Twisted light: self-torque could be used to manipulate molecules. (Courtesy: iStock/VikaSuh) Physicists in Spain and the US have shown that the orbital angular momentum, or twistedness, of light can ...
The (Ga, Mn)As ferromagnetic semiconductors used in our work are favourable candidates for observing the optical spin transfer torque 1,2. The direct-gap GaAs host allows the generation of a high ...