TY - JOUR
T1 - Effect of structural symmetry on the magnetic and superconducting properties in La1.875Ba0.125-xSrxCuO4
AU - Goka, H.
AU - Fujita, M.
AU - Ikeda, Y.
AU - Yamada, K.
N1 - Funding Information:
This work was supported by a grant-in-aid for Scientific Research from Ministry of Education, Science, Culture and Sports of Japan and by the Core Research for Evolutional Science and Technology (CREST) Project sponsored by the Japan Science and Technology Corporation.
PY - 2001/8
Y1 - 2001/8
N2 - We investigate interplay among magnetism, superconductivity and crystal structure of 1/8-doped La1.875 Ba0.125-xSrxCuO4 using single crystals. A step-like change in the superconducting transition temperature Tc takes place at a specific Sr concentration around x = 0.08. In the lower concentration region (x ≤ 0.075), Tc, is remarkably suppressed to around 10 K and weakly depends on x. Furthermore, a structural phase transition from low temperature orthorhombic (LTO) to low temperature tetragonal or Pccn phase occurs. At the transition an anomalous upturn of magnetic susceptibility is observed upon cooling under a magnetic field perpendicular to CuO2 plane. On the other hand, in the LTO phase with higher Sr concentration (x ≥ 0.085), Tc is nearly constant around 30 K.
AB - We investigate interplay among magnetism, superconductivity and crystal structure of 1/8-doped La1.875 Ba0.125-xSrxCuO4 using single crystals. A step-like change in the superconducting transition temperature Tc takes place at a specific Sr concentration around x = 0.08. In the lower concentration region (x ≤ 0.075), Tc, is remarkably suppressed to around 10 K and weakly depends on x. Furthermore, a structural phase transition from low temperature orthorhombic (LTO) to low temperature tetragonal or Pccn phase occurs. At the transition an anomalous upturn of magnetic susceptibility is observed upon cooling under a magnetic field perpendicular to CuO2 plane. On the other hand, in the LTO phase with higher Sr concentration (x ≥ 0.085), Tc is nearly constant around 30 K.
KW - 1/8 problem
KW - LBSCO
KW - LTO-LTT/Pccn transition
KW - Magnetic susceptibility
KW - Single crystal
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U2 - 10.1016/S0921-4534(01)00223-4
DO - 10.1016/S0921-4534(01)00223-4
M3 - Article
AN - SCOPUS:0035422464
SN - 0921-4534
VL - 357-360
SP - 256
EP - 259
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SUPPL. 2
ER -