5 papers
Disorder-robust trivial Majorana-like states from smooth confinement in chiral superconducting nanowires
Eslam Ahmed, Jorge Cayao, Yukio Tanaka
Near-zero-energy states in Majorana nanowires can arise from topologically trivial mechanisms such as smooth spatial inhomogeneity and disorder, making zero-energy pinning alone in…
Universal Transport Theory for Paired Fractional Quantum Hall States in the Quantum Point Contact Geometry
Eslam Ahmed, Ryoi Ohashi, Hiroki Isobe +2
Even-denominator fractional quantum Hall (FQH) states can be viewed as topological superconductors of composite fermions, supporting a charged chiral mode and …
Anomalous proximity effect under Andreev and Majorana bound states
Eslam Ahmed, Yukio Tanaka, Jorge Cayao
We theoretically study the anomalous proximity effect in a ballistic normal metal/diffusive normal metal/superconductor junction based on Rashba semiconductor nanowire model. The s…
Odd-frequency pairing due to Majorana and trivial Andreev bound states
Eslam Ahmed, Shun Tamura, Yukio Tanaka +1
Majorana and trivial Andreev bound states are predicted to appear in superconductor-semiconductor hybrid systems, but their identification is still a challenging task. Here we cons…
Odd-frequency superconducting pairing due to multiple Majorana edge modes in driven topological superconductors
Eslam Ahmed, Shun Tamura, Yukio Tanaka +1
Majorana zero modes have been shown to be the simplest quasiparticles exhibiting pure odd-frequency pairing, an effect that has so far been theoretically established in the static…