Absence of nematic ordering transition in a diamond lattice: Application to
- Univ. of Illinois, Urbana, IL (United States)
Recent neutron scattering observations by [Plumb et al., Phys. Rev. X 6, 041055 (2016)] reveal that the ground state of is magnetic with two distinct Fe environments, instead of a quantum spin liquid as had been previously thought. Starting with the relevant O(N)-symmetric vector model of , we study how the discrete (Z2) and continuous rotational symmetries are successively broken, yielding nematic and ordered phases. At high temperatures, we find that the nematic order parameter falls as T–γ (γ > 0), and therefore, lacks any distinct nematic ordering temperature. Furthermore, this feature indicates that the three-dimensional diamond lattice of is highly susceptible to the breaking of Ising symmetries, and explains the two distinct Fe environments that are present even at high temperatures, as seen by Mössbauer and far-infrared optical spectroscopy.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-98CH10886; DMR-1461952; AC02-98CH1088
- OSTI ID:
- 1388510
- Alternate ID(s):
- OSTI ID: 1338099
- Journal Information:
- Physical Review B, Vol. 95, Issue 2; Related Information: CES partners with Brookhaven National Laboratory (BNL); Argonne National Laboratory; University of Illinois, Urbana-Champaign; Los Alamos National Laboratory; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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