Journal
PHYSICAL REVIEW B
Volume 89, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.064401
Keywords
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Funding
- State of Florida
- NSERC of Canada
- CFI
- ACS Petroleum Fund
- CRC program
- EPSRC
- Royal Society
- National Science Foundation of China (NSFC) [11304371]
- Chinese Academy of Sciences [Y2K5016X51]
- JDRD program of the University of Tennessee
- [NSF-DMR-0654118]
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The linear and nonlinear ac susceptibility measurements of Yb-pyrochlores, Yb2X2O7 (X = Sn, Ti, and Ge), show transitions with a ferromagnetic nature at 0.13 and 0.25 K for Yb2Sn2O7 and Yb2Ti2O7, respectively, and an antiferromagnetic ordering at 0.62 K for Yb2Ge2O7. These systematical results (i) provided information about the nature of the unconventional magnetic ground state in Yb2Ti2O7; (ii) realized a distinct antiferromagnetic ordering state in Yb2Ge2O7; and (iii) demonstrated that the application of chemical pressure through the series of Yb-pyrochlores can efficiently perturb the fragile quantum spin fluctuations of the Yb3+ ions and lead to very different magnetic ground states.
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