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http://hdl.handle.net/2445/184701
Title: | Fermi surface properties of the bifunctional organic metal κ-(BETS)2Mn[N(CN)2]3 near the metal-insulator transition |
Author: | Zverev, V.N. Biberacher, W. Oberbauer, S. Sheikin, I. Alemany i Cahner, Pere Canadell, Enric, 1950- Kartsovnik M.V. |
Keywords: | Estructura electrònica Teoria del funcional de densitat Magnetisme Electronic structure Density functionals Magnetism |
Issue Date: | 21-Mar-2019 |
Publisher: | American Physical Society |
Abstract: | We present detailed studies of the high-field magnetoresistance of the layered organic metal κ-(BETS)2Mn- [N(CN)2]3 under a pressure slightly above the insulator-metal transition. The experimental data are analyzed in terms of the Fermi surface properties and compared with the results of first-principles band structure calculations. The calculated size and shape of the in-plane Fermi surface are in very good agreement with those derived from Shubnikov-de Haas oscillations as well as the classical angle-dependent magnetoresistance oscillations. A comparison of the experimentally obtained effective cyclotron masses with the calculated band masses reveals electron correlations significantly dependent on the electron momentum. The momentum- or band-dependent mobility is also reflected in the behavior of the classical magnetoresistance anisotropy in a magnetic field parallel to layers. Other characteristics of the conducting system related to interlayer charge transfer and scattering mechanisms are discussed based on the experimental data. Besides the known high-field effects associated with the Fermi surface geometry, new pronounced features have been found in the angle-dependent magnetoresistance, which might be caused by coupling of the metallic charge transport to a magnetic instability in proximity to the metal-insulator phase boundary. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevB.99.125136 |
It is part of: | Physical Review B, 2019, vol. 99, p. 125136 |
URI: | http://hdl.handle.net/2445/184701 |
Related resource: | https://doi.org/10.1103/PhysRevB.99.125136 |
ISSN: | 2469-9950 |
Appears in Collections: | Articles publicats en revistes (Institut de Química Teòrica i Computacional (IQTCUB)) Articles publicats en revistes (Ciència dels Materials i Química Física) |
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714078.pdf | 8.11 MB | Adobe PDF | View/Open |
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