Observation of Magnetic Pseudogap Behavior in Phosphorus-Doped Silicon.

ABSTRACT: The recent discovery of a Kondo condensate in phosphorus-doped silicon (Si:P) presents its significant potential for achieving novel many-body quantum states. Si:P exhibits Kondo condensation, characterized by an energy gap in the electronic density of states, while the precise nature of its magnetic state has yet to be determined. Here, we utilize electron and muon spin resonance (ESR and µSR) techniques, optical spectroscopy, and specific heat measurements to unravel the magnetic ground state and spin dynamics of Si:P. Both optical and ESR spectroscopy reveal the onset of spin correlations below 150 K. Furthermore, the muon spin relaxation rate exhibits a power-law increase, λ_ZF∼T^-0.26(5), below T_KC ≈ 0.2 K, indicating the emergence of critical spin fluct

SUBMITTER: Lee S 

PROVIDER: S-EPMC12533202 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature