Observation of two-dimensional spin fluctuations in the bilayer ruthenate Sr₃Ru₂O₇ by inelastic neutron scattering

L Capogna; Edward Forgan; SM Hayden; A Wildes; JA Duffy; AP Mackenzie; RS Perry; S Ikeda; Y Maeno; Stephen Brown

doi:10.1103/PhysRevB.67.012504

Observation of two-dimensional spin fluctuations in the bilayer ruthenate Sr₃Ru₂O₇ by inelastic neutron scattering

L Capogna, Edward Forgan, SM Hayden, A Wildes, JA Duffy, AP Mackenzie, RS Perry, S Ikeda, Y Maeno, Stephen Brown

Physics and Astronomy

Research output: Contribution to journal › Article

Abstract

We report an observation of two-dimensional incommensurate magnetic fluctuations in the layered metallic perovskite Sr3Ru2O7. The wave vectors where the magnetic fluctuations are strongest are different from those observed in the superconducting single layer ruthenate Sr2RuO4 and appear to be determined by Fermi surface nesting. No antiferromagnetic ordering is observed for temperatures down to 1.5 K. For temperatures Tgreater than or similar to20 K, the fluctuations become predominately ferromagnetic. Our inelastic neutron scattering measurements provide concrete evidence of the coexistence of competing interactions in Sr3Ru2O7 and of the low-energy scale of the fluctuations.

Original language	English
Pages (from-to)	012504
Number of pages	1
Journal	Physical Review B
Volume	67
Issue number	1
Early online date	1 Jan 2003
DOIs	https://doi.org/10.1103/PhysRevB.67.012504
Publication status	Published - 1 Jan 2003

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http://link.aps.org/abstract/PRB/v67/e012504

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title = "Observation of two-dimensional spin fluctuations in the bilayer ruthenate Sr₃Ru₂O₇ by inelastic neutron scattering",

abstract = "We report an observation of two-dimensional incommensurate magnetic fluctuations in the layered metallic perovskite Sr3Ru2O7. The wave vectors where the magnetic fluctuations are strongest are different from those observed in the superconducting single layer ruthenate Sr2RuO4 and appear to be determined by Fermi surface nesting. No antiferromagnetic ordering is observed for temperatures down to 1.5 K. For temperatures Tgreater than or similar to20 K, the fluctuations become predominately ferromagnetic. Our inelastic neutron scattering measurements provide concrete evidence of the coexistence of competing interactions in Sr3Ru2O7 and of the low-energy scale of the fluctuations.",

author = "L Capogna and Edward Forgan and SM Hayden and A Wildes and JA Duffy and AP Mackenzie and RS Perry and S Ikeda and Y Maeno and Stephen Brown",

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T1 - Observation of two-dimensional spin fluctuations in the bilayer ruthenate Sr₃Ru₂O₇ by inelastic neutron scattering

AU - Capogna, L

AU - Forgan, Edward

AU - Hayden, SM

AU - Wildes, A

AU - Duffy, JA

AU - Mackenzie, AP

AU - Perry, RS

AU - Ikeda, S

AU - Maeno, Y

AU - Brown, Stephen

PY - 2003/1/1

Y1 - 2003/1/1

N2 - We report an observation of two-dimensional incommensurate magnetic fluctuations in the layered metallic perovskite Sr3Ru2O7. The wave vectors where the magnetic fluctuations are strongest are different from those observed in the superconducting single layer ruthenate Sr2RuO4 and appear to be determined by Fermi surface nesting. No antiferromagnetic ordering is observed for temperatures down to 1.5 K. For temperatures Tgreater than or similar to20 K, the fluctuations become predominately ferromagnetic. Our inelastic neutron scattering measurements provide concrete evidence of the coexistence of competing interactions in Sr3Ru2O7 and of the low-energy scale of the fluctuations.

AB - We report an observation of two-dimensional incommensurate magnetic fluctuations in the layered metallic perovskite Sr3Ru2O7. The wave vectors where the magnetic fluctuations are strongest are different from those observed in the superconducting single layer ruthenate Sr2RuO4 and appear to be determined by Fermi surface nesting. No antiferromagnetic ordering is observed for temperatures down to 1.5 K. For temperatures Tgreater than or similar to20 K, the fluctuations become predominately ferromagnetic. Our inelastic neutron scattering measurements provide concrete evidence of the coexistence of competing interactions in Sr3Ru2O7 and of the low-energy scale of the fluctuations.

U2 - 10.1103/PhysRevB.67.012504

DO - 10.1103/PhysRevB.67.012504

M3 - Article

SN - 1098-0121

VL - 67

SP - 012504

JO - Physical Review B

JF - Physical Review B

IS - 1

ER -

Observation of two-dimensional spin fluctuations in the bilayer ruthenate Sr₃Ru₂O₇ by inelastic neutron scattering

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