5 papers · 1 filter
Perfect Nonreciprocal Axion-polaritons
Abhinava Chatterjee, Chao-Xing Liu
Dynamical axion describes a massive axion quasiparticle that arises from fluctuations of the magnetic order parameter. These fluctuations couple to electromagnetic fields, forming…
Phonon circular birefringence and polarization-filter in Magnetic Topological Insulators
Abhinava Chatterjee, Chao-Xing Liu
The surface phonon Hall viscosity (PHV)-an acoustic analog of axion electrodynamics-emerges from the strain response of magnetic topological insulators and gives rise to novel acou…
Efficiently gate-tunable ferromagnetism in ferromagnetic semiconductor-Dirac semimetal p-n heterojunctions
Emma Steinebronn, Saurav Islam, Abhinava Chatterjee +15
We use molecular beam epitaxy to develop a gate tunable p-n heterojunction that interfaces a canonical Dirac semimetal, CdAs, and a ferromagnetic semiconductor, InM…
Surface Phonon Hall Viscosity Induced Phonon Chirality and Nonreciprocity in Magnetic Topological Insulator Films
Abhinava Chatterjee, Chao-Xing Liu
The surface half-quantum Hall effect, a hallmark consequence of axion electrodynamics, can be induced by gapping out the surface states of topological insulators through surface ma…
Localized interfacial Phonon Modes at the Electronic Axion Domain Wall
Abhinava Chatterjee, Mourad Oudich, Yun Jing +1
The most salient feature of electronic topological states of matter is the existence of exotic electronic modes localized at the surface or interface of a sample. In this work, in…