Abstract
With the aim at investigating the relationship between the anomalous decrease in Tc, the development of the Cu-spin correlation and the inhomogeneity of superconductivity at x ∼ 0.21 in the overdoped regime of La2-xSrxCuO4, we have performed the in-plane electrical-resistivity, ρab and magnetization measurements. Measurements of the temperature dependence of ρab in magnetic fields have revealed that the superconducting (SC) transition curve shifts to the low-temperature side almost in parallel with increasing field above ∼ 9 T at x ∼ 0.21, which is similar to that observed for stripe-ordered La-214 systems with the hole concentration of ∼ 1/8 per Cu. On the other hand, it has been found that the magnetization curve shows the so-called second peak in the SC state at x ∼ 0.21, which is due to the strong vortex pinning in normal-state regions in the nano-scale inhomogeneous SC state. Accordingly, it is likely that the stripe correlations are developed in the nano-scale inhomogeneous SC state at x ∼ 0.21.
| Original language | English |
|---|---|
| Article number | 022074 |
| Journal | Journal of Physics: Conference Series |
| Volume | 400 |
| Issue number | PART 2 |
| DOIs | |
| Publication status | Published - 2012 |
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Inhomogeneity of superconductivity and stripe correlations at x ∼ 0.21 in La2-xSrxCuO4 . / Miyazaki, M.; Adachi, T.; Tanabe, Y.; Sato, H.; Nishizaki, T.; Kudo, Kazutaka; Sasaki, T.; Kobayashi, N.; Koike, Y.
In: Journal of Physics: Conference Series, Vol. 400, No. PART 2, 022074, 2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Inhomogeneity of superconductivity and stripe correlations at x ∼ 0.21 in La2-xSrxCuO4
AU - Miyazaki, M.
AU - Adachi, T.
AU - Tanabe, Y.
AU - Sato, H.
AU - Nishizaki, T.
AU - Kudo, Kazutaka
AU - Sasaki, T.
AU - Kobayashi, N.
AU - Koike, Y.
PY - 2012
Y1 - 2012
N2 - With the aim at investigating the relationship between the anomalous decrease in Tc, the development of the Cu-spin correlation and the inhomogeneity of superconductivity at x ∼ 0.21 in the overdoped regime of La2-xSrxCuO4, we have performed the in-plane electrical-resistivity, ρab and magnetization measurements. Measurements of the temperature dependence of ρab in magnetic fields have revealed that the superconducting (SC) transition curve shifts to the low-temperature side almost in parallel with increasing field above ∼ 9 T at x ∼ 0.21, which is similar to that observed for stripe-ordered La-214 systems with the hole concentration of ∼ 1/8 per Cu. On the other hand, it has been found that the magnetization curve shows the so-called second peak in the SC state at x ∼ 0.21, which is due to the strong vortex pinning in normal-state regions in the nano-scale inhomogeneous SC state. Accordingly, it is likely that the stripe correlations are developed in the nano-scale inhomogeneous SC state at x ∼ 0.21.
AB - With the aim at investigating the relationship between the anomalous decrease in Tc, the development of the Cu-spin correlation and the inhomogeneity of superconductivity at x ∼ 0.21 in the overdoped regime of La2-xSrxCuO4, we have performed the in-plane electrical-resistivity, ρab and magnetization measurements. Measurements of the temperature dependence of ρab in magnetic fields have revealed that the superconducting (SC) transition curve shifts to the low-temperature side almost in parallel with increasing field above ∼ 9 T at x ∼ 0.21, which is similar to that observed for stripe-ordered La-214 systems with the hole concentration of ∼ 1/8 per Cu. On the other hand, it has been found that the magnetization curve shows the so-called second peak in the SC state at x ∼ 0.21, which is due to the strong vortex pinning in normal-state regions in the nano-scale inhomogeneous SC state. Accordingly, it is likely that the stripe correlations are developed in the nano-scale inhomogeneous SC state at x ∼ 0.21.
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U2 - 10.1088/1742-6596/400/2/022074
DO - 10.1088/1742-6596/400/2/022074
M3 - Article
VL - 400
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - PART 2
M1 - 022074
ER -