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

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

Kartsovnik, M.V. ; Zverev, V.N. ; Biberacher, W. ; Simonov, S.V. ; Sheikin, I. ; Kushch, N.D. ; Yagubskii, E.B.

Тема: К 100-летию со дня рождения И.М. Лифшица

Інший ID: PACS: 72.15.Gd, 74.70.Kn, 71.18.+y

URI: http://dspace.nbuv.gov.ua/handle/123456789/129373

Посилання: 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.

Підтримка: We are grateful to S.M. Winter and P.D. Grigoriev for useful discussions. The work was supported by the German Research Foundation (DFG) via the grant KA 1652/4-1. The high-field measurements were done under support of the LNCMI-CNRS, member of the European Magnetic Field Laboratory (EMFL). V.N.Z. acknowledges the support from RFBR Grant 15-02-02723.

Дата: 2017

Завантажень: 267

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

Анотація:

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.

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