Shubnikov–de Haas oscillations and electronic correlations in the layered organic metal κ-(BETS)₂Mn[N(CN)₂]₃

• Published in: Физика низких температур
• Date: 2017
• Main Authors: Kartsovnik, M.V., Zverev, V.N., Biberacher, W., Simonov, S.V., Sheikin, I., Kushch, N.D., Yagubskii, E.B.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2017
• Subjects: К 100-летию со дня рождения И.М. Лифшица
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/129373
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Shubnikov–de Haas oscillations and electronic correlations in the layered organic metal κ-(BETS)₂Mn[N(CN)₂]₃ / M.V. Kartsovnik, V.N. Zverev, W. Biberacher, S.V. Simonov, I. Sheikin, N.D. Kushch, E.B. Yagubskii // Физика низких температур. — 2017. — Т. 43, № 2. — С. 291-296. — Бібліогр.: 53 назв. — англ.

We present magnetoresistance studies of the quasi-two-dimensional organic conductor κ-(BETS)₂Mn[N(CN)₂]₃, where BETS stands for bis(ethylenedithio)tetraselenafulvalene. Under a moderate pressure of 1.4 kbar, required for stabilizing the metallic ground state, Shubnikov–de Haas oscillations, associated with a classical and a magnetic-breakdown cyclotron orbits on the cylindrical Fermi surface, have been found at fields above 10 T. The effective cyclotron masses evaluated from the temperature dependence of the oscillation amplitudes reveal strong renormalization due to many-body interactions. The analysis of the relative strength of the oscillations corresponding to the different orbits and of its dependence on magnetic field suggests an enhanced role of electron-electron interactions on flat parts of the Fermi surface.