ELFT HÍRADÓ

[Edina Szirmai <eszirmai AT phy.bme.hu>]

                                    MEGHÍVÓ

 az "Egzotikus Kvantum Fázisok" Lendület kutatócsoport
                        következő szemináriumára


                                     Sári Judit
                (PTE, BME-MTA EKF Lendület csoport)

          Magnetoplasmons of the tilted anisotropic Dirac
                     cone material α-(BEDT-TTF)_2 I_3


Kivonat:

We study the collective modes of a low-energy continuum model of the
quasi-two-dimensional electron liquid in a layer of the organic compound
α-(BEDT-TTF)_2 I_3 in a perpendicular magnetic field. As testified by zero
magnetic field transport experiments and ab initio theory, this material
hosts both massless and massive
low-energy carriers, the former being described by two tilted and
anisotropic Dirac cones. The polarizability of these cones is anisotropic,
and two sets of magnetoplasmon modes occur between any two cyclotron
resonances.
We show that the tilt of the cones causes a unique intervalley damping
effect: the upper hybrid mode of one cone is damped by the particle-hole
continuum of the other cone in generic directions. We analyze how the
presence
of massive carriers affects the response of the system, and demonstrate how
doping can tune α-(BEDT-TTF)_2 I_3 between regimes of isotropic and
anisotropic screening.


Az előadás helye:  BME F III. épület, mfsz, szemináriumi szoba.
Ideje: 2015. március 9. hétfő, 14:15.

Minden érdeklődőt szeretettel várunk!

                                   Szirmai Edina




-- 
Edina Szirmai
Department of Theoretical Physics,
Budapest University of Technology and Economics
Budafoki ut 8.
Budapest, Hungary
Tel:(+36-1) 463-4107
Fax:(+36-1) 463-3567
www.phy.bme.hu/~eszirmai