The effect of a helical magnetic field on the dispersion relation of electrons in one- and two-dimensional systems has been studied. The helical magnetic order in CrO₂ dielectric spacers in PdCrO₂ creates an unusual spin structure on the Fermi surface in hexagonal palladium layers ensuring electron transport. In this case, umklapp electron–phonon scattering is strongly suppressed, which results in an anomalously high conductivity at low temperatures observed experimentally.

中文翻译：

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螺旋磁序和反常电导率PdCrO 2

研究了螺旋磁场对一维和二维系统中电子的色散关系的影响。PdCrO ₂中CrO ₂介电垫片中的螺旋磁序在六角形钯层的费米表面上形成了不寻常的自旋结构，从而确保了电子传输。在这种情况下，umklapp电子-声子的散射被强烈抑制，这导致在实验观察到的低温下异常高的电导率。