%0 Journal Article %1 mendezvalderrama2023tlinear %A Mendez-Valderrama, J. F. %A Tulipman, Evyatar %A Zhakina, Elina %A Mackenzie, Andrew P. %A Berg, Erez %A Chowdhury, Debanjan %D 2023 %I Proceedings of the National Academy of Sciences %J Proc. Natl. Acad. Sci. %K b %N 36 %P e2305609120-- %R 10.1073/pnas.2305609120 %T T-linear resistivity from magneto-elastic scattering: Application to PdCrO$_2$ %U https://doi.org/10.1073/pnas.2305609120 %V 120 %X An electronic solid with itinerant carriers and localized magnetic moments represents a paradigmatic strongly correlated system. The electrical transport properties associated with the itinerant carriers, as they scatter off these local moments, have been scrutinized across a number of materials. Here, we analyze the transport characteristics associated with ultraclean PdCrO2?a quasi-two-dimensional material consisting of alternating layers of itinerant Pd-electrons and Mott-insulating CrO2 layers?which shows a pronounced regime of T-linear resistivity over a wide range of intermediate temperatures. By contrasting these observations to the transport properties in a closely related material PdCoO2, where the CoO2 layers are band-insulators, we can rule out the traditional electron?phonon interactions as being responsible for this interesting regime. We propose a previously ignored electron-magneto-elastic interaction between the Pd-electrons, the Cr local moments and an out-of-plane phonon as the main scattering mechanism that leads to the significant enhancement of resistivity and a T-linear regime in PdCrO2 at temperatures far in excess of the magnetic ordering temperature. We suggest a number of future experiments to confirm this picture in PdCrO2 as well as other layered metallic/Mott-insulating materials.

@article{mendezvalderrama2023tlinear, abstract = {An electronic solid with itinerant carriers and localized magnetic moments represents a paradigmatic strongly correlated system. The electrical transport properties associated with the itinerant carriers, as they scatter off these local moments, have been scrutinized across a number of materials. Here, we analyze the transport characteristics associated with ultraclean PdCrO2?a quasi-two-dimensional material consisting of alternating layers of itinerant Pd-electrons and Mott-insulating CrO2 layers?which shows a pronounced regime of T-linear resistivity over a wide range of intermediate temperatures. By contrasting these observations to the transport properties in a closely related material PdCoO2, where the CoO2 layers are band-insulators, we can rule out the traditional electron?phonon interactions as being responsible for this interesting regime. We propose a previously ignored electron-magneto-elastic interaction between the Pd-electrons, the Cr local moments and an out-of-plane phonon as the main scattering mechanism that leads to the significant enhancement of resistivity and a T-linear regime in PdCrO2 at temperatures far in excess of the magnetic ordering temperature. We suggest a number of future experiments to confirm this picture in PdCrO2 as well as other layered metallic/Mott-insulating materials.}, added-at = {2023-12-18T11:01:57.000+0100}, author = {Mendez-Valderrama, J. F. and Tulipman, Evyatar and Zhakina, Elina and Mackenzie, Andrew P. and Berg, Erez and Chowdhury, Debanjan}, biburl = {https://www.bibsonomy.org/bibtex/237ba6fbb83f260a1490c95a9412e78ca/ctqmat}, comment = {doi: 10.1073/pnas.2305609120}, day = 28, doi = {10.1073/pnas.2305609120}, interhash = {90d37f5a4127268fdda16e651e1bce06}, intrahash = {37ba6fbb83f260a1490c95a9412e78ca}, journal = {Proc. Natl. Acad. Sci.}, keywords = {b}, month = {08}, number = 36, pages = {e2305609120--}, publisher = {Proceedings of the National Academy of Sciences}, timestamp = {2023-12-18T11:01:57.000+0100}, title = {T-linear resistivity from magneto-elastic scattering: Application to PdCrO$_\mathbf{2}$}, url = {https://doi.org/10.1073/pnas.2305609120}, volume = 120, year = 2023 }