Mn-induced magnetic symmetry breaking and its correlation with the metal-insulator transition in bilayered Sr3(Ru1-xMnx)2O7

Abstract

Bilayered Sr3Ru2O7 is an unusual metamagnetic metal with inherently antiferromagnetic (AFM) and ferromagnetic (FM) fluctuations. Partial substitution of Ru by Mn results in the establishment of metal-insulator transition (MIT) at TMIT and AFM ordering at TM in Sr3(Ru1-xMnx)2O7. Using elastic neutron scattering we determined the effect of Mn doping on the magnetic structure and in-plane magnetic correlation lengths in Sr3(Ru1-xMnx)2O7 (x = 0.06 and 0.12). With increasing Mn doping (x) from 0.06 to 0.12 or decreasing temperatures for x=0.12, an evolution from an in-plane short-range to long-range double-stripe AFM ground state occurs. For both compounds, the onset of magnetic correlation with an anisotropic behavior coincides with the sharp rise of the electrical resistivity and the specific heat. Since it does not induce measurable lattice distortion, the double-stripe magnetic order with anisotropic spin texture breaks the symmetry from C4v crystal lattice to C2v magnetic sublattice. These observations shed new light on an age-old question of Slater versus Mott-type MIT.

arXiv comment17 pages, 4 figures, accepted in Physical Review B (rapid communication)

References in corpus (19)

• Nematic order in iron superconductors - who is in the driver's seat?
• Formation of a Nematic Fluid at High Fields in Sr3Ru2O7
• Bi-collinear antiferromagnetic order in the tetragonal $\alpha$-FeTe
• Metamagnetism and critical fluctuations in high quality single crystals of the bilayer ruthenate Sr3Ru2O7
• The ground state of Sr3Ru2O7 revisited; Fermi liquid close to a ferromagnetic instability
• Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
• Fermi surface and van Hove singularities in the itinerant metamagnet Sr3Ru2O7
• Field tunable spin density wave phases in Sr3Ru2O7
• Sr3Ru2O7: Thermodynamics of Phase Formation in a Quantum Critical Metal
• Unconventional metamagnetic electron states in orbital band systems
• Orbital Nematic Instability in Two-Orbital Hubbard Model: Renormalization-Group + Constrained RPA Analysis
• Quantum criticality and the formation of a putative electronic liquid crystal in Sr3Ru2O7
• Impurity-induced transition to a Mott insulator in Sr${}_3$Ru${}_2$O${}_7$
• Symmetry-breaking lattice distortion in Sr_3Ru_2O_7
• Electrical Transport Properties of Single Crystal Sr3Ru2O7: The Possible Existence of an Antiferromagnetic Instability at Low Temperatures
• Evolution of Structural and Physical Properties of Sr3(Ru1-xMnx)2O7 with Mn Concentration
• Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(Fe${}_{0.953}$Co${}_{0.047}$)${}_2$As${}_2$: Evidence for a sharp enhancement of spin fluctuations by nematic order
• Mott versus Slater-type metal-insulator transition in Mn-substituted Sr3Ru2O7
• Electronic superlattice revealed by resonant scattering from random impurities in Sr3Ru2O7

Cited by in corpus (1)

• Structure-Property Relationship in Layered BaMn2Sb2 and Ba2Mn3Sb2O2