Abstract
A new heterostructure is developed in which fractional monolayers of magnetic ions are introduced "digitally" within a semiconductor quantum well. Rearranging moments within two-dimensional (2D) planes provides additional control over their interactions, yielding tunable two-level electronic systems in which spin splittings are significantly larger than inhomogeneous linewidths in modest magnetic fields. Femtosecond-resolved electronic and magnetic spectroscopies reveal spin-flip scattering dependent only on the Zeeman energy but not the local magnetic environment, and long-lived dynamic magnetizations.
Original language | English (US) |
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Pages (from-to) | 505-508 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 75 |
Issue number | 3 |
DOIs | |
State | Published - 1995 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy