TY - JOUR
T1 - Raman scattering of the charge-spin stripes in La1.67Sr0.33NiO4
AU - Yamamoto, K.
AU - Katsufuji, T.
AU - Tanabe, T.
AU - Tokura, Y.
PY - 1998/2/16
Y1 - 1998/2/16
N2 - Raman scattering spectra have been investigated for a single crystal of La1.67Sr0.33NiO4 which shows stripe ordering of charge (Tc = 230 K) and spin (Ts = 180 K. Upon the charge ordering, the activated phonon peaks grow with the evolution of the charge modulation amplitude, while the electronic Raman continuum of the metallic state abruptly disappears. The two broad peaks with the B1g symmetry arising from the two-magnon excitations emerge immediately below Tc, indicating the evolution of the two-dimensional antiferromagnetic spin correlation in the charge-ordered state even above Ts.
AB - Raman scattering spectra have been investigated for a single crystal of La1.67Sr0.33NiO4 which shows stripe ordering of charge (Tc = 230 K) and spin (Ts = 180 K. Upon the charge ordering, the activated phonon peaks grow with the evolution of the charge modulation amplitude, while the electronic Raman continuum of the metallic state abruptly disappears. The two broad peaks with the B1g symmetry arising from the two-magnon excitations emerge immediately below Tc, indicating the evolution of the two-dimensional antiferromagnetic spin correlation in the charge-ordered state even above Ts.
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U2 - 10.1103/PhysRevLett.80.1493
DO - 10.1103/PhysRevLett.80.1493
M3 - Article
AN - SCOPUS:0001668780
SN - 0031-9007
VL - 80
SP - 1493
EP - 1496
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
ER -