Fig. 4: Mapping out the T–H phase diagram of ErFeO3 in H∥z.
From: Quantum simulation of an extended Dicke model with a magnetic solid
a Phase boundaries determined by THz measurements (solid circles) and magnetization measurements (squares) overlaid on the dT/d(μ0H) color map determined from MCE measurements. Red (blue) dashed line denotes a first- (second-) order phase boundary. b–d THz absorption spectra mapped vs μ0H for select T values. e–g THz absorption spectra mapped vs T for select μ0H values. Red and blue dashed lines mark the same boundaries as those in (a). All features except for those labeled “qFM” are qAFM magnon modes of Fe3+ spins.
