The role of magnetic anisotropy in the magnetoresistance of Cr2O3/Al2O3 thin film antiferromagnets
被引:0
作者:
Wisser, Jacob J.
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机构:
Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USAStanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
Wisser, Jacob J.
[1
,2
]
Xue, Fen
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机构:
Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA
Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USAStanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
Xue, Fen
[2
,3
]
Wang, Shan X.
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机构:
Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA
Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USAStanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
Wang, Shan X.
[2
,3
,4
]
Suzuki, Yuri
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机构:
Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USAStanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
Suzuki, Yuri
[1
,2
]
机构:
[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
[2] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA
[3] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[4] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
SPIN HALL MAGNETORESISTANCE;
GENERATION;
STRAIN;
CR2O3;
D O I:
10.1063/5.0195641
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
The magnetic states of antiferromagnetic insulating thin films are a promising medium for information storage, but characterization of these states has proven to be challenging. One approach is via magnetotransport measurements in an adjacent heavy metal layer. To this end, we synthesized and characterized a series of Cr2O3 films and bilayers on Al2O3 substrates with three different orientations: m-plane, a-plane, and c-plane. X-ray diffraction results demonstrated orientation control of the Cr2O3 thin film, with m-plane films displaying a higher degree of mosaic spread than the a- and c-plane films. Reciprocal space maps showed that the films are mostly relaxed, although there was a small and different degree of strain in each orientation. The m-plane films were under 2% compressive strain, the a-plane film was under 0.5% compressive strain, and the c-plane film was completely relaxed to bulk values. To probe the magnetic state of the films, we measured the angular dependent magnetoresistance of Cr2O3/Pt bilayers for each orientation. We found a nontrivial temperature dependence of the sign of the magnetoresistance, pointing to the complex interplay between the exchange and anisotropy energies that vary with orientation. We propose that strain and mosaic spread may contribute to a difference in magnetic anisotropies among the samples and the resulting temperature dependence of the magnetoresistance. This work demonstrates the importance of considering the competition between antiferromagnetic exchange and magnetic anisotropy when storing information in the spin state of an antiferromagnetic insulator.
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Velez, Sauel
Golovach, Vitaly N.
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Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, Spain
Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Golovach, Vitaly N.
Bedoya-Pinto, Amilcar
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h-index: 0
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CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Bedoya-Pinto, Amilcar
Isasa, Miren
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CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Isasa, Miren
Sagasta, Edurne
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CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Sagasta, Edurne
Abadia, Mikel
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Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Abadia, Mikel
Rogero, Celia
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机构:
Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Rogero, Celia
Hueso, Luis E.
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机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Hueso, Luis E.
Bergeret, F. Sebastian
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机构:
Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Bergeret, F. Sebastian
Casanova, Felix
论文数: 0引用数: 0
h-index: 0
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Velez, Sauel
Golovach, Vitaly N.
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h-index: 0
机构:
Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, Spain
Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Golovach, Vitaly N.
Bedoya-Pinto, Amilcar
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h-index: 0
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Bedoya-Pinto, Amilcar
Isasa, Miren
论文数: 0引用数: 0
h-index: 0
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Isasa, Miren
Sagasta, Edurne
论文数: 0引用数: 0
h-index: 0
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Sagasta, Edurne
Abadia, Mikel
论文数: 0引用数: 0
h-index: 0
机构:
Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Abadia, Mikel
Rogero, Celia
论文数: 0引用数: 0
h-index: 0
机构:
Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Rogero, Celia
Hueso, Luis E.
论文数: 0引用数: 0
h-index: 0
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Hueso, Luis E.
Bergeret, F. Sebastian
论文数: 0引用数: 0
h-index: 0
机构:
Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Donostia San Sebastian 20018, Basque Country, Spain
DIPC, Donostia San Sebastian 20018, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Bergeret, F. Sebastian
Casanova, Felix
论文数: 0引用数: 0
h-index: 0
机构:
CIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain
Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, SpainCIC nanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain