173 citations · 322 across the 9 of their papers we have counts for
9 papers
Non-collinear 2k antiferromagnetism in the Zintl semiconductor EuInSb
Vincent C. Morano, Jonathan Gaudet, Nicodemos Varnava +10
EuInSb is an orthorhombic non-symmorphic small band gap semiconductor with three distinct Eu sites and two low-temperature magnetic phase transitions. The materi…
Electron Doping of a Double Perovskite Flat-band System
Lun Jin, Nicodemos Varnava, Danrui Ni +5
Electronic structure calculations indicate that the Sr2FeSbO6 double perovskite has a flat-band set just above the Fermi level that includes contributions from ordinary sub-bands w…
Magnetic phase crossover in strongly correlated EuMn2P2
Tanya Berry, Nicodemos Varnava, Dominic Ryan +12
Strong electron correlations underlie a plethora of electronic and magnetic components and devices and are often used to identify and probe novel ground states in quantum materials…
Dipolar Magnetic Interactions and A-type Antiferromagnetic Order in the Zintl Phase Insulator EuZn2P2
Tanya Berry, Veronica J. Stewart, Benjamin W. Y. Redemann +4
Zintl phases, containing strongly covalently bonded frameworks with separate ionically bonded ions, have emerged as a critical materials family in which to couple magnetism and str…
Engineering magnetic topological insulators in Eu Zintls
Nicodemos Varnava, Tanya Berry, Tyrel M. McQueen +1
Magnetic topological insulator provide a prominent material platform for quantum anomalous Hall physics and axion electrodynamics. However, the lack of material realizations with c…
Anomalous Residual Surface Conductivity in a Superconductor with Strong Spin-Orbit Coupling
J. R. Chamorro, P. Chauhan, C. Sun +10
Conventional BCS superconductors are expected to exhibit a conductivity with vanishing dissipation with decreasing temperature. While bulk physical properties measurements indicate…
Controlling a quantum point junction on the surface of an antiferromagnetic topological insulator
Nicodemos Varnava, Justin H. Wilson, J. H. Pixley +1
The abstract notion of topology has led to profound insights into real materials. Notably, the surface and edges of topological materials can host physics, such as unidirectional c…
Axion coupling in the hybrid Wannier representation
Nicodemos Varnava, Ivo Souza, David Vanderbilt
Many magnetic point-group symmetries induce a topological classification on crystalline insulators, dividing them into those that have a nonzero quantized Chern-Simons magnetoelect…
Surfaces of Axion Insulators
Nicodemos Varnava, David Vanderbilt
Axion insulators are magnetic topological insulators in which the non-trivial index is protected by inversion symmetry instead of time-reversal symmetry. The natural…