<article 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" article-type="research-article" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of Experimental and Theoretical Physics</journal-id><journal-title-group><journal-title>Journal of Experimental and Theoretical Physics</journal-title></journal-title-group><issn publication-format="print">0044-4510</issn><issn publication-format="electronic">3034-641X</issn><publisher><publisher-name>Russian Academy of Science</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.7868/S3034641X25030125</article-id><title-group><article-title>OSOBENNOSTI SPINOVYKh VZAIMODEYSTVIY I SPINOVYKh STRUKTUR V YaN-TELLEROVSKIKh MAGNETIKAKh</article-title><trans-title-group xml:lang="ru"><trans-title>ОСОБЕННОСТИ СПИНОВЫХ ВЗАИМОДЕЙСТВИЙ И СПИНОВЫХ СТРУКТУР В ЯН-ТЕЛЛЕРОВСКИХ МАГНЕТИКАХ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Moskvin</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Москвин</surname><given-names>А. С. </given-names></name></name-alternatives><email>alexander.moskvin@urfu.ru</email><xref ref-type="aff" rid="aff-1"></xref><xref ref-type="aff" rid="aff-2"></xref></contrib></contrib-group><aff-alternatives id="aff-1"><aff><institution xml:lang="ru">Уральский федеральный университет им. первого Президента России Б. Н. Ельцина; Институт физики металлов им. М. Н. Михеева Уральского отделения Российской академии наук</institution><institution xml:lang="en"></institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff><institution xml:lang="ru"></institution><institution xml:lang="en"></institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-03-07" publication-format="electronic"><day>07</day><month>03</month><year>2025</year></pub-date><volume>167</volume><issue>3</issue><fpage>412</fpage><lpage>429</lpage><abstract xml:lang="en"><p>В рамках модели зарядовых триплетов, предложенной для описания зарядового диспропорционирования в ян-теллеровских магнетиках рассмотрена роль двухчастичного переноса заряда в формировании спин-зарядовой структуры на примере ортоникелатов RNiO3 и ортоманганитов RMnO3 (R — редкая земля или иттрий). Показано, что в общем случае спиновая зависимость гамильтониана двухчастичного переноса, или «бозонного» двойного обмена не может быть сведена к эффективному спин-гамильтониану Гейзенберга, а спин-зарядовая структура ян-теллеровских магнетиков определяется в результате минимизации энергии двойного обмена, сверхобмена и энергии спин-независимых нелокальных корреляций. Необычная магнитная структура ортоникелатов, определяемая «странным» вектором распространения k=(1/2,0,1/2) с сосуществованием ферро- и антиферромагнитных связей, является следствием конкуренции двухчастичного переноса, стабилизирующего ферромагнитную F-фазу, и сверхобменного взаимодействия Ni2+-O2−-Ni2+, стабилизирующую антиферромагнитную фазу G-типа. Анализ спиновой структуры электронно-дырочных центров в RMnO3 указывает на ферромагнитный металлический характер диспропорционированной фазы в LaMnO3 и тенденцию к формированию спиральных структур в зарядово-диспропорционированной фазе более «тяжелых» манганитов.</p></abstract><trans-abstract xml:lang="ru"><p>В рамках модели зарядовых триплетов, предложенной для описания зарядового диспропорционирования в ян-теллеровских магнетиках рассмотрена роль двухчастичного переноса заряда в формировании спин-зарядовой структуры на примере ортоникелатов RNiO3 и ортоманганитов RMnO3 (R — редкая земля или иттрий). Показано, что в общем случае спиновая зависимость гамильтониана двухчастичного переноса, или «бозонного» двойного обмена не может быть сведена к эффективному спин-гамильтониану Гейзенберга, а спин-зарядовая структура ян-теллеровских магнетиков определяется в результате минимизации энергии двойного обмена, сверхобмена и энергии спин-независимых нелокальных корреляций. Необычная магнитная структура ортоникелатов, определяемая «странным» вектором распространения k=(1/2,0,1/2) с сосуществованием ферро- и антиферромагнитных связей, является следствием конкуренции двухчастичного переноса, стабилизирующего ферромагнитную F-фазу, и сверхобменного взаимодействия Ni2+-O2−-Ni2+, стабилизирующую антиферромагнитную фазу G-типа. Анализ спиновой структуры электронно-дырочных центров в RMnO3 указывает на ферромагнитный металлический характер диспропорционированной фазы в LaMnO3 и тенденцию к формированию спиральных структур в зарядово-диспропорционированной фазе более «тяжелых» манганитов.</p></trans-abstract><funding-group xml:lang="ru"><funding-statement>Работа выполнена при поддержке Министерства образования и науки Российской федерации (проект FEUZ-2023-0017).</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>Работа выполнена при поддержке Министерства образования и науки Российской федерации (проект FEUZ-2023-0017).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>B1</label><citation-alternatives><mixed-citation xml:lang="ru">К. И. Кугель, Д. И. 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