Surface and Bulk Structural Properties of Single Crystalline Sr3Ru2O7

Abstract

We report temperature and thermal-cycling dependence of surface and bulk structures of double-layered perovskite Sr3Ru2O7 single crystals. The surface and bulk structures were investigated using low-energy electron diffraction (LEED) and single-crystal X-ray diffraction (XRD) techniques, respectively. Single-crystal XRD data is in good agreement with previous reports for the bulk structure with RuO6 octahedral rotation, which increases with decreasing temperature (~ 6.7(6)degrees at 300 K and ~ 8.1(2) degrees at 90 K). LEED results reveal that the octahedra at the surface are much more distorted with a higher rotation angle (~ 12 degrees between 300 and 80 K) and a slight tilt ((4.5\pm2.5) degrees at 300 K and (2.5\pm1.7) degrees at 80 K). While XRD data confirms temperature dependence of the unit cell height/width ratio (i.e. lattice parameter c divided by the average of parameters a and b) found in a prior neutron powder diffraction investigation, both bulk and surface structures display little change with thermal cycles between 300 and 80 K.

25 pages, 5 figures, 5 tables, to appear in Physical Review B

References in corpus (6)

• Magnetic Phase Diagram of Ca2-xSrxRuO4 Governed by Structural Distortions
• Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7
• Local Tunneling Spectroscopy across a Metamagnetic Critical Point in the Bi-layer Ruthenate Sr3Ru2O7
• Manifestations of Broken Symmetry: The Surface Phases of Ca(2-x)Sr(x)RuO4
• Temperature dependent bilayer ferromagnetism in Sr3Ru2O7
• Ca3(Ru1-xCrx)2O7: A new paradigm for spin valves

Cited by in corpus (14)

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• Evolution of Structural and Physical Properties of Sr3(Ru1-xMnx)2O7 with Mn Concentration
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• Study of the electronic nematic phase of Sr${}_3$Ru${}_2$O${}_7$ with precise control of the applied magnetic field vector
• Electric field driven octahedral rotation in perovskite
• Point defects at cleaved Sr${}_{n+1}$Ru${}_n$O${}_{3n+1}$(001) surfaces
• Emergent charge order near the doping-induced Mott-insulating quantum phase transition in Sr${}_3$Ru${}_2$O${}_7$
• Competing magnetic orders in quantum critical Sr${}_3$Ru${}_2$O${}_7$
• Atomic-scale imaging of emergent order at a magnetic-field-induced Lifshitz transition
• A spatially resolved optical method to measure thermal diffusivity
• Hidden Phases Revealed at the Surface of Double-Layered Sr3(Ru1-xMnx)2O7
• Adsorption of CO on the Ca3Ru2O7(001) surface
• High-resolution surface structure determination from bulk X-ray diffraction data
• Anomalous Fermi pockets on Hund's metal surface of Sr2RuO4 induced by the correlation-enhanced spin-orbit coupling