Projects per year
Abstract
We report a novel mechanism for the electrical injection and detection of out-of-plane spin accumulation via the anomalous spin Hall effect (ASHE), where the direction of the spin accumulation can be controlled by manipulating the magnetization of the ferromagnet. This mechanism is distinct from the spin Hall effect (SHE), where the spin accumulation is created along a fixed direction parallel to an interface. We demonstrate this unique property of the ASHE in nanowires made of permalloy (Py) to inject and detect out-of-plane spin accumulation in a magnetic insulator, yttrium iron garnet (YIG). We show that the efficiency for the injection/detection of out-of-plane spins can be up to 50% of that of in-plane spins. We further report the possibility to detect spin currents parallel to the Py/YIG interface for spins fully oriented in the out-of-plane direction, resulting in a sign reversal of the nonlocal magnon spin signal. The new mechanisms that we have demonstrated are highly relevant for spin torque devices and applications.
Original language | English |
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Journal | Nano Letters |
Early online date | 21 Aug 2018 |
DOIs | |
Publication status | Published - 2018 |
Keywords
- Anomalous spin Hall effect
- Permalloy
- yttrium iron garnet
- out-of-plane spins
- transverse spin current
- electrical spin injection and detection
- magnon spintronics
- spin torque devices
Research Beacons, Institutes and Platforms
- National Graphene Institute
Fingerprint
Dive into the research topics of 'Efficient injection and detection of out-of-plane spins via the anomalous spin Hall effect in permalloy nanowires'. Together they form a unique fingerprint.Projects
- 1 Finished
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CNTQC - Curved nanomembranes for Topological Quantum Computation
Vera Marun, I. (PI)
1/06/16 → 31/05/17
Project: Research
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Explorations on magnon spintronics: from novel spin-orbitronics effects to transistor devices
Vera Marun, I. (Invited speaker)
20 Jul 2020Activity: Talk or presentation › Invited talk › Research
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Member of examining committee, PhD at the University of Groningen
Vera Marun, I. (Examiner)
17 May 2019Activity: Examination › Research
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Condensed Matter Group Seminar, E. C. Stoner Laboratory
Vera Marun, I. (Invited speaker)
21 Nov 2018Activity: Talk or presentation › Invited talk › Research
Press/Media
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Efficient injection and detection of spins
30/08/18
1 item of Media coverage
Press/Media: Expert comment