Publication:
Superconductivity at 161 K in thorium hydride ThH10: Synthesis and properties

Файлы
W2988132421.pdf(2.69 MB)
Дата
2020
Авторы
Semenok, D. V.
Kvashnin, A. G.
Ivanova, A. G.
Svitlyk, V.
Fominski, V. Y.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Организационные подразделения
OrgUnit Logo
Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
Выпуск журнала
Аннотация
© 2019 Elsevier LtdHere we report targeted high-pressure synthesis of two novel high-TC hydride superconductors, P63/mmc-ThH9 and Fm3-m-ThH10, with the experimental critical temperatures (TC) of 146 K and 159–161 K and upper critical magnetic fields (μHC) 38 and 45 Tesla at pressures 170–175 Gigapascals, respectively. Superconductivity was evidenced by the observation of zero resistance and a decrease of TC under external magnetic field up to 16 Tesla. This is one of the highest critical temperatures that has been achieved experimentally in any compound, along with such materials as LaH10, H3S and HgBa2CaxCu2O6+ z. Our experiments show that fcc-ThH10 has stabilization pressure of 85 GPa, making this material unique among all known high-TC metal polyhydrides. Two recently predicted Th-H compounds, I4/mmm-ThH4 (>86 GPa) and Cmc21-ThH6 (86–104 GPa), were also synthesized. Equations of state of obtained thorium polyhydrides were measured and found to be in excellent agreement with the theoretical calculations. New phases were examined theoretically and their electronic, phonon, and superconducting properties were calculated.
Описание
Ключевые слова
Цитирование
Superconductivity at 161 K in thorium hydride ThH10: Synthesis and properties / Semenok, D.V. [et al.] // Materials Today. - 2020. - 10.1016/j.mattod.2019.10.005
URI
https://www.doi.org/10.1016/j.mattod.2019.10.005
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85075270320&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000522556600017
 https://openrepository.mephi.ru/handle/123456789/20064
Коллекции
Публикации