Spin-polarized surface resonances accompanying topological surface state formation

Chris Jozwiak (), Jonathan A. Sobota, Kenneth Gotlieb, Alexander F. Kemper, Costel R. Rotundu, Robert J. Birgeneau, Zahid Hussain, Dung-Hai Lee, Zhi-Xun Shen and Alessandra Lanzara ()
Additional contact information
Chris Jozwiak: Advanced Light Source, Lawrence Berkeley National Laboratory
Jonathan A. Sobota: Advanced Light Source, Lawrence Berkeley National Laboratory
Kenneth Gotlieb: Graduate Group in Applied Science and Technology, University of California
Alexander F. Kemper: North Carolina State University
Costel R. Rotundu: Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
Robert J. Birgeneau: Lawrence Berkeley National Laboratory
Zahid Hussain: Advanced Light Source, Lawrence Berkeley National Laboratory
Dung-Hai Lee: Lawrence Berkeley National Laboratory
Zhi-Xun Shen: Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
Alessandra Lanzara: Lawrence Berkeley National Laboratory

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Topological insulators host spin-polarized surface states born out of the energetic inversion of bulk bands driven by the spin-orbit interaction. Here we discover previously unidentified consequences of band-inversion on the surface electronic structure of the topological insulator Bi2Se3. By performing simultaneous spin, time, and angle-resolved photoemission spectroscopy, we map the spin-polarized unoccupied electronic structure and identify a surface resonance which is distinct from the topological surface state, yet shares a similar spin-orbital texture with opposite orientation. Its momentum dependence and spin texture imply an intimate connection with the topological surface state. Calculations show these two distinct states can emerge from trivial Rashba-like states that change topology through the spin-orbit-induced band inversion. This work thus provides a compelling view of the coevolution of surface states through a topological phase transition, enabled by the unique capability of directly measuring the spin-polarized unoccupied band structure.

Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms13143 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13143

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms13143

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().