TY - JOUR
T1 - Growth, annealing effects on superconducting and magnetic properties, and anisotropy of FeSe1-xTex (0.5 ≤ × ≤ 1) single crystals
AU - Noji, Takashi
AU - Suzuki, Takumi
AU - Abe, Haruki
AU - Adachi, Tadashi
AU - Kato, Masatsune
AU - Koike, Yoji
PY - 2010/8
Y1 - 2010/8
N2 - Single crystals of FeSe1-xTex (0.5 ≤ × ≤ 1) have been grown by the Bridgman method. After annealing them at 400 °C for 100h in vacuum, single crystals of × = 0.5-0.9 have exhibited bulk superconductivity. Anisotropic properties of the electrical resistivity and upper critical field, Hc2, have been investigated for the single-crystal FeSe1-xTex with × = 0.6. It has been found that the in-plane resistivity, ρab, shows a metallic temperature-dependence, while the out-of-plane resistivity, ρc, shows a broad maximum around 100 K. The resistivity ratio, ρc/ ρab, is 44 and 70 at 290 K and just above the superconducting transition temperature, Tc, respectively. The anisotropic parameter, γ = H∥c2/Hc2 (superscripts ∥ and indicate field directions parallel and perpendicular to the ab-plane, respectively.), is estimated as 2.7 just below Tc.
AB - Single crystals of FeSe1-xTex (0.5 ≤ × ≤ 1) have been grown by the Bridgman method. After annealing them at 400 °C for 100h in vacuum, single crystals of × = 0.5-0.9 have exhibited bulk superconductivity. Anisotropic properties of the electrical resistivity and upper critical field, Hc2, have been investigated for the single-crystal FeSe1-xTex with × = 0.6. It has been found that the in-plane resistivity, ρab, shows a metallic temperature-dependence, while the out-of-plane resistivity, ρc, shows a broad maximum around 100 K. The resistivity ratio, ρc/ ρab, is 44 and 70 at 290 K and just above the superconducting transition temperature, Tc, respectively. The anisotropic parameter, γ = H∥c2/Hc2 (superscripts ∥ and indicate field directions parallel and perpendicular to the ab-plane, respectively.), is estimated as 2.7 just below Tc.
KW - Anisotropy
KW - Annealing effect
KW - Electrical resistivity
KW - FeSeTe single crystal
KW - Upper critical field
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U2 - 10.1143/JPSJ.79.084711
DO - 10.1143/JPSJ.79.084711
M3 - Article
AN - SCOPUS:77956436319
VL - 79
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 8
M1 - 084711
ER -