Coherence length

Scattering

Economics

Momentum (technical analysis)

Physics

Finance

Electron

Magnetoresistance

Fermion

Quantum mechanics

Electrical resistivity and conductivity

Superconductivity

Dirac fermion

Magnetic field

Mean free path

Coherence (philosophical gambling strategy)

Spin (aerodynamics)

Condensed matter physics

Thermodynamics

Nature Communications

Weyl and Dirac fermions have created much attention in condensed matter physics and materials science. Recently, several additional distinct types of fermions have been predicted. Here, we report ultra-high electrical conductivity in MoP at low temperature, which has recently been established as a triple point Fermion material. Here we show that the electrical resistivity is 6 n-ohm cm at 2 K with a large mean free path of 11 microns. de Haas-van Alphen oscillations reveal spin splitting of the Fermi surfaces. In contrast to noble metals with similar conductivity and number of carriers, the magnetoresistance in MoP does not saturate up to 9 T at 2 K. Interestingly, the momentum relaxing time of the electrons is found to be more than 15 times larger than the quantum coherence time. This difference between the scattering scales shows that momentum conserving scattering dominates in MoP at low temperatures.

Extremely high conductivity observed in the triple point topological metal MoP