Инд. авторы:	Mauchain J., Ohtsubo Y., Hajlaoui M., Papalazarou E., Marsi M., Taleb-Ibrahimi A., Faure J., Kokh K.A., Tereshchenko O.E., Eremeev S.V., Chulkov E.V., Perfetti L.
Заглавие:	Circular dichroism and superdiffusive transport at the surface of BiTeI
Библ. ссылка:	Mauchain J., Ohtsubo Y., Hajlaoui M., Papalazarou E., Marsi M., Taleb-Ibrahimi A., Faure J., Kokh K.A., Tereshchenko O.E., Eremeev S.V., Chulkov E.V., Perfetti L. Circular dichroism and superdiffusive transport at the surface of BiTeI // Physical Review Letters. - 2013. - Vol.111. - Iss. 12. - Art.126603. - ISSN 0031-9007. - EISSN 1079-7114.
Внешние системы:	DOI: 10.1103/PhysRevLett.111.126603; SCOPUS: 2-s2.0-84884682234; WoS: 000324638700005;
Реферат:	eng: We investigate the electronic states of BiTeI after the optical pumping with circularly polarized photons. Our data show that photoexcited electrons reach an internal thermalization within 300 fs of the arrival of the pump pulse. Instead, the dichroic contrast generated by the circularly polarized light relaxes on a time scale shorter than 80 fs. This result implies that orbital and spin polarization created by the circular pump pulse rapidly decays via manybody interaction. The persistent dichroism at longer delay times is due to the helicity dependence of superdiffussive transport. We ascribe it to the lack of inversion symmetry in an electronic system far from equilibrium conditions. © 2013 American Physical Society.
Ключевые слова:	Light polarization; Dichroism; Circular polarization; Thermalization; Superdiffusive transport; Optical pumping; Many-body interactions; Inversion symmetry; Electronic systems; Circularly polarized photons; Circularly polarized light; Photoexcited electrons;
Издано:	2013
Физ. характеристика:	126603