  We study the magnetoelectric and magnetothermal transport properties of
noncentrosymmetric metals using semiclassical Boltzmann transport formalism by
incorporating the effects of Berry curvature and orbital magnetic moment. These
effects impart quadratic-B dependence to the magnetoelectric and magnetothermal
conductivities, leading to intriguing phenomena such as the planar Hall effect,
negative magnetoresistance, planar Nernst effect, and negative Seebeck effect.
The transport coefficients associated with these effects show the usual
oscillatory behavior with respect to the angle between the applied electric
field and magnetic field. The bands of noncentrosymmetric metals are split by
Rashba spin-orbit coupling except at a band touching point. The difference in
Fermi surface topology above and below the band touching point is reflected in
the nature of magnetoresistance and planar Hall conductivity. For Fermi energy
below (above) the band touching point, giant (diminished) negative
magnetoresistance is observed. The absolute magnetoresistance and planar Hall
conductivity show a decreasing (increasing) trend with Rashba coupling
parameter for Fermi energy below (above) the band touching point.
