کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8163752 1525233 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Virtual-bound, filamentary and layered states in a box-shaped quantum dot of square potential form the exact numerical solution of the effective mass Schrödinger equation
ترجمه فارسی عنوان
مقادیر مجازی، رشته ای و لایه ای در یک نقطه کوانتومی مربعی از پتانسیل مربع شکل یک راه حل دقیق عددی معادله جرم مؤثر جرم است
کلمات کلیدی
نقاط کوانتومی، طیف انرژی، مدل سازی،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی
The effective mass Schrödinger equation of a QD of parallelepipedic shape with a square potential well is solved by diagonalizing the exact Hamiltonian matrix developed in a basis of separation-of-variables wavefunctions. The expected below bandgap bound states are found not to differ very much from the former approximate calculations. In addition, the presence of bound states within the conduction band is confirmed. Furthermore, filamentary states bounded in two dimensions and extended in one dimension and layered states with only one dimension bounded, all within the conduction band-which are similar to those originated in quantum wires and quantum wells-coexist with the ordinary continuum spectrum of plane waves. All these subtleties are absent in spherically shaped quantum dots, often used for modeling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 413, 15 March 2013, Pages 73-81
نویسندگان
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