2017/05/19 by M. Zhu, Y. Wang, P. G. Li +9
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Atomic orbital #Atomic physics #Chemistry #Condensed matter physics #Crystallography #Dopant #Doping #Electron #Ground state #Magnetic and transport properties of perovskites and related materials #Paramagnetism #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.95.174430
published as Phys. Rev. B 95, 174430 (2017) · 19 pages, 4 figures
openalex publication_date 2017/05/19 · openalex created_date 2017/05/26 · arxiv created 2018/02/10 · arxiv updated 2018/02/21 · openalex updated_date 2026/08/06
We report the magnetic and electronic properties of the bilayer ruthenate Sr3Ru2O7 upon Fe substitution for Ru. We find that Sr3(Ru_1\ensuremath-xFex)2O7 shows a spin-glass-like phase below 4 K for x=0.01 and commensurate E-type antiferromagnetically ordered insulating ground state characterized by the propagation vector qc=(0.25\phantom\rule0.16em0ex0.25\phantom\rule0.16em0ex0) for x\ensuremath≥0.03, respectively, in contrast to the paramagnetic metallic state in the parent compound with strong spin fluctuations occurring at wave vectors q=(0.09\phantom\rule0.16em0ex0\phantom\rule0.16em0ex0) and (0.25 0 0). The observed antiferromagnetic ordering is quasi-two-dimensional with very short correlation length along the c axis, a feature similar to the Mn-doped Sr3Ru2O7. Our results suggest that this ordered ground state is associated with the intrinsic magnetic instability in the pristine compound, which can be readily tipped by the local magnetic coupling between the 3d orbitals of the magnetic dopants and Ru 4d orbitals.