[institut] [phys4phys] SCL online seminar: Jaksa Vucicevic, Thursday, 18 November, 14:00

[Antun Balaz]

Dear colleagues,

You are cordially invited to the SCL online seminar of the Center for the Study of Complex Systems, which will be held on Thursday, 18 November 2021 at 14:00 on Zoom (link is given below). The talk entitled

Universal magnetic quantum oscillations in correlated lattice systems

will be given by Dr. Jakša Vučičević (Scientific Computing Laboratory, Center for the Study of Complex Systems, Institute of Physics Belgrade). Abstract of the talk:

Magnetic field is well known to have drastic effects on the transport properties of electronic systems. Similar to the quantum Hall effect in continuum systems, the Shubnikov-de Haas (SdH) effect in crystalline materials is an oscillatory behavior of conductivity as a function of the applied magnetic field. This phenomenon is well understood in good metals, and has been very useful in mapping out the Fermi surface in various materials. In recent experiments on synthetic moire systems, a new type of magnetic quantum oscillations has been observed that differs from SdH oscillations in two important aspects: the so called Brown-Zak (BZ) oscillations appear at elevated temperature and have no dependence on the size of the two-dimensional Fermi sea. In this talk, we will present the dynamical mean field theory (DMFT) results for the square-lattice Hubbard model in a magnetic field that clearly display the phenomenology of the BZ oscillations [1, 2]. A detailed analysis reveals an essential role of incoherence for the BZ oscillations, which may allow one to use this phenomenon as a tool for characterization of dominant scattering mechanisms in lattice systems.

[1] J. Vučičević and R. Žitko, Phys. Rev. Lett. 127, 196601 (2021).
[2] J. Vučičević and R. Žitko, Phys. Rev. B 104, 205101 (2021).

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Time: Nov 18, 2021 14:00 Belgrade
https://us02web.zoom.us/j/86335293898?pwd=YSsrZkZkTTU5ckN6Z3dQRXZPbkZrQT09

Meeting ID: 863 3529 3898
Passcode: 054147
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Best regards,
Antun Balaž

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Dr. Antun Balaž
Research Professor

http://www.scl.rs/antun
Phone: +381 11 3713152
Fax: +381 11 3162190

Scientific Computing Laboratory
Center for the Study of Complex Systems

Institute of Physics Belgrade
National Institute of the Republic of Serbia
Pregrevica 118, 11080 Belgrade, Serbia
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