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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestifm-267</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>АНАЛИЗ ЭЛЕКТРОННОЙ СТРУКТУРЫ ЭЛЕКТРИЧЕСКИ ИНДУЦИРОВАННОЙ КВАНТОВОЙ ТОЧКИ ВО ВНЕШНЕМ МАГНИТНОМ ПОЛЕ</article-title><trans-title-group xml:lang="en"><trans-title>ANALYSIS OF THE ELECTRONIC STRUCTURE OF AN ELECTRICALLY INDUCED QUANTUM DOT IN THE EXTERNAL MAGNETIC FIELD</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Левчук</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Levchuk</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант</p></bio><bio xml:lang="en"><p>Postgraduate</p></bio><email xlink:type="simple">liauchuk.alena@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макаренко</surname><given-names>Л. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarenko</surname><given-names>L. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико- математических наук, доцент, доцент кафедры математи-ческого моделирования и управления</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathe ma-tics), Assistant Professor, Assistant Professor of the Mathematical Modeling and Control Department</p></bio><email xlink:type="simple">makarenko@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University,</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>09</day><month>10</month><year>2017</year></pub-date><volume>0</volume><issue>3</issue><fpage>87</fpage><lpage>98</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Левчук Е.А., Макаренко Л.Ф., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Левчук Е.А., Макаренко Л.Ф.</copyright-holder><copyright-holder xml:lang="en">Levchuk E.A., Makarenko L.F.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestifm.belnauka.by/jour/article/view/267">https://vestifm.belnauka.by/jour/article/view/267</self-uri><abstract><p>Проведено численное моделирование электронной структуры квантовой точки, индуцированной электрическим полем наноразмерного дискообразного затвора и находящейся во внешнем магнитном поле. С помощью метода конечных элементов рассчитаны зависимости энергетического спектра электрона от величины магнитного поля и потенциала на затворе. Обнаружено наличие последовательности точек квазипересечения электронных уровней при относительно слабых магнитных полях, а также существование групп близких уровней энергии (электронных оболочек). Показано, что, несмотря на существенное отличие потенциала затвора от параболического потенциала, для качественного описания электронной структуры электрически индуцированной квантовой точки возможно использование модели приповерхностного анизотропного гармонического осциллятора. На основании этой модели описаны закономерности эволюции структуры волновых функций при изменении потенциала затвора и магнитного поля. В частности, модель анизотропного осциллятора позволяет предсказать появление точек квазипересечения электронных уровней при изменении внешних полей, а также квазивырождение состояний с различными значениями проекции орбитального момента импульса.</p><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title> </title><p> </p><p>Numerical modeling of the electronic structure of a quantum dot, induced by an electric ﬁeld of a nanosized disc-shaped gate, is carried out in the presence of external magnetic ﬁeld. The dependences of an electronic energy spectrum on electric and magnetic ﬁelds are calculated using the ﬁnite element method. It has been found that a series of anti-crossing points for electronic levels takes place at relatively small magnetic ﬁelds. The existence of groups of close-energy levels (electronic shells) has been found. It has been shown that despite the essential distinction of the gate potential from the parabolic one, a model of a near-surface anisotropic harmonic oscillator can be effectively used for a qualitative description of the electronic structure of the electrically induced quantum dot. With the use of this model, the evolution of energy spectrum and wave function structure with magnetic and electric ﬁelds is described. In particular, the anisotropic oscillator model allows to predict anti-crossing points of electronic levels in external ﬁelds, as well as quasi-degeneracy of states having different values of the angular momentum projection.</p></sec><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>квантовая точка</kwd><kwd>численное моделирование</kwd><kwd>энергетический спектр</kwd><kwd>квазипересечение</kwd><kwd>анизотропный гармонический осциллятор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quantum dot</kwd><kwd>numerical modeling</kwd><kwd>energy spectrum</kwd><kwd>anti-crossing</kwd><kwd>anisotropic harmonic oscillator</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kastner, M. A. Artiﬁcial atoms / M. A. 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