TY - JOUR
T1 - 1/8 anomaly in the excess-oxygen-doped La1.8Nd0.2Cu1−yZnyO4+δ
AU - Mikuni, H.
AU - Adachi, T.
AU - Yairi, S.
AU - Kato, M.
AU - Koike, Y.
AU - Watanabe, I.
AU - Nagamine, K.
PY - 2003
Y1 - 2003
N2 - We have found the 1/8 anomaly, namely, the anomalous suppression of superconductivity at p (the hole concentration per Cu) =1/8 in the excess-oxygen-doped La1.8Nd0.2Cu1−yZnyO4+δ, where the excess oxygen is doped by the electrochemical technique and the phase separation of the excess oxygen is suppressed. The 1/8 anomaly has become marked by the 1% substitution of Zn for Cu. The muon-spin-relaxation measurements have revealed that the magnetic correlation develops at low temperatures below about 50 K in both Zn-free and 1% Zn-substituted samples with p=1/8. Clear precession of muon spins suggesting the formation of a long-range magnetic order has been observed below 1 K in the 1% Zn-substituted sample with p=1/8. These results are consistent with the stripe-pinning model.
AB - We have found the 1/8 anomaly, namely, the anomalous suppression of superconductivity at p (the hole concentration per Cu) =1/8 in the excess-oxygen-doped La1.8Nd0.2Cu1−yZnyO4+δ, where the excess oxygen is doped by the electrochemical technique and the phase separation of the excess oxygen is suppressed. The 1/8 anomaly has become marked by the 1% substitution of Zn for Cu. The muon-spin-relaxation measurements have revealed that the magnetic correlation develops at low temperatures below about 50 K in both Zn-free and 1% Zn-substituted samples with p=1/8. Clear precession of muon spins suggesting the formation of a long-range magnetic order has been observed below 1 K in the 1% Zn-substituted sample with p=1/8. These results are consistent with the stripe-pinning model.
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U2 - 10.1103/PhysRevB.68.024524
DO - 10.1103/PhysRevB.68.024524
M3 - Article
AN - SCOPUS:85039026513
VL - 68
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 2
ER -