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Measuring the Spin Polarization of a Metal with a Superconducting Point Contact
Abstract
A superconducting point contact is used to determine the spin polarization at the Fermi energy of several metals. Because the process of supercurrent conversion at a superconductor-metal interface (Andreev reflection) is limited by the minority spin population near the Fermi surface, the differential conductance of the point contact can reveal the spin polarization of the metal. This technique has been applied to a variety of metals where the spin polarization ranges from 35 to 90 percent: Ni 0.8 Fe 0.2 , Ni, Co, Fe, NiMnSb, La 0.7 Sr 0.3 MnO 3 , and CrO 2 .
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Citations
Cited by
Magnetic, structural, and transport properties of the Heusler alloys Co 2 MnSi and NiMnSb
Ritchie, L., Xiao, G., Ji, Y., Chen, T. Y., Chien, C. L., Zhang, M., Chen, J., Liu, Z., Wu, G., & Zhang, X. X. (2003) · Physical Review B · doi:10.1103/physrevb.68.104430 · Cited by 257
Dissipationless Anomalous Hall Current in the Ferromagnetic Spinel CuCr 2 Se 4- x Br x
Lee, W.-L., Watauchi, S., Miller, V. L., Cava, R. J., & Ong, N. P. (2004) · Science · doi:10.1126/science.1094383 · Cited by 223
Search for half-metallic ferrimagnetism in V-based Heusler alloys Mn2VZ (Z = Al, Ga, In, Si, Ge, Sn)
Özdogan, K., Galanakis, I., Şaşioglu, E., & Aktaş, B. (2006) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/18/10/013 · Cited by 169
Metadata
- Authors
- Soulen, R. J., Byers, J. M., Osofsky, M. S., Nadgorny, B., Ambrose, T., Cheng, S. F., Broussard, P. R., Tanaka, C. T., Nowak, J., Moodera, J. S., Barry, A., & Coey, J. M. D.
- Venue
- Science
- Published
- 1998-10-02
- Volume
- 282
- Issue
- 5386
- Pages
- 85-88
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2147227982
- Cited by
- 1,790
- References
- 0
- FWCI
- 37.28
- Type
- journal article
- Language
- en
- Open access
- closed
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- Soulen, R. J., Byers, J. M., Osofsky, M. S., Nadgorny, B., Ambrose, T., Cheng, S. F., Broussard, P. R., Tanaka, C. T., Nowak, J., Moodera, J. S., Barry, A., & Coey, J. M. D. (1998). Measuring the Spin Polarization of a Metal with a Superconducting Point Contact. Science. https://doi.org/10.1126/science.282.5386.85
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
