  Transmission of a normally incident plane wave through a metasurface with
bicontrollable subwavelength scattering elements was simulated using a
commercial software. Some pixels comprising the $H-shaped scattering elements
were made of a magnetostatically controllable material whereas the remaining
pixels were made of a thermally controllable material, the metasurface designed
to operate in the terahertz spectral regime. The co-polarized transmission
coefficients were found to exhibit stopbands that shift when either a
magnetostatic field is applied or the temperature is increased or both.
Depending on spectral location of the stopband, either the magnetostatic field
gives coarse control and temperature gives fine control or vice versa. The
level of magnetostatic control depends on the magnetostatic-field
configuration.
