Pauliparamagnetismy YEI mi 2 his m.in es deficit Mt Xpauli B a E EfE yu B 14313 one spin band only Integrated DOS NCE dE DCE Np NIE yupB M 143 NIE yuBB NIE 14313 1432 Do Ee B X Pauli Energymodet pauli 2Mx E paan MB B M Xp B Magnetic exchange Heisenberg no Hariri.in orbit is atoma atom b xspaci 9alrkfbc riltyacriiq.cn e r X spin lit Iti Iii 1117 lit Hi Singlet 5 0 Triplet 5 1 antisymmetric symmetric Spin singlet space symmetric high Coulomb repulsion E JST 52 Spin triplet spaceantisymmetric low Coulomb I favored