Inside Back Cover: Circular dichroism in angle‐resolved photoemission spectroscopy of topological insulators (Phys. Status Solidi RRL 1–2/2013). Issue 1 (12th February 2013)

• Record Type: Journal Article
• Authors: Wang, Yihua; Gedik, Nuh
• Is Part Of: Physica status solidi. Volume 7:Issue 1/2(2013:Jan.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2013-02-12
• Subjects: Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201390005
• Languages: English
• ISSNs: 1862-6254

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The cover image shows the electronic structure of a prototypical topological insulator Bi<sub>2</sub>Te<sub>3</sub> in the energy‐momentum space as obtained by angle‐resolved photoemission spectroscopy. Blue (red) represents positive (negative) intensity difference between spectra taken with left‐ versus right‐circularly polarized light. The flower shape corresponds to the surface states of Bi<sub>2</sub>Te<sub>3</sub>, which exhibits strong hexagonal distortion at the top. The distortion is reduced moving towards the core (Dirac point). The three‐fold symmetric circular dichroism pattern on the surface states is a direct consequence of the strong spin‐orbit coupling of topological insulators and can be exploited to map out the electron spin structure with respect to momentum (see the article by Yihua Wang and Nuh Gedik, <ext-link ext-link-type="doi" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">pp. 64–71</ext-link>). The circular base in this image corresponds to states below the Dirac point which are hybridized states between surface and bulk. The circular dichroism intensity is much weaker on these states.</p> <p> <boxed-text content-type="graphic" position="anchor" orientation="portrait"> <graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg1v583jtf" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /> </boxed-text> </p> </abstract>