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Title: Temperature Dependent Bilayer Ferromagnetism in Sr 3Ru 2O 7

Abstract

The ruthenium-based perovskites exhibit a wide variety of interesting collective phenomena related to magnetism originating from the Ru 4d electrons. Much remains unknown concerning the nature of magnetic fluctuations and excitations in these systems. We present results of detailed inelastic neutron scattering measurements of Sr{sub 3}Ru{sub 2}O{sub 7} as a function of temperature, probing the ferromagnetic fluctuations of the bilayer structure. A magnetic response is clearly visible for a range of temperatures, T=3.8 K up to T=100 K, and for energy transfers between {h_bar}{omega}=2 and 14 meV. These measurements indicate that the ferromagnetic fluctuations manifest in the bilayer structure factor persist to surprisingly large temperatures. This behavior may be related to the proximity of the system in zero magnetic field to the metamagnetic/ferromagnetic transition.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. ORNL
  2. National Institute of Standards and Technology (NIST)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Flux Isotope Reactor
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1003325
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 73; Journal Issue: 17
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRONS; ENERGY TRANSFER; FERROMAGNETISM; FLUCTUATIONS; MAGNETIC FIELDS; MAGNETISM; NEUTRON DIFFRACTION; PEROVSKITES; INELASTIC SCATTERING; STRUCTURE FACTORS

Citation Formats

Stone, Matthew B, Lumsden, Mark D, Jin, Rongying, Sales, Brian C, Mandrus, David, Nagler, Stephen E, and Qiu, Y. Temperature Dependent Bilayer Ferromagnetism in Sr3Ru2O7. United States: N. p., 2006. Web. doi:10.1103/PhysRevB.73.174426.
Stone, Matthew B, Lumsden, Mark D, Jin, Rongying, Sales, Brian C, Mandrus, David, Nagler, Stephen E, & Qiu, Y. Temperature Dependent Bilayer Ferromagnetism in Sr3Ru2O7. United States. doi:10.1103/PhysRevB.73.174426.
Stone, Matthew B, Lumsden, Mark D, Jin, Rongying, Sales, Brian C, Mandrus, David, Nagler, Stephen E, and Qiu, Y. Sun . "Temperature Dependent Bilayer Ferromagnetism in Sr3Ru2O7". United States. doi:10.1103/PhysRevB.73.174426.
@article{osti_1003325,
title = {Temperature Dependent Bilayer Ferromagnetism in Sr3Ru2O7},
author = {Stone, Matthew B and Lumsden, Mark D and Jin, Rongying and Sales, Brian C and Mandrus, David and Nagler, Stephen E and Qiu, Y.},
abstractNote = {The ruthenium-based perovskites exhibit a wide variety of interesting collective phenomena related to magnetism originating from the Ru 4d electrons. Much remains unknown concerning the nature of magnetic fluctuations and excitations in these systems. We present results of detailed inelastic neutron scattering measurements of Sr{sub 3}Ru{sub 2}O{sub 7} as a function of temperature, probing the ferromagnetic fluctuations of the bilayer structure. A magnetic response is clearly visible for a range of temperatures, T=3.8 K up to T=100 K, and for energy transfers between {h_bar}{omega}=2 and 14 meV. These measurements indicate that the ferromagnetic fluctuations manifest in the bilayer structure factor persist to surprisingly large temperatures. This behavior may be related to the proximity of the system in zero magnetic field to the metamagnetic/ferromagnetic transition.},
doi = {10.1103/PhysRevB.73.174426},
journal = {Physical Review B},
number = 17,
volume = 73,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}