A. Damascelli
Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
Spin-orbit coupling is essential to the quantum-mechanical description of atomic energy levels. Yet its most spectacular consequences are found in the low-energy electronic structure of solids, where this atomic-like interaction plays a key role in the emergence of some of the most unconventional quantum phenomena. In this talk I will show how spin and angle-resolved photoemission spectroscopy, in combination with in-situ doping techniques and density functional theory, can be used to unveil the role of spin-orbit interaction in the emergence of relativistic Mott insulating behavior in Na2IrO3 [1], unconventional superconductivity in Sr2RuO4 [2,3], and the entangled spin-orbital texture in topological insulators. For the latter case, I will also discuss the full spin-polarization-control that can be achieved via photoelectron interference in Bi2Se3 [4], and the interplay of polarity and topology-driven surface states in the topological Kondo insulator SmB6 [5].
[1] R. Comin et al., Phys. Rev. Lett. 109, 266406 (2012).
[2] M.W. Haverkort et al., Phys. Rev. Lett. 101, 026406 (2008).
[3] C.N. Veenstra et al., arXiv: 1303.5444 (2013).
[4] Z.-H. Zhu et al., Phys. Rev. Lett. 110, 216401 (2013).
[5] Z.-H. Zhu et al., Phys. Rev. Lett. 111, 216402 (2013).