Abstract
In a ferromagnet, an applied electric field E invariably produces an anomalous Hall current JH that flows perpendicular to the plane defined by E and M (the magnetization). For decades, the question of whether JH is dissipationless (independent of the scattering rate) has been debated without experimental resolution. In the ferromagnetic spinel CuCr 2Se4-xBrx′, the resistivity ρ (at low temperature) may be increased by several decades by varying x (Br) without degrading M. We show that JH/E (normalized per carrier, at 5 kelvin) remains unchanged throughout. In addition to confirming the dissipationless nature of JH, our finding has implications for the generation and study of spin-Hall currents in bulk samples.
Original language | English (US) |
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Pages (from-to) | 1647-1649 |
Number of pages | 3 |
Journal | Science |
Volume | 303 |
Issue number | 5664 |
DOIs | |
State | Published - Mar 12 2004 |
All Science Journal Classification (ASJC) codes
- General