posted on 2019-02-20, 00:00authored byEilam
Z. B. Smolinsky, Avner Neubauer, Anup Kumar, Shira Yochelis, Eyal Capua, Raanan Carmieli, Yossi Paltiel, Ron Naaman, Karen Michaeli
We study GaAs/AlGaAs
devices hosting a two-dimensional electron
gas and coated with a monolayer of chiral organic molecules. We observe
clear signatures of room-temperature magnetism, which is induced in
these systems by applying a gate voltage. We explain this phenomenon
as a consequence of the spin-polarized charges that are injected into
the semiconductor through the chiral molecules. The orientation of
the magnetic moment can be manipulated by low gate voltages, with
a switching rate in the megahertz range. Thus, our devices implement
an efficient, electric field-controlled magnetization, which has long
been desired for their technical prospects.