Protracted Kondo coherence with dilute carrier density in Cerium based nickel pnictides

29 Sep 2019 Zhang Peng Liu Bo Zhang Shengli Haule K. Dai Jianhui

Nozi$\grave{e}$res' exhaustion theory argues the temperature for coherently screening of all local moments in Kondo lattice could be much lower than the temperature of single moment screening with insufficient number of conduction electrons. Recent experiment [Luo et al, PNAS, 112,13520 (2015)] indicates the cerium based nickel pnictides $CeNi_{2-\delta}As_2 (\delta\approx0.28)$ with low carrier density is an ideal material to exam such protracted Kondo screening... (read more)

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