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Department of quantum mesoscopics: seminar, Friday, February 27, 2026, ITF, 3:00 pm D.S. Annenkov, A.A. Kopasov, A.S. Mel'nikov Vzaimodeistvie segnetoelektrichestva i mezhsloevoi sverkhprovodimosti v van-der-Vaal'sovykh bisloyakh V rabote [1] teoreticheski issleduetsya model' bisloya, predpolagayushchaya nalichie mezhsloevogo sverkhprovodyashchego sparivaniya i tunnelirovaniya mezhdu sloyami. Prisutstvie spontannoi segnetoelektricheskoi polyarizatsii, perpendikulyarnoi sloyam, uchityvaetsya cherez otnositel'nyi sdvig energeticheskikh zon elektronov v raznykh sloyakh. Dlya stupenchatogo sdviga zon, modeliruyushchego granitsu mezhdu dvumya protivopolozhno polyarizovannymi domenami, prodemonstrirovana vozmozhnost' obrazovaniya lokalizovannykh sverkhprovodyashchikh sostoyanii pri temperaturakh prevyshayushchikh kriticheskuyu temperaturu vozniknoveniya odnorodnoi sverkhprovodimosti. Otdel'no analiziruetsya vliyanie mezhsloevogo tunnelirovaniya i vneshnego magnitnogo polya na mezhsloevye sverkhprovodyashchie sostoyaniya. Poluchennye rezul'taty obsuzhdayutsya v kontekste nedavnikh eksperimentov o sosushchestvovanii sverkhprovodimosti i segnetoelektrichestva v van-der-vaal'sovykh bisloyakh [2,3]. [1] D. S. Annenkov, A.A. Kopasov, A.S. Mel’nikov, Phys. Rev. B 112, 224521 (2025), [2] A. Jindal, A. Saha, Z. Li et al., Nature 613, 4852 (2023), [3] Z. Li, A. Jindal, A. Strasser et al., Phys. Rev. Lett. 133, 216002 (2024). |
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