反強磁性Crにおける抵抗ひずみ感度の等方性に関する検討

抄録

  We studied the isotropy of the Gauge factor (GF) of antiferromagnetic Cr in the commensurate spin-density-wave state. First-principles calculations were performed to compare the strain sensitivity of resistance under uniaxial stress along the [100] and [110] direction of crystal lattice. We found that the GF of Cr, which was approximately estimated from the result of calculating the density of states at the Fermi level, can be considered to be isotropic in the small strain range of less than 1%, reflecting the isotropic response of magnetism of Cr to uniaxial strain.