Abstract
Using single-crystal neutron and x-ray diffraction, we discovered a charge density wave (CDW) below 320 K, which accounts for the long-sought origin of the heat capacity and resistivity anomalies in . The modulation wave vector, , is intriguingly similar to the incommensurate wave vector of . shows an unusual temperature dependence, shifting from commensurate to incommensurate position upon cooling and becoming locked at aproximately (0.42 0 0) near 180 K. Bulk measurements indicate a crossover toward a correlated coherent state around the same temperature, suggesting an interplay between the CDW and Kondo-lattice-like coherence before coexisting antiferromagnetic order sets in at K.
- Received 20 September 2019
- Revised 29 June 2020
- Accepted 29 June 2020
- Corrected 1 October 2020
DOI:https://doi.org/10.1103/PhysRevB.102.041112
©2020 American Physical Society
Physics Subject Headings (PhySH)
Corrections
1 October 2020
Correction: A clarification has been made to a sentence pertaining to the critical exponent β in the paragraph discussing Fig. 3.