Abstract
High-energy spin excitations up to above 8000 cm-1 were measured by polarized Raman scattering in the insulating phases of S=1/2 copper oxides, La2CuO4, YBa2Cu3O6.2, Bi2Sr2Ca0.5Y0.5Cu2O8+y, Nd2CuO4, and Pr2CuO4, and an S=1 nickel oxide La2NiO4. All the copper oxides commonly show anomalous spectra, especially the secondary scattering peaks near 4J (J is the two-spin superexchange energy). Those anomalies are caused by the large four-spin cyclic exchange interactions. The present experiments demonstrated that the four-spin exchanges show distinctive characteristics in cuprates as compared to other materials.
| Original language | English |
|---|---|
| Pages (from-to) | 1045-1047 |
| Number of pages | 3 |
| Journal | Physical Review B |
| Volume | 42 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1990 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
High-energy spin excitations in the insulating phases of high-Tc superconducting cuprates and La2NiO4. / Sugai, S.; Sato, M.; Kobayashi, T.; Akimitsu, Jun; Ito, T.; Takagi, H.; Uchida, S.; Hosoya, S.; Kajitani, T.; Fukuda, T.
In: Physical Review B, Vol. 42, No. 1, 1990, p. 1045-1047.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-energy spin excitations in the insulating phases of high-Tc superconducting cuprates and La2NiO4
AU - Sugai, S.
AU - Sato, M.
AU - Kobayashi, T.
AU - Akimitsu, Jun
AU - Ito, T.
AU - Takagi, H.
AU - Uchida, S.
AU - Hosoya, S.
AU - Kajitani, T.
AU - Fukuda, T.
PY - 1990
Y1 - 1990
N2 - High-energy spin excitations up to above 8000 cm-1 were measured by polarized Raman scattering in the insulating phases of S=1/2 copper oxides, La2CuO4, YBa2Cu3O6.2, Bi2Sr2Ca0.5Y0.5Cu2O8+y, Nd2CuO4, and Pr2CuO4, and an S=1 nickel oxide La2NiO4. All the copper oxides commonly show anomalous spectra, especially the secondary scattering peaks near 4J (J is the two-spin superexchange energy). Those anomalies are caused by the large four-spin cyclic exchange interactions. The present experiments demonstrated that the four-spin exchanges show distinctive characteristics in cuprates as compared to other materials.
AB - High-energy spin excitations up to above 8000 cm-1 were measured by polarized Raman scattering in the insulating phases of S=1/2 copper oxides, La2CuO4, YBa2Cu3O6.2, Bi2Sr2Ca0.5Y0.5Cu2O8+y, Nd2CuO4, and Pr2CuO4, and an S=1 nickel oxide La2NiO4. All the copper oxides commonly show anomalous spectra, especially the secondary scattering peaks near 4J (J is the two-spin superexchange energy). Those anomalies are caused by the large four-spin cyclic exchange interactions. The present experiments demonstrated that the four-spin exchanges show distinctive characteristics in cuprates as compared to other materials.
UR - http://www.scopus.com/inward/record.url?scp=0000033843&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000033843&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.42.1045
DO - 10.1103/PhysRevB.42.1045
M3 - Article
AN - SCOPUS:0000033843
VL - 42
SP - 1045
EP - 1047
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 1
ER -