Chemical pressure effects on magnetism in the quantum spin liquid candidates Yb${}_{2}{X}_{2}$O${}_{7}$ ($X=\text{Sn}$, Ti, Ge)

Chemical pressure effects on magnetism in the quantum spin liquid candidates Yb $_{2} X_{2}$ O $_{7}$ ( $X = Sn$ , Ti, Ge)

Z. L. Dun, M. Lee, E. S. Choi, A. M. Hallas, C. R. Wiebe, J. S. Gardner, E. Arrighi, R. S. Freitas, A. M. Arevalo-Lopez, J. P. Attfield, H. D. Zhou, and J. G. Cheng

Phys. Rev. B 89, 064401 – Published 4 February 2014

Abstract

The linear and nonlinear ac susceptibility measurements of Yb-pyrochlores, Yb $_{2} X_{2}$ O $_{7}$ ( $X = Sn$ , Ti, and Ge), show transitions with a ferromagnetic nature at 0.13 and 0.25 K for Yb $_{2}$ Sn $_{2}$ O $_{7}$ and Yb $_{2}$ Ti $_{2}$ O $_{7}$ , respectively, and an antiferromagnetic ordering at 0.62 K for Yb $_{2}$ Ge $_{2}$ O $_{7}$ . These systematical results (i) provided information about the nature of the unconventional magnetic ground state in Yb $_{2}$ Ti $_{2}$ O $_{7}$ ; (ii) realized a distinct antiferromagnetic ordering state in Yb $_{2}$ Ge $_{2}$ O $_{7}$ ; 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 Yb $^{3 +}$ ions and lead to very different magnetic ground states.

Received 10 September 2013
Revised 15 January 2014

DOI:https://doi.org/10.1103/PhysRevB.89.064401

Authors & Affiliations

Z. L. Dun¹, M. Lee^2,3, E. S. Choi², A. M. Hallas⁴, C. R. Wiebe^2,4,5, J. S. Gardner⁶, E. Arrighi⁷, R. S. Freitas⁷, A. M. Arevalo-Lopez⁸, J. P. Attfield⁸, H. D. Zhou^1,2,*, and J. G. Cheng^9,†

¹Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, USA
²National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306-4005, USA
³Department of Physics, Florida State University, Tallahassee, Florida 32306-3016, USA
⁴Department of Chemistry, University of Manitoba, Winnipeg, MB, R3T 2N2 Canada
⁵Department of Chemistry, University of Winnipeg, Winnipeg, MB, R3B 2E9 Canada
⁶Neutron Group, National Synchrotron Radiation Research Center, Hsinchu, 30076 Taiwan, Republic of China
⁷Instituto de Fisica, Universidade de Sao Paulo, CP 66318, 05314-970 Sao Paulo, SP, Brazil
⁸Centre for Science at Extreme Conditions and the School of Chemistry, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
⁹Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

^*hzhou10@utk.edu
^†jgcheng@iphy.ac.cn

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Vol. 89, Iss. 6 — 1 February 2014

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Physical Review B

covering condensed matter and materials physics

Chemical pressure effects on magnetism in the quantum spin liquid candidates Yb $_{2} X_{2}$ O $_{7}$ ( $X = Sn$ , Ti, Ge)

Z. L. Dun, M. Lee, E. S. Choi, A. M. Hallas, C. R. Wiebe, J. S. Gardner, E. Arrighi, R. S. Freitas, A. M. Arevalo-Lopez, J. P. Attfield, H. D. Zhou, and J. G. Cheng

Phys. Rev. B 89, 064401 – Published 4 February 2014

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Physical Review B

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Chemical pressure effects on magnetism in the quantum spin liquid candidates Yb2X2O7 (X=Sn, Ti, Ge)

Z. L. Dun, M. Lee, E. S. Choi, A. M. Hallas, C. R. Wiebe, J. S. Gardner, E. Arrighi, R. S. Freitas, A. M. Arevalo-Lopez, J. P. Attfield, H. D. Zhou, and J. G. Cheng

Phys. Rev. B 89, 064401 – Published 4 February 2014

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Chemical pressure effects on magnetism in the quantum spin liquid candidates Yb $_{2} X_{2}$ O $_{7}$ ( $X = Sn$ , Ti, Ge)