Spin transport in antiferromagnetic NiO and magnetoresistance in Y3Fe5O12/NiO/Pt structures
Abstract
Here, we have studied spin transport and magnetoresistance in yttrium iron garnet (YIG)/NiO/Pt trilayers with varied NiO thickness. To characterize the spin transport through NiO we excite ferromagnetic resonance in YIG with a microwave frequency magnetic field and detect the voltage associated with the inverse spin-Hall effect (ISHE) in the Pt layer. The ISHE signal is found to decay exponentially with the NiO thickness with a characteristic decay length of 3.9 nm. This is contrasted with the magnetoresistance in these same structures. The symmetry of the magnetoresistive response is consistent with spin-Hall magnetoresistance (SMR). However, in contrast to the ISHE response, as the NiO thickness increases the SMR signal goes towards zero abruptly at a NiO thickness of ≃ 4 nm, highlighting the different length scales associated with the spin-transport in NiO and SMR in such trilayers.
- Authors:
-
- Department of Physics, New York University, New York, New York 10003, USA
- Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA
- Stanford Synchrotron Radiation Lightsource, Menlo Park, California 94025, USA
- Publication Date:
- Research Org.:
- New York Univ. (NYU), NY (United States); Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1337435
- Alternate Identifier(s):
- OSTI ID: 1393525; OSTI ID: 1421315
- Grant/Contract Number:
- SC0012670
- Resource Type:
- Published Article
- Journal Name:
- AIP Advances
- Additional Journal Information:
- Journal Name: AIP Advances Journal Volume: 7 Journal Issue: 5; Journal ID: ISSN 2158-3226
- Publisher:
- American Institute of Physics
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE; Magnetoresistance; Electric measurements; Antiferromagnetism; Sputter deposition; Multilayers
Citation Formats
Hung, Yu-Ming, Hahn, Christian, Chang, Houchen, Wu, Mingzhong, Ohldag, Hendrik, and Kent, Andrew D. Spin transport in antiferromagnetic NiO and magnetoresistance in Y3Fe5O12/NiO/Pt structures. United States: N. p., 2016.
Web. doi:10.1063/1.4972998.
Hung, Yu-Ming, Hahn, Christian, Chang, Houchen, Wu, Mingzhong, Ohldag, Hendrik, & Kent, Andrew D. Spin transport in antiferromagnetic NiO and magnetoresistance in Y3Fe5O12/NiO/Pt structures. United States. https://doi.org/10.1063/1.4972998
Hung, Yu-Ming, Hahn, Christian, Chang, Houchen, Wu, Mingzhong, Ohldag, Hendrik, and Kent, Andrew D. Thu .
"Spin transport in antiferromagnetic NiO and magnetoresistance in Y3Fe5O12/NiO/Pt structures". United States. https://doi.org/10.1063/1.4972998.
@article{osti_1337435,
title = {Spin transport in antiferromagnetic NiO and magnetoresistance in Y3Fe5O12/NiO/Pt structures},
author = {Hung, Yu-Ming and Hahn, Christian and Chang, Houchen and Wu, Mingzhong and Ohldag, Hendrik and Kent, Andrew D.},
abstractNote = {Here, we have studied spin transport and magnetoresistance in yttrium iron garnet (YIG)/NiO/Pt trilayers with varied NiO thickness. To characterize the spin transport through NiO we excite ferromagnetic resonance in YIG with a microwave frequency magnetic field and detect the voltage associated with the inverse spin-Hall effect (ISHE) in the Pt layer. The ISHE signal is found to decay exponentially with the NiO thickness with a characteristic decay length of 3.9 nm. This is contrasted with the magnetoresistance in these same structures. The symmetry of the magnetoresistive response is consistent with spin-Hall magnetoresistance (SMR). However, in contrast to the ISHE response, as the NiO thickness increases the SMR signal goes towards zero abruptly at a NiO thickness of ≃ 4 nm, highlighting the different length scales associated with the spin-transport in NiO and SMR in such trilayers.},
doi = {10.1063/1.4972998},
journal = {AIP Advances},
number = 5,
volume = 7,
place = {United States},
year = {Thu Dec 22 00:00:00 EST 2016},
month = {Thu Dec 22 00:00:00 EST 2016}
}
https://doi.org/10.1063/1.4972998
Web of Science
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