Antiferromagnetic Kondo lattice in the layered compound and comparison to the superconductor
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Nanjing Univ. (China). National Lab. of Solid State Microstructures
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). James Franck Inst. and Dept. of Physics
ZrCuSi2-type CePd1-xBi2 crystals were obtained from excess Bi flux. Magnetic susceptibility measurements reveal that CePd1-xBi2 is a highly anisotropic antiferromagnet with transition temperature at 6 K, and a magnetic-field-induced metamagnetic transition at 5 T. An enhanced Sommerfeld coefficient of γ of 0.199 J-mol-Ce-1K-2 obtained from specific heat measurements suggests a moderate Kondo effect in CePd1-xBi2. In addition to the antiferromagnetic peak the resistivity curve shows a shoulder-like behavior which could be attributed to the presence of Kondo effect and crystal-electric-field effects in this compound. Magnetoresistance and Hall effect measurements suggest an interplay between Kondo and crystal-electric-field effects which reconstructs the Fermi surface topology of CePd1-xBi2 around 75 K. Electronic structure calculations reveal the Pd vacancies are important to the magnetic structure and enhance the crystal-electric-field effects which quench the orbital moment of Ce at low temperatures.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1355774
- Alternate ID(s):
- OSTI ID: 1193901
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 4; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Magnetic field-tuned Fermi liquid in a Kondo insulator
|
journal | December 2019 |
Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling | text | January 2016 |
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