پژوهش سیستم های بس ذره ای

پژوهش سیستم های بس ذره ای

بحرانیت در دو صفحة گرافین شیاردار شامل مولکول‌های SeH2

نوع مقاله : مقاله پژوهشی کامل

نویسنده
مرکز آموزش عالی استهبان-دانشگاه شیراز، استهبان، ایران
چکیده
در این مقاله، سامانه مورد بررسی ما دو لایه گرافین شیاردار است که مولکول‌های SeH2 در بین این دو لایه قرار گرفته اند. به کمک روش پایین‌ترین مرتبة مقیّد وردشی، رفتار ترمودینامیکی و ساختاری این سامانه از قبیل آنتروپی، انرژی آزاد، ظرفیت گرمایی ویژه و نقطة بحرانی محاسبه شده‌اند. نتایج، یک گذار ابررسانایی در محدودة خاصی از دما و چگالی را نشان می‌دهند. از اینرو، پذیرفتاری مغناطیسی، گاف انرژی ابررسانایی و چگالی جریان بحرانی نیز محاسبه شده‌اند. محاسبات ما دمای گذار ابررسانایی حدود K148 بدون اعمال فشار خارجی و چگالی جریان بحرانی A/cm²107 را نشان می‌دهند. این نتایج نشان می‌دهند که ساختار پیشنهادی می‌تواند به‌عنوان گزینه‌ای مناسب برای کاربردهای ابررسانایی در دمای متوسط مطرح شود.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Criticality in two corrugated graphene sheets including SeH2 molecules

نویسنده English

Mohammad Amin Rastkhadiv
Estahban Higher Education Center-Shiraz University, Estahban, Iran
چکیده English

In this paper, our system under study consists of two corrugated graphene layers with SeH₂ molecules placed between them. Using the lowest-order constrained variational method, the thermodynamic and structural behavior of this system, including entropy, free energy, specific heat capacity, and the critical point, has been calculated. The results reveal a superconducting transition within a specific range of temperature and density. Therefore, the magnetic susceptibility, superconducting energy gap, and critical current density have also been evaluated. Our calculations indicate a superconducting transition temperature of about 148 K without applying external pressure and a critical current density of 107 A/cm². These results suggest that the proposed structure can be considered a promising candidate for superconducting applications at intermediate temperatures.

کلیدواژه‌ها English

Superconductivity
graphene
phase transition
SeH2
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دوره 15، شماره 1 - شماره پیاپی 44
بهار 1404
بهار 1404
صفحه 1-19

  • تاریخ دریافت 19 مهر 1403
  • تاریخ بازنگری 05 آبان 1404
  • تاریخ پذیرش 09 آذر 1404