Conversion from mT (Millitesla) to MHz (Megahertz).

nu = mt2mhz(B)
nu = mt2mhz(B,g)

mt2mhz takes the magnetic field value of B, assumes that it is in units of mT (Millitesla), converts it to frequency in units of MHz (Megahertz) and returns the result in nu.

g gives the g factor for the conversion. If it is omitted, the g factor of the free electron 2.0023... is used (see gfree).

B can be a vector of values. In this case, g can be a scalar or a vector of the same size as B.

The conversion is based on the formula

An electron spin with a g factor of 2.1 in a magnetic field of 350 mT has a resonance frequency of about 10.3 GHz.

nu = mt2mhz(350,2.1)/1e3

nu =
   10.2872

mhz2mt