Complex magnetism and strong electronic correlations in
Abstract
Single-crystal x-ray diffraction, magnetic susceptibility, magnetization, heat capacity, and electrical resistivity measurements are reported for the new tetragonal compound Ce2PdGe3, which forms in the space group P42/mmc (No. 131)—a relative of the α₋ThSi2-type structure. Measurements reveal a two-part antiferromagnetic phase transition at TN,1=10.7 K and TN,2=9.6 K and subsequent ferromagnetlike ordering near TC≈2.25 K. The ordered ground state emerges from a lattice of Ce ions that are hybridized with the conduction electrons, as revealed by the enhanced electronic coefficient of the specific heat γ≈50 mJ/mol-Ce-K2 (extrapolated to T=0 for T < TC). Lastly, electronic structure calculations reveal a Fermi surface that includes sheets with distinct nesting vectors. We find chemical/structural disorder also plays an important role, as evidenced by results from single-crystal x-ray diffraction, the width of the peaks in the heat capacity at TN and TC, and the small residual resistivity ratio RRR=ρ300K/ρ0=1.8.
- Authors:
-
- Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
- Florida A&M Univ. and Florida State Univ. College of Engineering, Tallahassee, FL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab); Florida A&M Univ. and Florida State Univ. College of Engineering, Tallahassee, FL (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1185651
- Alternate Identifier(s):
- OSTI ID: 1181350
- Grant/Contract Number:
- AC05-00OR22725; DMR-1157490; SC0008832
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 3; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Baumbach, R. E., Gallagher, A., Besara, T., Sun, J., Siegrist, T., Singh, D. J., Thompson, J. D., Ronning, F., and Bauer, E. D. Complex magnetism and strong electronic correlations in Ce2PdGe3. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.91.035102.
Baumbach, R. E., Gallagher, A., Besara, T., Sun, J., Siegrist, T., Singh, D. J., Thompson, J. D., Ronning, F., & Bauer, E. D. Complex magnetism and strong electronic correlations in Ce2PdGe3. United States. https://doi.org/10.1103/PhysRevB.91.035102
Baumbach, R. E., Gallagher, A., Besara, T., Sun, J., Siegrist, T., Singh, D. J., Thompson, J. D., Ronning, F., and Bauer, E. D. Mon .
"Complex magnetism and strong electronic correlations in Ce2PdGe3". United States. https://doi.org/10.1103/PhysRevB.91.035102. https://www.osti.gov/servlets/purl/1185651.
@article{osti_1185651,
title = {Complex magnetism and strong electronic correlations in Ce2PdGe3},
author = {Baumbach, R. E. and Gallagher, A. and Besara, T. and Sun, J. and Siegrist, T. and Singh, D. J. and Thompson, J. D. and Ronning, F. and Bauer, E. D.},
abstractNote = {Single-crystal x-ray diffraction, magnetic susceptibility, magnetization, heat capacity, and electrical resistivity measurements are reported for the new tetragonal compound Ce2PdGe3, which forms in the space group P42/mmc (No. 131)—a relative of the α₋ThSi2-type structure. Measurements reveal a two-part antiferromagnetic phase transition at TN,1=10.7 K and TN,2=9.6 K and subsequent ferromagnetlike ordering near TC≈2.25 K. The ordered ground state emerges from a lattice of Ce ions that are hybridized with the conduction electrons, as revealed by the enhanced electronic coefficient of the specific heat γ≈50 mJ/mol-Ce-K2 (extrapolated to T=0 for T < TC). Lastly, electronic structure calculations reveal a Fermi surface that includes sheets with distinct nesting vectors. We find chemical/structural disorder also plays an important role, as evidenced by results from single-crystal x-ray diffraction, the width of the peaks in the heat capacity at TN and TC, and the small residual resistivity ratio RRR=ρ300K/ρ0=1.8.},
doi = {10.1103/PhysRevB.91.035102},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 3,
volume = 91,
place = {United States},
year = {Mon Jan 05 00:00:00 EST 2015},
month = {Mon Jan 05 00:00:00 EST 2015}
}
Web of Science
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