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Department of quantum mesoscopics: seminar, Friday, June 19, 2026, ITF, 3:00 pm D.S. Zograbyan, M.M. Glazov Nechetnaya vyazkost' elektronov i anomal'nyi effekt Kholla v dvumernykh sistemakh s plavnym besporyadkom V nastoyashchee vremya osoboe vnimanie privlekayut sverkhchistye elektronnye sistemy, gde realizuyutsya razlichnye vidy nediffuzionnogo transporta. V chastnosti, osobenno interesen gidrodinamicheskii rezhim, gde dlina probega po otnosheniyu k elektron-elektronnym stolknoveniyam znachitel'no men'she razmerov sistemy, kotorye, v svoyu ochered', men'she dliny relaksatsii impul'sa. V takikh sistemakh proyavlyayutsya effekty vyazkosti i mozhet byt' realizovano puazeilevskoe techenie elektronov. Vazhnoi zadachei yavlyaetsya izuchenie anomal'nogo effekta Kholla - poyavlenie poperechnogo k tyanushchemu polyu toka, ne svyazannogo s deistviem sily Lorentsa, a voznikayushchego za schet spin-orbital'nogo vzaimodeistviya i narushennoi vneshnim magnitnym polem simmetrii otnositel'no obrashcheniya vremeni. V dannoi rabote predstavlena teoriya odnogo iz mekhanizmov anomal'nogo effekta Kholla, a imenno, effekta «nechetnoi» vyazkosti, proyavlyayushchegosya v vide nediagonal'nykh komponent tenzora vyazkosti, proportsional'nykh stepeni polyarizatsii elektronov i konstante spin-orbital'nogo vzaimodeistviya. Rasschitan tenzor vyazkostei i vyvedeny kvazigidrodinamicheskie uravneniya s uchetom effekta nechetnoi vyazkosti v sluchae, kogda elektrony vzaimodeistvuyut s plavnym besporyadkom. Obsuzhdaetsya svyaz' mezhdu spinovymi i elektricheskimi tokami. Poluchen vklad nechetnoi vyazkosti v anomal'nyi effekt Kholla. Dannaya rabota yavlyaetsya pervym shagom k postroeniyu teorii nechetnoi vyazkosti, obuslovlennoi spin-orbital'nym vzaimodeistviem. D. S. Zograbyan, M. M. Glazov, Nechetnaya vyazkost' elektronov i anomal'nyi effekt Kholla v dvumernykh sistemakh s plavnym besporyadkom, Pis'ma v ZhETF 123, 278 (2026) |