Transport properties of CrP

CrP has many exotic physical properties due to a four-fold degenerate band crossing at the Y point of the Brillouin zone, which is protected by the nonsymmorphic symmetry of the space group. We carried out the heat capacity, electrical and thermal transport measurements on CrP and extracted the electron thermal conductivity. Due to the difference in energy and momentum relaxation time during electron-phonon inelastic scattering, the normalized Lorentz number decreases below about 160 K. Below 25.6 K, the normalized Lorentz number begins to recover, which is due to the dominance of elastic scattering between electrons and defects at low temperatures.

Automated summary

CrP has unique physical properties due to the nonsymmorphic symmetry of the space group, resulting in a four-fold degenerate band crossing at the Y point of the Brillouin zone. We conducted various measurements on CrP, including heat capacity, electrical and thermal transport, and extracted the electron thermal conductivity. The normalized Lorentz number decreases below 160 K due to differences in energy and momentum relaxation time during electron-phonon inelastic scattering, but begins to recover below 25.6 K due to the dominance of elastic scattering between electrons and defects at low temperatures.