observed. We found that, coupled spin-1/2 FM two-leg ladders are in a nonmagnetic phase at zero temperature. Applying a magnetic field, the ground state of coupled spin-1/2 FM two-leg ladders remains in the nonmagnetic phase up to a quantum saturate critical field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 476, 1 November 2015, Pages 24–28
نویسندگان
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