Anomalous metallic state in compensated metal with large anisotropic magnetoresistance

¹ School of Instrumentation Science and Opto-electronics Engineering, Beijing Information Science and Technology University - Beijing 100192, China
² Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences Beijing 100190, China
³ Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University Beijing 100192, China

Received: 29 January 2025
Accepted: 3 July 2025

Abstract

We have successfully synthesized high-quality single crystals of Cr₃P for the first time and systematically investigated its physical properties through heat capacity, magnetic susceptibility, resistivity, Hall resistivity, and magnetoresistance measurements. No distinct phase transitions were observed in either magnetic susceptibility or specific heat capacity. The magnetoresistance and Hall resistivity data painted a picture of multi-band carriers and anisotropy, with a minority of holes in the Fermi liquid region exhibiting a large mobility and significant magnetoresistance , which is related to carrier compensation. The resistivity can be well described by the Fermi liquid and electron-phonon coupling model at temperatures below 15 K. However, the deviation from linearity and the abnormally large saturation of resistivity near room temperature indicate the presence of an anomalous metallic transport state that differs from conventional Boltzmann transport. We also discussed that the different magnitudes of saturation resistivity under varying crystal qualities may be associated with the crystal quality and anisotropy.