Quadrupole anomalous Hall effect in magnetically induced electron nematic state
Hiroki Koizumi, Yuichi Yamasaki, Hideto Yanagihara · 2023
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Description
Hiroki Koizumi, Yuichi Yamasaki, and Hideto Yanagihara report an unusual electrical effect in a magnetic oxide film in a 2023 paper. In the Hall effect, a current bends sideways under a magnetic influence. Known forms spread evenly across the plane, but this team found a version whose strength depends on which way the current runs within the plane.
The film is a spinel oxide grown as a thin layer. Its sideways response carried a four-fold pattern tied to current direction, added to the usual uniform part. Cooling the film in a magnetic field could even flip the pattern's sign. The authors trace the effect to an electron nematic state, where electrons favor one direction, born from a stretched magnetic order in the material.
Catalog record
| CREATOR | Hiroki Koizumi, Yuichi Yamasaki, Hideto Yanagihara |
|---|---|
| YEAR | 2023 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 69 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |