Testing the Elliott-Yafet spin-relaxation mechanism in KC8; a model   system of biased graphene
  Temperature dependent electron spin resonance (ESR) measurements are reported on stage 1 potassium doped graphite, a model system of biased graphene. The ESR linewidth is nearly isotropic and although the g-factor has a sizeable anisotropy, its majority is shown to arise due to macroscopic magnetization. Albeit the homogeneous ESR linewidth shows an unusual, non-linear temperature dependence, it appears to be proportional to the resistivity which is a quadratic function of the temperature. These observations suggests the validity of the Elliott-Yafet relaxation mechanism in KC8 and allows to place KC8 on the empirical Beuneu-Monod plot among ordinary elemental metals. 
G\'abor F\'abi\'an, Bal\'azs D\'ora, \'Agnes Antal, L\'en\'ard   Szolnoki, L\'aszl\'o Korecz, Antal Rockenbauer, Norbert M. ...
cond-mat.mtrl-sci cond-mat.str-el