Kondo Lattice Behavior in the Ordered Dilute Magnetic Semiconductor Yb_{14-x}La_xMnSb_{11}

B.C. Sales; E. J. Nagler; P. Khalifah; R. E. Sykora; R. Jin & D. Mandrus; T. P. Enck

arxiv: cond-mat/0508132 · v1 · submitted 2005-08-04 · ❄️ cond-mat.str-el

Kondo Lattice Behavior in the Ordered Dilute Magnetic Semiconductor Yb_(14-x)La_xMnSb₁₁

B.C. Sales , P. Khalifah , T. P. Enck , E. J. Nagler , R. E. Sykora , R. Jin & D. Mandrus This is my paper

classification ❄️ cond-mat.str-el

keywords magneticcompoundskondolatticemnsbbehaviorbelowcapacity

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We report Hall, magnetic, heat capacity and doping studies from single crystals of Yb_14MnSb_11 and Yb_13.3La_0.7MnSb_11. These heavily doped semiconducting compounds are ferromagnetic below 53 K and 39 K respectively. The renormalization of the carrier mass from 2 me near room temperature to 15 me at 5 K, plus the magnetic evidence for partial screening of the Mn magnetic moments suggest that these compounds represent rare examples of an underscreened Kondo lattice with T_K = 350 K.

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Kondo Lattice Behavior in the Ordered Dilute Magnetic Semiconductor Yb_(14-x)La_xMnSb₁₁

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