|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Phase separation near the charge neutrality point in FeSe1-xTex crystals with x < 0.15статья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 января 2022 г.
- Авторы: Ovchenkov Yevgeniy Anatolevich, Chareev Dmitry, Kozlyakova Ekaterina S., Levin Eduard, Mikheev Mihail G., Presnov Denis E., Trifonov Artem S., Volkova Olga, Vasiliev Alexander
- Журнал: Superconductor Science and Technology
- Том: 35
- Номер: 1
- Год издания: 2022
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Номер статьи: 015011
- DOI: 10.1088/1361-6668/ac3e55
- Аннотация: Our study of FeSe$ _ {1-x}$Te$ _ {x}$ crystals with x $<$ 0.15 shows that the phase separation in these compositions occurs into phases with a different stoichiometry of iron. This phase separation may indicate structural instability of the iron plane in the studied range of compositions. We tentatively propose an explanation of the structural instability of the iron plane in the studied layered compounds in terms of the possible change in the bond polarity and the peculiarity of the direct $d-d$ exchange in the iron plane in the framework of the basic phenomenological description such as the Bethe-Slater curve. With this approach, when the distance between iron atoms is close to the value at which the sign of the magnetic exchange for some $d$ orbitals changes, structural and electronic instability can occur. Anomalies in the crystal field near the point of charge neutrality can also be a significant component of this instability.
- Добавил в систему: Чареев Дмитрий Александрович