TY - JOUR
T1 - YRuO3: A quantum weak ferromagnet
AU - Ji, Kunlang
AU - Paul, Arpita
AU - Solana-madruga, Elena
AU - Arevalo-lopez, Angel M.
AU - Waghmare, Umesh V.
AU - Attfield, J. Paul
PY - 2020/9/21
Y1 - 2020/9/21
N2 - The perovskite YRuO3 containing low-spin d5 Ru3+ has a Pnma orthorhombic structure with elongated RuO6octahedra evidencing orbital order and is insulating to low temperatures with a band gap of 70 meV. Canted antiferromagnetic Ru3+ spin order is observed below TC = 97 K, and magnetization plateaus that emerge below 62 K reveal a quantum weak ferromagnetic state where 1/8 of the spins are reversed, reflecting extreme singleion anisotropy resulting from the strong spin-orbit coupling of the d5 Ru3+ ion. Dynamic effects of the reversed spins give rise to an unusual negative AC susceptibility response, and a partial freezing of this motion occurs at27 K.
AB - The perovskite YRuO3 containing low-spin d5 Ru3+ has a Pnma orthorhombic structure with elongated RuO6octahedra evidencing orbital order and is insulating to low temperatures with a band gap of 70 meV. Canted antiferromagnetic Ru3+ spin order is observed below TC = 97 K, and magnetization plateaus that emerge below 62 K reveal a quantum weak ferromagnetic state where 1/8 of the spins are reversed, reflecting extreme singleion anisotropy resulting from the strong spin-orbit coupling of the d5 Ru3+ ion. Dynamic effects of the reversed spins give rise to an unusual negative AC susceptibility response, and a partial freezing of this motion occurs at27 K.
U2 - 10.1103/PhysRevMaterials.4.091402
DO - 10.1103/PhysRevMaterials.4.091402
M3 - Article
VL - 4
JO - Physical Review Materials
JF - Physical Review Materials
SN - 2475-9953
IS - 9
ER -