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High-temperature weak ferromagnetism in a low-density free-electron gas
Open accessAbstract
The magnetic properties of the ground state of a low-density free-electron gas in three dimensions have been the subject of theoretical speculation and controversy for seven decades. Not only is this a difficult theoretical problem to solve, it is also a problem which has not hitherto been directly addressed experimentally. Here we report measurements on electron-doped calcium hexaboride (CaB6) which, we argue, show that—at a density of 7× 1019 electrons cm−3—the ground state is ferromagnetically polarized with a saturation moment of 0.07 µB per electron. Surprisingly, the magnetic ordering temperature of this itinerant ferromagnet is 600 K, of the order of the Fermi temperature of the electron gas.
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Citations
Cited by
Ultrahigh sensitivity magnetic field and magnetization measurements with an atomic magnetometer
Dang, H. B., Maloof, A. C., & Romalis, M. V. (2010) · Applied Physics Letters · doi:10.1063/1.3491215 · Cited by 891
Metadata
- Authors
- Young, D. P., Hall, D., Torelli, M. E., Fisk, Z., Sarrao, J. L., Thompson, J. D., Ott, H.-R., Oseroff, S. B., Goodrich, R. G., & Zysler, R.
- Venue
- Nature
- Published
- 1999-02
- Volume
- 397
- Issue
- 6718
- Pages
- 412-414
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W1517971213
- Cited by
- 430
- References
- 0
- FWCI
- 32.39
- Type
- journal article
- Language
- en
- Open access
- green
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- Young, D. P., Hall, D., Torelli, M. E., Fisk, Z., Sarrao, J. L., Thompson, J. D., Ott, H.-R., Oseroff, S. B., Goodrich, R. G., & Zysler, R. (1999). High-temperature weak ferromagnetism in a low-density free-electron gas. Nature. https://doi.org/10.1038/17081
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