 DOCUMENT METADATASLAC Publication: SLAC-PUB-14504
SLAC Release Date: August 19, 2011
Common Origin of the Circular-dichroism Pattern in ARPES of SrTiO3 and CuxBi2Se3
Bell, Christopher.
We investigate circular dichroism in the angular distribution (CDAD) of photoelectrons from SrTiO3:Nb and CuxBi2 Se3 recorded by 7-eV laser ARPES. In addition to the well-known node that occurs in CDAD when the incidence plane matches the mirror plane of the crystal, we show that another type of node occurs when the mirror plane of the crystal is vertical to the incidence plane and the electronic state is two dimensional. The flower-shaped CDADs occurring around the Fermi level of SrTiO3:Nb and... Show Full Abstract
We investigate circular dichroism in the angular distribution (CDAD) of photoelectrons from SrTiO3:Nb and CuxBi2 Se3 recorded by 7-eV laser ARPES. In addition to the well-known node that occurs in CDAD when the incidence plane matches the mirror plane of the crystal, we show that another type of node occurs when the mirror plane of the crystal is vertical to the incidence plane and the electronic state is two dimensional. The flower-shaped CDADs occurring around the Fermi level of SrTiO3:Nb and around the Dirac point of CuxBi2 Se3 are explained on equal footings. A surface-state-to-surface-resonance transition is indicated for the topological state of CuxBi2 Se3. Show Partial Abstract
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