Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session B38: 2D Magnetism I
11:15 AM–2:03 PM,
Monday, March 4, 2019
BCEC Room: 206B
Sponsoring Units: GMAG DMP
Chair: Mark Meisel, University of Florida
Abstract: B38.00001 : Criticality in Two-Dimensional Quantum Antiferromagnets (2D QAF)
11:15 AM–11:51 AM
In practice, all known crystalline realizations of 2D QHAF magnetically order at low temperatures due to a combination of interlayer exchange (J3d) and/or exchange anisotropy (Δ). Simulations of the ideal (J3d=0) 2D QHAF  revealed that a ratio Δ/J < 0.01 will induce either XY or I-order at low temperatures and also revealed that the ideal 2D QHAF becomes a perfect 2D QXYAF in an applied field . This talk will describe the approaches followed in the Clark University group in pursuit of the ideal 2D QHAF, as illustrated in the compound [Cu(pz)2(2-HO-py)2](PF6)2.
 Cuccoli, A. et al, Phys. Rev. B, 67, 104414 (2003).
 Cuccoli, A. et al, Phys. Rev. B, 68, 060402(R) (2003)
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