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A large enhancement of the thermoelectric figure of merit is reported in single crystalline films of CrN. The strong reduction of the lattice thermal conductivity in the rock-salt phase of this material is shown to be related to intrinsic lattice instabilities, which is similar to the resonant bonding effect proposed for cubic IV-VI compounds. These results demonstrate that useful ideas from classic thermoelectrics and phase change materials can be extended to transition metal nitrides and oxides.


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This is the accepted version of the following article: Quintela, Camilo X.; Podkaminer, Jacob P.; Luckyanova, Maria N.; Paudel, Tula R.; Thies, Eric L.; Hillsberry, Daniel A.; Tenne, Dmitri A.; Tsymbal, Evgeny Y.; Chen, Gang; Eom, Chang-Beom; and Rivadulla, Francisco. (2015). Epitaxial CrN Thin Films with High Thermoelectric Figure of Merit. Advanced Materials, 27(19), 3032-3037, which has been published in final form at doi: 10.1002/adma.201500110

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