PIRSA:17060049

Possible observation of photons and monopoles in the frustrated pyrochlore Yb2Ti2O7 and Pr2Zr2O7

Matsuda, Y. (2017). Possible observation of photons and monopoles in the frustrated pyrochlore Yb2Ti2O7 and Pr2Zr2O7. Perimeter Institute. https://pirsa.org/17060049

Matsuda, Yuji. Possible observation of photons and monopoles in the frustrated pyrochlore Yb2Ti2O7 and Pr2Zr2O7. Perimeter Institute, Jun. 09, 2017, https://pirsa.org/17060049 

          @misc{ pirsa_PIRSA:17060049,
            doi = {10.48660/17060049},
            url = {https://pirsa.org/17060049},
            author = {Matsuda, Yuji},
            keywords = {Condensed Matter},
            language = {en},
            title = {Possible observation of photons and monopoles in the frustrated pyrochlore Yb2Ti2O7 and Pr2Zr2O7},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {jun},
            note = {PIRSA:17060049 see, \url{https://pirsa.org}}
          }

Yuji Matsuda Kyoto University

DOI 10.48660/17060049
Collection
Talk Type Conference
Subject

Abstract

We report highly unusual heat conduction generated by the spin degrees of freedom in spin liquid states of the pyrochlore magnets Yb2Ti2O7 and Pr2Zr2O7. In Yb2Ti2O7, the excitations propagate a long distance without being scattered, in contrast to the diffusive nature of classical monopoles. In Pr2Zr2O7, the thermal conductivity unexpectedly shows a dramatic enhancement at very low temperature. The low-lying excitations are discussed in terms of a possible emergent photons, coherent gapless spin excitations in a spin-ice manifold.