Tuning the magnetic ground state of Ce1−xYbxRhIn5 by Yb valence fluctuations

Authors

S. Jang, University of California, San Diego
N. Pouse, University of California, San Diego
T. Keiber, University of California, San Diego
Benjamin White, Central Washington UniversityFollow
S. M. Dissler, NIST Center for Neutron Research
J. W. Lynn, NIST Center for Neuron Research
J. C. Collini, Rochester Institute of Technology
M. Janoschek, University of California, San Diego
F. Bridges, University of California, Santa Cruz
M. Brian Maple, University of California, San DiegoFollow

Document Type

Article

Department or Administrative Unit

Physics

Publication Date

11-16-2018

Abstract

We characterize the properties of Ce_1−xYb_xRhIn₅ single crystals with 0 ⩽ x ⩽ 1 using measurements of powder x-ray diffraction, energy dispersive x-ray spectroscopy, electrical resistivity, magnetic susceptibility, specific heat, x-ray absorption near edge structure (XANES), and neutron diffraction. The Yb valence v_Yb, calculated from the magnetic susceptibility and measured using XANES, decreases from 3+ at x = 0 to ∼2.1+ at x_act = 0.2, where x_act is the measured Yb concentration. A transition from incommensurate to commensurate antiferromagnetism is observed in neutron diffraction measurements along Q = (0.5, 0.5, l) between 0.2 ⩽ x_act ⩽ 0.27; this narrative is supported by specific-heat measurements in which a second robust feature appears at a temperature T_I (T_I < T_N) for the same concentration range. Magnetic susceptibility measurements also reveal features which provide additional evidence of magnetic ordering. The results of this study suggest that the evolution of the Yb valence plays a critical role in tuning the magnetic ground state of Ce_1−xYb_xRhIn₅.

Comments

This article was originally published in Physical Review B. The full-text article from the publisher can be found here.

Recommended Citation

Jang, S.; Pouse, N.; Keiber, T.; White, Benjamin; Dissler, S. M.; Lynn, J. W.; Collini, J. C.; Janoschek, M.; Bridges, F.; and Maple, M. Brian, "Tuning the magnetic ground state of Ce1−xYbxRhIn5 by Yb valence fluctuations" (2018). All Faculty Scholarship for the College of the Sciences. 85.
https://digitalcommons.cwu.edu/cotsfac/85

Journal

Physical Review B

Rights

© 2018 American Physical Society