Skew band structure and anomalous conductivity of PdCrO$_2$
Abstract
A model of magnetic interaction of CrO$_2$ and Pd hexagonal layers in PdCrO$_2$ is proposed. Since Cr-O-Pd bridges do not provide an interlayer magnetic coupling in case of a 120$^0$ magnetic ordering, a direct exchange interaction between magnetic chromium ions and conductive palladium layers is assumed. It is shown that this interaction leads to a novel state of itinerant electrons (skew bands). It is characterized by abnormally high conductivity at low temperatures due to strong suppression of umklapp electron-phonon scattering.
- Publication:
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arXiv e-prints
- Pub Date:
- June 2020
- DOI:
- 10.48550/arXiv.2006.05453
- arXiv:
- arXiv:2006.05453
- Bibcode:
- 2020arXiv200605453K
- Keywords:
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- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Other Condensed Matter
- E-Print:
- 4 pages, 3 figures