Anisotropy of upper critical field in the (110)t and (001)t planes for single-crystal La1.86Sr0.14CuO4

Tetsuo Hanaguri; Tetsuo Fukase; Yoji Koike; Isao Tanaka; Hironao Kojima

doi:10.1016/S0921-4526(09)80310-4

Anisotropy of upper critical field in the (110)_t and (001)_t planes for single-crystal La_1.86Sr_0.14CuO₄

Tetsuo Hanaguri, Tetsuo Fukase, Yoji Koike, Isao Tanaka, Hironao Kojima

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Anisotropy of the upper critical field H_C2 has been investigated in detail for single-crystal La_1.86Sr_0.14CuO₄ grown by the TSFZ method. When magnetic fields are applied in the (110)_t plane, large anisotropy of H_c2, H^⊥_c2/H^″_c2 ≳ 10, is observed and the angular dependence is well expressed by the effective mass model suitable for anisotropic 3-dimensional superconductors. When magnetic fields are applied in the (001)_t plane, namely in the CuO₂ plane, small but clear anisotropy of H_c2 with 4-fold symmetry is found. This is not attributed to the anisotropy of H_c2 or the critical current due to the twin structure in the orthorhombic phase, but seems due to the anisotropy originating in the electronic state in the CuO₂ plane.

Original language	English
Pages (from-to)	1449-1450
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	165-166
DOIs	https://doi.org/10.1016/S0921-4526(09)80310-4
Publication status	Published - 1990

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(09)80310-4

Cite this

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title = "Anisotropy of upper critical field in the (110)t and (001)t planes for single-crystal La1.86Sr0.14CuO4",

abstract = "Anisotropy of the upper critical field HC2 has been investigated in detail for single-crystal La1.86Sr0.14CuO4 grown by the TSFZ method. When magnetic fields are applied in the (110)t plane, large anisotropy of Hc2, H⊥c2/H″c2 ≳ 10, is observed and the angular dependence is well expressed by the effective mass model suitable for anisotropic 3-dimensional superconductors. When magnetic fields are applied in the (001)t plane, namely in the CuO2 plane, small but clear anisotropy of Hc2 with 4-fold symmetry is found. This is not attributed to the anisotropy of Hc2 or the critical current due to the twin structure in the orthorhombic phase, but seems due to the anisotropy originating in the electronic state in the CuO2 plane.",

author = "Tetsuo Hanaguri and Tetsuo Fukase and Yoji Koike and Isao Tanaka and Hironao Kojima",

year = "1990",

doi = "10.1016/S0921-4526(09)80310-4",

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T1 - Anisotropy of upper critical field in the (110)t and (001)t planes for single-crystal La1.86Sr0.14CuO4

AU - Hanaguri, Tetsuo

AU - Fukase, Tetsuo

AU - Koike, Yoji

AU - Tanaka, Isao

AU - Kojima, Hironao

PY - 1990

Y1 - 1990

N2 - Anisotropy of the upper critical field HC2 has been investigated in detail for single-crystal La1.86Sr0.14CuO4 grown by the TSFZ method. When magnetic fields are applied in the (110)t plane, large anisotropy of Hc2, H⊥c2/H″c2 ≳ 10, is observed and the angular dependence is well expressed by the effective mass model suitable for anisotropic 3-dimensional superconductors. When magnetic fields are applied in the (001)t plane, namely in the CuO2 plane, small but clear anisotropy of Hc2 with 4-fold symmetry is found. This is not attributed to the anisotropy of Hc2 or the critical current due to the twin structure in the orthorhombic phase, but seems due to the anisotropy originating in the electronic state in the CuO2 plane.

AB - Anisotropy of the upper critical field HC2 has been investigated in detail for single-crystal La1.86Sr0.14CuO4 grown by the TSFZ method. When magnetic fields are applied in the (110)t plane, large anisotropy of Hc2, H⊥c2/H″c2 ≳ 10, is observed and the angular dependence is well expressed by the effective mass model suitable for anisotropic 3-dimensional superconductors. When magnetic fields are applied in the (001)t plane, namely in the CuO2 plane, small but clear anisotropy of Hc2 with 4-fold symmetry is found. This is not attributed to the anisotropy of Hc2 or the critical current due to the twin structure in the orthorhombic phase, but seems due to the anisotropy originating in the electronic state in the CuO2 plane.

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Anisotropy of upper critical field in the (110)_t and (001)_t planes for single-crystal La_1.86Sr_0.14CuO₄

Abstract

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