Electrically controlled spin polarized current in Dirac semimetals

We propose a highly tunable $$100\%$$ 100 % spin-polarized current generated in a spintronic device based on a Dirac semimetal (DSM) under a magnetic field, which can be achieved merely by controlling electrical parameters, i.e. the gate voltage, the chemical potential in the lead and the coupling strength between the leads and the DSM. These parameters are all related to the special properties of a semimetal. The spin polarized current generated by gate voltage is guaranteed by its semimetallic feature, because of which the density of state vanishes near Dirac nodes. The barrier controlled current results from the different distance of Weyl nodes generated by the Zeeman field. And the coupling strength controlled spin polarized current originates from the surface Fermi arcs. This DSM-based spintronic device is expected to be realized in $$\hbox {Cd}_{3}\hbox {As}_{2}$$ Cd 3 As 2 experimentally.

An electrically switchable anti-ferroelectric bilayer In2Se3 based opto-spintronic device

The spin dependent photocurrent can be generated via the photogalvanic effect and largely tuned in an anti-ferroelectric bilayer In2Se3 based opto-spintronic device.

Designing new ferromagnetic double perovskites: the coexistence of polar distortion and half-metallicity

The concurrence of half-metallicity and polar nature in Ca2MnVO6 and Ba2MnVO6 double perovskites making them suitable candidates for spintronic device applications.