Far-infrared detection using weyl semimetals

A method of detecting incident radiation, the method comprising:

• illuminating a noncentrosymmetric Weyl semimetal with the incident radiation, the noncentrosymmetric Weyl semimetal generating a photocurrent in response to the incident radiation;
• and
• conducting the photocurrent out of the noncentrosymmetric Weyl semimetal via electrodes in electrical communication with the noncentrosymmetric Weyl semimetal.

A detector comprising:

• a Weyl semimetal to produce a photocurrent in response to circularly polarized incident radiation, the Weyl semimetal having a tilted Weyl dispersion and an energy band structure lacking inversion symmetry at a wavelength of the circularly polarized incident radiation;
• and
• a pair of electrodes, in electrical communication with the Weyl semimetal, to conduct the photocurrent out of the Weyl semimetal.