Fermi surface properties of the bifunctional organic metal k-(BETS)_2Mn[N(CN)_2]_3 near the metal-insulator transition

Zverev V. N.; Biberacher W.; Oberbauer S.; Sheikin I; Alemany P.; Canadell E.; Kartsovnik M. V

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Fermi surface properties of the bifunctional organic metal k-(BETS)_2Mn[N(CN)_2]_3 near the metal-insulator transition

机译：金属-绝缘体转变附近的双功能有机金属k-（BETS）_2Mn [N（CN）_2] _3的费米表面性质

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We present detailed studies of the high-field magnetoresistance of the layered organic metal kappa-(BETS)(2)Mn[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.

机译：我们目前对层状有机金属kappa-（BETS）（2）Mn [N（CN）（2）]（3）在略高于绝缘体-金属转变点的压力下的高场磁阻进行详细研究。根据费米表面特性对实验数据进行了分析，并与第一性原理的能带结构计算结果进行了比较。平面内费米表面的计算尺寸和形状与从Shubnikov-de Haas振荡以及经典的角度相关的磁阻振荡得出的结果非常吻合。实验获得的有效回旋加速器质量与计算的能带质量的比较表明，电子相关性显着取决于电子动量。依赖于动量或能带的迁移率也反映在平行于层的磁场中经典磁阻各向异性的行为中。基于实验数据，讨论了与层间电荷转移和散射机制有关的导电系统的其他特性。除了已知的与费米表面几何形状有关的高场效应外，在与角度相关的磁阻中还发现了新的显着特征，这可能是由于金属电荷传输与邻近金属绝缘体相的磁不稳定性耦合而引起的。边界。

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《Physical review. B, Condensed Matter And Materals Physics》 |2019年第12期|125136.1-125136.14|共14页
作者
Zverev V. N.; Biberacher W.; Oberbauer S.; Sheikin I; Alemany P.; Canadell E.; Kartsovnik M. V;
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Russian Acad Sci, Inst Solid State Phys, Academician Ossipyan Str 2, Chernogolovka 142432, Russia|Moscow Inst Phys & Technol, Inst Skii 9, Dolgoprudnyi 141700, Russia;

Bayer Akad Wissensch, Walther Meissner Inst, Walther Meissner Str 8, D-85748 Garching, Germany;

Bayer Akad Wissensch, Walther Meissner Inst, Walther Meissner Str 8, D-85748 Garching, Germany|Tech Univ Munich, Phys Dept, James Franck Str 1, D-85748 Garching, Germany;

UJF, LNCMI, CNRS, EMFL, F-38042 Grenoble, France;

Univ Barcelona, Dept Ciencia Mat & Quim Fis, Marti i Franques 1, E-08028 Barcelona, Spain|Univ Barcelona, Inst Quim Teor & Computac IQTCUB, Marti i Franques 1, E-08028 Barcelona, Spain;

CSIC, Inst Ciencia Mat Barcelona ICMAB, Campus UAB, Bellaterra 08193, Spain;

Bayer Akad Wissensch, Walther Meissner Inst, Walther Meissner Str 8, D-85748 Garching, Germany;

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1. Fermi surface properties of the bifunctional organic metal k-(BETS)_2Mn[N(CN)_2]_3 near the metal-insulator transition [J] . Zverev V. N., Biberacher W., Oberbauer S., Physical review. B, Condensed Matter And Materals Physics . 2019,第12期

机译：在金属绝缘体过渡附近的双官能有机金属K-（BETS）_2MN [N（CN）_2] _3的FERMI表面性质
2. Fermi surface properties of the bifunctional organic metal kappa-(BETS)(2)Mn[N(CN)(2)](3) near the metal-insulator transition [J] . Zverev V. N., Biberacher W., Oberbauer S., Physical review, B . 2019,第12期

机译：在金属绝缘体转变附近的双官能有机金属Kappa-（Bets）（2）Mn [N（CN）（2）]（3）的Fermi表面性质
3. Magnetic transformations in the organic conductor κ(BETS)_2Mn[N(CN)_2]_3 at the metal-insulator transition [J] . O. M. Vyaselev, M. V. Kartsovnik, W. Biberacher, Physical review . 2011,第9期

机译：金属-绝缘体转变过程中有机导体κ（BETS）_2Mn [N（CN）_2] _3的磁转变
4. Theoretical limits, legacies, and prospects: Types of physics involved and kinds of problems that might be solved - What can the Fermi-Hubbard model teach about metal-insulator transitions, magnetism, exotic superconductivity, and materials like transition metal monoxides, cuprates, heavy fermions? [C] . Vladimir Dobrosavljevic, Gabe Aeppli 2D Quantum Metamaterials Workshop . 2020

机译：理论限制，遗产和前景：涉及的物理类型和可能解决的各种问题 - 什么可以教授Fermi-Hubbard模型教授金属绝缘体过渡，磁，异国情调的超导和过渡金属一氧化物，铜酸酯，铜酸酯费米子？
5. Optical properties of organic superconductor k-(BETS)2-iron tetrabromide. [D] . Hossein khah, Nazanin. 2007

机译：有机超导体k-（BETS）2-四溴化铁的光学性质。
6. Surface-state Coulomb repulsion accelerates a metal-insulator transition in topological semimetal nanofilms [O] . S. Ito, M. Arita, J. Haruyama, 2020

机译：表面态库仑排斥加速拓扑半金属纳米膜中的金属-绝缘体转变
7. Fermi surface properties of the bifunctional organic metal κ−(BETS)2MnN(CN)23 near the metal-insulator transition [O] . V. N. Zverev, W. Biberacher, S. Oberbauer, 2019

机译：在金属 - 绝缘体过渡附近的双官能有机金属κ-（BETS）2MN N（CN）2 3的Fermi表面性质
8. Surface states, surface metal-insulator, and surface insulator-metal transitions [R] . Tosatti, E. 1995

机译：表面状态，表面金属 - 绝缘体和表面绝缘体 - 金属过渡

Fermi surface properties of the bifunctional organic metal k-(BETS)_2Mn[N(CN)_2]_3 near the metal-insulator transition

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