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Search for Majorana fermions in multiband semiconducting nanowires
Roman M. Lutchyn, Tudor Stanescu, S. Das Sarma
We study multiband semiconducting nanowires proximity-coupled with an s-wave superconductor. We show that when odd number of subbands are occupied the system realizes non-trivial t…
Non-Abelian quantum order in spin-orbit-coupled semiconductors: The search for topological Majorana particles in solid state systems
Jay D. Sau, Sumanta Tewari, Roman Lutchyn +2
We show that an ordinary semiconducting thin film with spin-orbit coupling can, under ap- propriate circumstances, be in a quantum topologically ordered state supporting exotic Maj…
Tunneling of anyonic Majorana excitations in topological superconductors
Meng Cheng, Roman M. Lutchyn, Victor Galitski +1
We consider topological superconductors and topological insulator/superconductor structures in the presence of multiple static vortices that host Majorana modes and focus on the Ma…
Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
Roman M. Lutchyn, Jay D. Sau, S. Das Sarma
We propose and analyze theoretically an experimental setup for detecting the elusive Majorana particle in semiconductor-superconductor heterostructures. The experimental system con…
Proximity effect at the superconductor - topological insulator interface
Tudor D. Stanescu, Jay D. Sau, Roman M. Lutchyn +1
We study the excitation spectrum of a topological insulator in contact with an s-wave superconductor, starting from a microscopic model, and develop an effective low-energy model f…