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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">inform</journal-id><journal-title-group><journal-title xml:lang="ru">Информатика</journal-title><trans-title-group xml:lang="en"><trans-title>Informatics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0301</issn><issn pub-type="epub">2617-6963</issn><publisher><publisher-name>UIIP NASB</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">inform-312</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>МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICAL MODELING</subject></subj-group></article-categories><title-group><article-title>ИСПОЛЬЗОВАНИЕ МЕТОДА КОНЕЧНЫХ РАЗНОСТЕЙ ДЛЯ РАСЧЕТА ЭЛЕКТРОННЫХ СОСТОЯНИЙ В МДП-СТРУКТУРЕ С ОДИНОЧНЫМ ДОНОРОМ</article-title><trans-title-group xml:lang="en"><trans-title>THE USE OF THE FINITE DIFFERENCE METHOD FOR CALCULATION OF ELECTRONIC STATES IN MIS-STRUCTURE WITH SINGLE DONOR 1</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>ассистент</p></bio><bio xml:lang="en"><p>assistant</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>Лемешевский</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lemeshevskii</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук, зам. директора</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Deputy Director</p></bio><email xlink:type="simple">svl@im.basnet.by</email><xref ref-type="aff" rid="aff-2"/></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</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Associate Professor</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, Минск</institution></aff><aff xml:lang="en"><institution>Belarusian State University, Minsk</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт математики Национальной академии наук Беларуси, Минск</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Sciences of Belarus, Minsk</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>26</day><month>03</month><year>2018</year></pub-date><volume>15</volume><issue>1</issue><fpage>7</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Левчук Е.А., Лемешевский С.В., Макаренко Л.Ф., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Левчук Е.А., Лемешевский С.В., Макаренко Л.Ф.</copyright-holder><copyright-holder xml:lang="en">Levchuk E.A., Lemeshevskii S.V., 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://inf.grid.by/jour/article/view/312">https://inf.grid.by/jour/article/view/312</self-uri><abstract><p>Проводится численное моделирование эволюции электронных состояний под действием неоднородного внешнего электрического поля в структуре металл-диэлектрик-полупроводник (МДП-структуре) при наличии одиночного донорного центра. В качестве источника электрического поля рассматривается нанометровый дискообразный затвор, для расчета потенциала которого решается задача для уравнения Лапласа в многослойной среде. Энергетический спектр связанного электрона находится из задачи для стационарного уравнения Шредингера. Для решения обеих задач строятся разностные схемы. Разностная схема для уравнения Шредингера учитывает неаналитичность волновой функции в точке расположения донора. При решении задачи для уравнения Лапласа предлагаются асимптотические граничные условия, аппроксимирующие потенциал внешнего поля на больших расстояниях от затвора в различных слоях, что позволяет существенно уменьшить расчетную область. Исследуется влияние этих граничных условий на точность вычисления потенциала и энергий. С помощью построенных разностных схем рассчитываются зависимости энергетического спектра связанного электрона от потенциала на затворе, определяются значения критического потенциала, при котором происходит передислокация волновой функции электрона. На основании результатов вычислений устанавливается, что управляющим параметром для описания поведения электрона является разность потенциалов между донором и поверхностью полупроводника. Показывается, что критическая разность потенциалов практически не зависит от толщины и проницаемости диэлектрического слоя.</p><p> </p></abstract><trans-abstract xml:lang="en"><p>Numerical modeling of electronic state evolution due to non-uniform external electric field in the structure metal-insulator-semiconductor with solitary donor center is carried out. Considering a nanometer disc-shaped gate as a source of the electric field, the problem for the Laplace equation in multilayered medium is solved numerically to determine the distribution of the gate potential. The energy spectrum of a bound electron is calculated from the problem for the stationary Schrödinger equation. Finite difference schemes are constructed to solve both the problems. Difference scheme for the Schrödinger equation takes into account cusp condition for the wave function at the donor location. To solve the problem for the Laplace equation, asymptotic boundary conditions for approximating the external field potential at large distances from the gate in different layers are suggested. These conditions allow to reduce the calculation domain for the electrostatic problem essentially. The effect of the boundary conditions on the accuracy of calculating the potential and energies is investigated. Using the developed difference schemes, the dependences of the energy spectrum of the bound electron on the gate potential are calculated, and the values of critical potential at which the wave function of the electron is relocated are determined. It has been found on the basis of calculation results, that governing parameter for the description of electronic behavior is the potential difference between the donor and semiconductor surface. It has been shown that critical potential difference does not depend on dielectric thickness and permittivity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод конечных разностей</kwd><kwd>МДП-структура</kwd><kwd>уравнение Шредингера</kwd><kwd>нанозатвор</kwd><kwd>энергетический уровень</kwd><kwd>численное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite difference method</kwd><kwd>MIS-structure</kwd><kwd>Schrödinger equation</kwd><kwd>nanogate</kwd><kwd>energy level</kwd><kwd>numerical modeling</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">Simulation of intrinsic parameter fluctuations in decananometer and nanometer-scale MOSFETs / A. Asenov [et al.] // IEEE transactions on electron devices. – 2003. – Vol. 50, no. 9. – P. 1837–1852.</mixed-citation><mixed-citation xml:lang="en">Simulation of intrinsic parameter fluctuations in decananometer and nanometer-scale MOSFETs / A. Asenov [et al.] // IEEE transactions on electron devices. – 2003. – Vol. 50, no. 9. – P. 1837–1852.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Koenraad, P. M. Single dopants in semiconductors / P. M. Koenraad, M. E. Flatte // Nature materials. – 2011. – Vol. 10, no. 2. – P. 91–100.</mixed-citation><mixed-citation xml:lang="en">Koenraad, P. M. Single dopants in semiconductors / P. M. Koenraad, M. E. Flatte // Nature materials. – 2011. – Vol. 10, no. 2. – P. 91–100.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Kane, B. E. A silicon-based nuclear spin quantum computer / B. E. Kane // Nature (London). – 1998. – Vol. 393, no. 6681. – P. 133–137.</mixed-citation><mixed-citation xml:lang="en">Kane, B. E. A silicon-based nuclear spin quantum computer / B. E. Kane // Nature (London). – 1998. – Vol. 393, no. 6681. – P. 133–137.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Electron-spin-resonance transistors for quantum computing in silicon-germanium heterostructures / R. Vrijen [et al.] // Physical Review A. – 2000. – Vol. 62, no. 1. – P. 012306-1–012306-10.</mixed-citation><mixed-citation xml:lang="en">Electron-spin-resonance transistors for quantum computing in silicon-germanium heterostructures / R. Vrijen [et al.] // Physical Review A. – 2000. – Vol. 62, no. 1. – P. 012306-1–012306-10.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Charge-based quantum computing using single donors in semiconductors / L.C.L. Hollenberg [et al.] // Physical Review B. – 2004. – Vol. 69, no. 11. – P. 113301-1–113301-5.</mixed-citation><mixed-citation xml:lang="en">Charge-based quantum computing using single donors in semiconductors / L.C.L. Hollenberg [et al.] // Physical Review B. – 2004. – Vol. 69, no. 11. – P. 113301-1–113301-5.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Gate-induced ionization of single dopant atoms / G. D. J. Smit [et al.] // Physical Review B. – 2003. – Vol. 68, no.19. – P. 193302-1–193302-5.</mixed-citation><mixed-citation xml:lang="en">Gate-induced ionization of single dopant atoms / G. D. J. Smit [et al.] // Physical Review B. – 2003. – Vol. 68, no.19. – P. 193302-1–193302-5.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Numerical study of hydrogenic effective mass theory for an impurity P donor in Si in the presence of an electric field and interfaces / L. M. Kettle [et al.] // Physical Review B. – 2003. – Vol. 68, no. 7. – P. 075317-1–075317-7.</mixed-citation><mixed-citation xml:lang="en">Numerical study of hydrogenic effective mass theory for an impurity P donor in Si in the presence of an electric field and interfaces / L. M. Kettle [et al.] // Physical Review B. – 2003. – Vol. 68, no. 7. – P. 075317-1–075317-7.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">MacMillen, D. B. Variational solutions of simple quantum systems subject to variable boundary conditions. II. Shallow donor imputities near semiconductor interfaces: Si, Ge / D. B. MacMillen, U. Landman // J. Chem. Phys. – 1984. – Vol. 80, no. 2. – P. 1691–1702.</mixed-citation><mixed-citation xml:lang="en">MacMillen, D. B. Variational solutions of simple quantum systems subject to variable boundary conditions. II. Shallow donor imputities near semiconductor interfaces: Si, Ge / D. B. MacMillen, U. Landman // J. Chem. Phys. – 1984. – Vol. 80, no. 2. – P. 1691–1702.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Calderon, M. J. Quantum control of donor electrons at the Si-SiO2 interface / M. J. Calderon, B. Koiller, S. Das Sarma // Physical Review Lett. – 2006. – Vol. 96, no. 9. – P. 096802-1–096802-5.</mixed-citation><mixed-citation xml:lang="en">Calderon, M. J. Quantum control of donor electrons at the Si-SiO2 interface / M. J. Calderon, B. Koiller, S. Das Sarma // Physical Review Lett. – 2006. – Vol. 96, no. 9. – P. 096802-1–096802-5.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Calderon, M. J. External field control of donor electron exchange at the Si/SiO2 interface / M. J. Calderon, B. Koiller, S. Das Sarma // Physical Review B. – 2007. – Vol. 75, no. 12. – P. 125311-1–125311-11.</mixed-citation><mixed-citation xml:lang="en">Calderon, M. J. External field control of donor electron exchange at the Si/SiO2 interface / M. J. Calderon, B. Koiller, S. Das Sarma // Physical Review B. – 2007. – Vol. 75, no. 12. – P. 125311-1–125311-11.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Effect of a metallic gate on the energy levels of a shallow donor / A. F. Slachmuylders [et al.] // Appl. Phys. Lett. – 2008. – Vol. 92, no. 8. – P. 083104-1–083104-3.</mixed-citation><mixed-citation xml:lang="en">Effect of a metallic gate on the energy levels of a shallow donor / A. F. Slachmuylders [et al.] // Appl. Phys. Lett. – 2008. – Vol. 92, no. 8. – P. 083104-1–083104-3.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Shallow donor states near a semiconductor-insulator-metal interface / Y. L. Hao [et al.] // Physical Review B. – 2009. – Vol. 80, no. 3. – P. 035329-1–035329-10.</mixed-citation><mixed-citation xml:lang="en">Shallow donor states near a semiconductor-insulator-metal interface / Y. L. Hao [et al.] // Physical Review B. – 2009. – Vol. 80, no. 3. – P. 035329-1–035329-10.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Nikolyuk, V. A. The energy structure of quantum dots induced in quantum wells by a nonuniform electric field / V. A. Nikolyuk, I. V. Ignatiev // Semiconductors. – 2007. – Vol. 41, no. 12. – P. 1422–1429.</mixed-citation><mixed-citation xml:lang="en">Nikolyuk, V. A. The energy structure of quantum dots induced in quantum wells by a nonuniform electric field / V. A. Nikolyuk, I. V. Ignatiev // Semiconductors. – 2007. – Vol. 41, no. 12. – P. 1422–1429.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Самарский, А. А. Теория разностных схем / А. А. Самарский. – М.: Наука, 1989. – 616 с.</mixed-citation><mixed-citation xml:lang="en">Самарский, А. А. Теория разностных схем / А. А. Самарский. – М.: Наука, 1989. – 616 с.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Souza, G. V. B. Finite-difference calculation of donor energy levels in a spherical quantum dot subject to a magnetic field / G. V. B. Souza, A. Bruno-Alfonso // Physica E. – 2015. – Vol. 66. – P. 128–132.</mixed-citation><mixed-citation xml:lang="en">Souza, G. V. B. Finite-difference calculation of donor energy levels in a spherical quantum dot subject to a magnetic field / G. V. B. Souza, A. Bruno-Alfonso // Physica E. – 2015. – Vol. 66. – P. 128–132.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Modeling a nanowire superlattice using the finite difference method in cylindrical polar coordinates / C. Galeriu [et al.] // Comp. Phys. Commun. – 2004. – Vol. 157, no. 2. – P. 147–159.</mixed-citation><mixed-citation xml:lang="en">Modeling a nanowire superlattice using the finite difference method in cylindrical polar coordinates / C. Galeriu [et al.] // Comp. Phys. Commun. – 2004. – Vol. 157, no. 2. – P. 147–159.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Bingel, W. A. A physical interpretation of the cusp conditions for molecular wave functions / W. A. Bingel // Theoretica Chimica Acta. – 1967. – Vol. 8, no. 1. – P. 54–61.</mixed-citation><mixed-citation xml:lang="en">Bingel, W. A. A physical interpretation of the cusp conditions for molecular wave functions / W. A. Bingel // Theoretica Chimica Acta. – 1967. – Vol. 8, no. 1. – P. 54–61.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Смайт, В. Электростатика и электродинамика / В. Смайт. – М.: Изд-во иностр. лит., 1954. – 604 с.</mixed-citation><mixed-citation xml:lang="en">Смайт, В. Электростатика и электродинамика / В. Смайт. – М.: Изд-во иностр. лит., 1954. – 604 с.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Levchuk, E. A. On controlling the electronic states of shallow donors using a finite-size metal gate / E. A. Levchuk, L.F. Makarenko // Semiconductors. – 2016. – Vol. 50, no. 1. – P. 89–96.</mixed-citation><mixed-citation xml:lang="en">Levchuk, E. A. On controlling the electronic states of shallow donors using a finite-size metal gate / E. A. Levchuk, L.F. Makarenko // Semiconductors. – 2016. – Vol. 50, no. 1. – P. 89–96.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Сьярле, Ф. Метод конечных элементов для эллиптических задач / Ф. Сьярле. – М.: Мир, 1980. – 510 с.</mixed-citation><mixed-citation xml:lang="en">Сьярле, Ф. Метод конечных элементов для эллиптических задач / Ф. Сьярле. – М.: Мир, 1980. – 510 с.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Левчук, Е. А. Влияние магнитного поля на локализацию волновой функции электрона в системе нанозатвор – донор / Е. А. Левчук, Л. Ф. Макаренко // Известия НАН Беларуси. Сер. физ.-мат. наук. – 2016. – № 2. – P. 68–75.</mixed-citation><mixed-citation xml:lang="en">Левчук, Е. А. Влияние магнитного поля на локализацию волновой функции электрона в системе нанозатвор – донор / Е. А. Левчук, Л. Ф. Макаренко // Известия НАН Беларуси. Сер. физ.-мат. наук. – 2016. – № 2. – P. 68–75.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
