Spin-orbit scattering effect on electron-electron interactions in disordered metals

Juhn-Jong Lin; Shih-ying Hsu; J. C. Lue; P. J. Sheng

doi:10.1016/S0022-3697(01)00113-5

Spin-orbit scattering effect on electron-electron interactions in disordered metals

Juhn-Jong Lin^*, Shih-ying Hsu, J. C. Lue, P. J. Sheng

^*Corresponding author for this work

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

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Abstract

We have measured the low-temperature resistivities of a series of bulk crystalline disordered Ti_73-xAl₂₇Sn_x alloys (x ≲ 5) as well as the sheet resistances of a number of thin ferromagnetic Ni films ( ≈ 120 Å thick) sandwiching an ultrathin Ag or Au ( ≲ 5 Å) layer. The level of impurities (concentration of Sn in the former case, and thickness of Ag or Au in the latter case) is progressively increased in order to enhance the spin-orbit scattering in a controllable manner. The influence of the spin-orbit scattering on the electron-electron interaction effects is studied from the temperature dependence of resistivities (sheet resistance) at low temperatures. We find that the electron-electron interaction contribution to the resistivities (sheet resistances) increases slightly with increasing spin-orbit scattering. Our observation is discussed in terms of the current theoretical concept for the electron-electron interactions in disordered metals.

Original language	English
Pages (from-to)	1813-1818
Number of pages	6
Journal	Journal of Physics and Chemistry of Solids
Volume	62
Issue number	9-10
DOIs	https://doi.org/10.1016/S0022-3697(01)00113-5
State	Published - 10 Sep 2001

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title = "Spin-orbit scattering effect on electron-electron interactions in disordered metals",

abstract = "We have measured the low-temperature resistivities of a series of bulk crystalline disordered Ti73-xAl27Snx alloys (x ≲ 5) as well as the sheet resistances of a number of thin ferromagnetic Ni films ( ≈ 120 {\AA} thick) sandwiching an ultrathin Ag or Au ( ≲ 5 {\AA}) layer. The level of impurities (concentration of Sn in the former case, and thickness of Ag or Au in the latter case) is progressively increased in order to enhance the spin-orbit scattering in a controllable manner. The influence of the spin-orbit scattering on the electron-electron interaction effects is studied from the temperature dependence of resistivities (sheet resistance) at low temperatures. We find that the electron-electron interaction contribution to the resistivities (sheet resistances) increases slightly with increasing spin-orbit scattering. Our observation is discussed in terms of the current theoretical concept for the electron-electron interactions in disordered metals.",

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T1 - Spin-orbit scattering effect on electron-electron interactions in disordered metals

AU - Lin, Juhn-Jong

AU - Hsu, Shih-ying

AU - Lue, J. C.

AU - Sheng, P. J.

PY - 2001/9/10

Y1 - 2001/9/10

N2 - We have measured the low-temperature resistivities of a series of bulk crystalline disordered Ti73-xAl27Snx alloys (x ≲ 5) as well as the sheet resistances of a number of thin ferromagnetic Ni films ( ≈ 120 Å thick) sandwiching an ultrathin Ag or Au ( ≲ 5 Å) layer. The level of impurities (concentration of Sn in the former case, and thickness of Ag or Au in the latter case) is progressively increased in order to enhance the spin-orbit scattering in a controllable manner. The influence of the spin-orbit scattering on the electron-electron interaction effects is studied from the temperature dependence of resistivities (sheet resistance) at low temperatures. We find that the electron-electron interaction contribution to the resistivities (sheet resistances) increases slightly with increasing spin-orbit scattering. Our observation is discussed in terms of the current theoretical concept for the electron-electron interactions in disordered metals.

AB - We have measured the low-temperature resistivities of a series of bulk crystalline disordered Ti73-xAl27Snx alloys (x ≲ 5) as well as the sheet resistances of a number of thin ferromagnetic Ni films ( ≈ 120 Å thick) sandwiching an ultrathin Ag or Au ( ≲ 5 Å) layer. The level of impurities (concentration of Sn in the former case, and thickness of Ag or Au in the latter case) is progressively increased in order to enhance the spin-orbit scattering in a controllable manner. The influence of the spin-orbit scattering on the electron-electron interaction effects is studied from the temperature dependence of resistivities (sheet resistance) at low temperatures. We find that the electron-electron interaction contribution to the resistivities (sheet resistances) increases slightly with increasing spin-orbit scattering. Our observation is discussed in terms of the current theoretical concept for the electron-electron interactions in disordered metals.

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U2 - 10.1016/S0022-3697(01)00113-5

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VL - 62

SP - 1813

EP - 1818

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 9-10

ER -

Spin-orbit scattering effect on electron-electron interactions in disordered metals

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