405 citations · 4.3k across the 72 of their papers we have counts for
6 papers · 2 filters
Restoring Pristine Bi2Se3 Surface with an Effective Se Decapping Process
Jixia Dai, Wenbo Wang, Matthew Brahlek +4
High quality thin films of topological insulators (TI) such as Bi2Se3 have been successfully synthesized by molecular beam epitaxy (MBE). Although the surface of MBE films can be p…
Transport Properties of Topological Insulators: Band Bending, Bulk Metal-to-Insulator Transition, and Weak Anti-Localization
Matthew Brahlek, Nikesh Koirala, Namrata Bansal +1
We reanalyze some of the critical transport experiments and provide a coherent understanding of the current generation of topological insulators (TIs). Currently TI transport studi…
Robust topological surface states of Bi2Se3 thin films on amorphous SiO2/Si substrate and a large ambipolar gating effect
Namrata Bansal, Nikesh Koirala, Matthew Brahlek +6
The recent emergence of topological insulators (TI) has spurred intensive efforts to grow TI thin films on various substrates. However, little is known about how robust the topolog…
Emergence of decoupled surface transport channels in bulk insulating Bi2Se3 thin films
Matthew Brahlek, Nikesh Koirala, Maryam Salehi +2
In ideal topological insulator (TI) films the bulk state, which is supposed to be insulating, should not provide any electric coupling between the two metallic surfaces. However, t…
Observation of inverse spin Hall effect in bismuth selenide
Praveen Deorani, Jaesung Son, Karan Banerjee +4
Bismuth Selenide (Bi2Se3) is a topological insulator exhibiting helical spin polarization and strong spin-orbit coupling. The spin-orbit coupling links the charge current to spin c…
Transferring MBE-grown topological insulator films to arbitrary substrates and Metal-insulator transition via Dirac gap
Namrata Bansal, Myung Rae Cho, Matthew Brahlek +6
Mechanical exfoliation of bulk crystals has been widely used to obtain thin topological insulator (TI) flakes for device fabrication. However, such a process produces only micro-si…