TY - JOUR
T1 - Inelastic neutron scattering study of the magnetic fluctuations in Sr 2RuO4
AU - Iida, K.
AU - Kofu, M.
AU - Katayama, N.
AU - Lee, J.
AU - Kajimoto, R.
AU - Inamura, Y.
AU - Nakamura, M.
AU - Arai, M.
AU - Yoshida, Y.
AU - Fujita, M.
AU - Yamada, K.
AU - Lee, S. H.
PY - 2011/8/8
Y1 - 2011/8/8
N2 - By performing time-of-flight neutron scattering measurements on a large sample of single crystals of Sr2RuO4, we studied the detailed structure of the imaginary part of the dynamic spin susceptibility over a wide range of phase space. In the normal state at T=5 K, strong incommensurate (IC) peaks were clearly observed around Qc=(0.3,0.3) up to at least ω=80 meV. In addition, our data also show strong magnetic fluctuations that exist on the ridges connecting the IC peaks around the (π,π) point rather than around the Γ point. Our results are consistent with the semi-mean-field random phase approximation calculation for a two-dimensional Fermi liquid with a characteristic energy of 5.0 meV. Furthermore, the IC fluctuations were observed even at room temperature.
AB - By performing time-of-flight neutron scattering measurements on a large sample of single crystals of Sr2RuO4, we studied the detailed structure of the imaginary part of the dynamic spin susceptibility over a wide range of phase space. In the normal state at T=5 K, strong incommensurate (IC) peaks were clearly observed around Qc=(0.3,0.3) up to at least ω=80 meV. In addition, our data also show strong magnetic fluctuations that exist on the ridges connecting the IC peaks around the (π,π) point rather than around the Γ point. Our results are consistent with the semi-mean-field random phase approximation calculation for a two-dimensional Fermi liquid with a characteristic energy of 5.0 meV. Furthermore, the IC fluctuations were observed even at room temperature.
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U2 - 10.1103/PhysRevB.84.060402
DO - 10.1103/PhysRevB.84.060402
M3 - Article
AN - SCOPUS:80052379121
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 6
M1 - 060402
ER -