Pressure-induced structural transition in copper pyrazine dinitrate and implications for quantum magnetism

Source Publication (e.g., journal title)

Physical Review B

Authors

Kenneth Robert O'NealFollow
J Zhou, Virginia Commonwealth University
J G. Cherian, University of Tennessee, Knoxville
M M. Turnbull, Clark University
C P. Landee, Clark University
Puru Jena, Virginia Commonwealth University, Richmond, VA
Zhenxian Liu, Carnegie Institution of Washington, Washington D.C.
Janice L. Musfeldt, University of Tennessee, Knoxville

Document Type

Article

Publication Date

3-10-2016

DOI

10.1103/PhysRevB.93.104409

Abstract

We combined synchrotron-based infrared and Raman spectroscopies, diamond anvil cell techniques, and first principles calculations to unveil pressure-induced distortions in quasi-one-dimensional Cu(pyz)(NO3)2. The crossover at 0.7 GPa is local in nature whereas the transition at 5 GPa lowers symmetry fromPmna to P2221 and is predicted to slightly increase magnetic dimensionality. Comparison with prior magnetoinfrared results reveals the striking role of out-of-plane bending of the pyrazine ligand, a finding that we discuss in terms of the possibility of using pressure to bias the magnetic quantum critical transition in this classic S = 1/2 antiferromagnet.

Recommended Citation

O'Neal, Kenneth Robert; Zhou, J; Cherian, J G.; Turnbull, M M.; Landee, C P.; Jena, Puru; Liu, Zhenxian; and Musfeldt, Janice L., "Pressure-induced structural transition in copper pyrazine dinitrate and implications for quantum magnetism" (2016). Chemistry Publications and Other Works.
https://trace.tennessee.edu/utk_chempubs/56

Submission Type

Post-print