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Title: Magnetic phase transitions and magnetoelastic coupling in S = 1 2 Heisenberg antiferromagnets

Journal Article · · Physical Review B

We combined magneto-infrared spectroscopy and first-principles calculations to unravel the role of spin-phonon coupling in the vicinity of the magnetic field-driven phase transitions in two chemically similar S = 1/2 Heisenberg antiferromagnets, CuF2(H2O)(2)(3-Clpy) and [Cu(pyz)(2)(HF2)]PF6. This comparison resolves questions about the conditions under which the lattice participates in magnetic-field-driven transitions and, at the same time, provides a way to predict how the lattice is likely to support microscopic spin rearrangements.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; National Science Foundation (NSF)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1374881
Journal Information:
Physical Review B, Vol. 95, Issue 10; ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

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