Anisotropic properties of the layered superconductor Cu0.07 Ti Se2

E. Morosan; Lu Li; N. P. Ong; R. J. Cava

doi:10.1103/PhysRevB.75.104505

Anisotropic properties of the layered superconductor Cu0.07 Ti Se2

E. Morosan, Lu Li, N. P. Ong, R. J. Cava

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Abstract

The anisotropic superconducting properties of single crystals of Cu0.07 Ti Se2 were studied by measurements of magnetization and electrical resistivity. Tc is around 3.9 K, and the measured upper critical field (Hc2) values are ∼1.25 and 0.8 T, for applied field parallel and perpendicular to the Ti Se2 planes, respectively. The anisotropy ratio γanis = H c2 ab H c2 c is close to 1.6 and nearly temperature independent. The lower critical field (Hc1) values are much smaller (∼32 Oe for H ab and 17 Oe for H c); demagnetizing corrections for field perpendicular to the thin plate crystals are required for the determination of H c1 c. The anisotropy of the critical fields is described well by the anisotropic Ginzburg-Landau (GL) theory, and the characteristic GL parameters are determined and discussed.

Original language	English (US)
Article number	104505
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	75
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.75.104505
State	Published - Mar 12 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.75.104505

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title = "Anisotropic properties of the layered superconductor Cu0.07 Ti Se2",

abstract = "The anisotropic superconducting properties of single crystals of Cu0.07 Ti Se2 were studied by measurements of magnetization and electrical resistivity. Tc is around 3.9 K, and the measured upper critical field (Hc2) values are ∼1.25 and 0.8 T, for applied field parallel and perpendicular to the Ti Se2 planes, respectively. The anisotropy ratio γanis = H c2 ab H c2 c is close to 1.6 and nearly temperature independent. The lower critical field (Hc1) values are much smaller (∼32 Oe for H ab and 17 Oe for H c); demagnetizing corrections for field perpendicular to the thin plate crystals are required for the determination of H c1 c. The anisotropy of the critical fields is described well by the anisotropic Ginzburg-Landau (GL) theory, and the characteristic GL parameters are determined and discussed.",

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T1 - Anisotropic properties of the layered superconductor Cu0.07 Ti Se2

AU - Morosan, E.

AU - Li, Lu

AU - Ong, N. P.

AU - Cava, R. J.

PY - 2007/3/12

Y1 - 2007/3/12

N2 - The anisotropic superconducting properties of single crystals of Cu0.07 Ti Se2 were studied by measurements of magnetization and electrical resistivity. Tc is around 3.9 K, and the measured upper critical field (Hc2) values are ∼1.25 and 0.8 T, for applied field parallel and perpendicular to the Ti Se2 planes, respectively. The anisotropy ratio γanis = H c2 ab H c2 c is close to 1.6 and nearly temperature independent. The lower critical field (Hc1) values are much smaller (∼32 Oe for H ab and 17 Oe for H c); demagnetizing corrections for field perpendicular to the thin plate crystals are required for the determination of H c1 c. The anisotropy of the critical fields is described well by the anisotropic Ginzburg-Landau (GL) theory, and the characteristic GL parameters are determined and discussed.

AB - The anisotropic superconducting properties of single crystals of Cu0.07 Ti Se2 were studied by measurements of magnetization and electrical resistivity. Tc is around 3.9 K, and the measured upper critical field (Hc2) values are ∼1.25 and 0.8 T, for applied field parallel and perpendicular to the Ti Se2 planes, respectively. The anisotropy ratio γanis = H c2 ab H c2 c is close to 1.6 and nearly temperature independent. The lower critical field (Hc1) values are much smaller (∼32 Oe for H ab and 17 Oe for H c); demagnetizing corrections for field perpendicular to the thin plate crystals are required for the determination of H c1 c. The anisotropy of the critical fields is described well by the anisotropic Ginzburg-Landau (GL) theory, and the characteristic GL parameters are determined and discussed.

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Anisotropic properties of the layered superconductor Cu0.07 Ti Se2

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