title: Polytypic phase transitions in metal intercalated Bi2Se3.
abstract: The temperature and concentration dependent phase diagrams of zero-valent copper, cobalt, and iron intercalated bismuth selenide are investigated using in situ transmission electron microscopy. Polytypic phase transitions associated with superlattice formation along with order-disorder transitions of the guest intercalant are determined. Dual-element intercalants of CuCo, CuFe, and CoFe-Bi2Se3are also investigated. Hexagonal and striped domain formation consistent with two-dimensional ordering of the intercalant and Pokrovksy-Talapov theory is identified as a function of concentration. These studies provide a complete picture of the structural behavior of zero-valent metal intercalated Bi2Se3.
authors.affiliation: Department of Chemistry, Brown University, Providence RI 02912, USA.
authors.forename: Mengjing
authors.initials: M
authors.lastname: Wang
authors.forename: Kristie J
authors.initials: KJ
authors.lastname: Koski