TY - JOUR
T1 - Understanding Signatures of Emergent Magnetism in Topological Insulator/Ferrite Bilayers
AU - Riddiford, Lauren J.
AU - Grutter, Alexander J.
AU - Pillsbury, Timothy
AU - Stanley, Max
AU - Reifsnyder Hickey, Danielle
AU - Li, Peng
AU - Alem, Nasim
AU - Samarth, Nitin
AU - Suzuki, Yuri
N1 - Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/3/25
Y1 - 2022/3/25
N2 - Magnetic insulator-topological insulator heterostructures have been studied in search of chiral edge states via proximity induced magnetism in the topological insulator, but these states have been elusive. We identified MgAl0.5Fe1.5O4/Bi2Se3 bilayers for a possible magnetic proximity effect. Electrical transport and polarized neutron reflectometry suggest a proximity effect, but structural data indicate a disordered interface as the origin of the magnetic response. Our results provide a strategy via correlation of microstructure with magnetic data to confirm a magnetic proximity effect.
AB - Magnetic insulator-topological insulator heterostructures have been studied in search of chiral edge states via proximity induced magnetism in the topological insulator, but these states have been elusive. We identified MgAl0.5Fe1.5O4/Bi2Se3 bilayers for a possible magnetic proximity effect. Electrical transport and polarized neutron reflectometry suggest a proximity effect, but structural data indicate a disordered interface as the origin of the magnetic response. Our results provide a strategy via correlation of microstructure with magnetic data to confirm a magnetic proximity effect.
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U2 - 10.1103/PhysRevLett.128.126802
DO - 10.1103/PhysRevLett.128.126802
M3 - Article
C2 - 35394317
AN - SCOPUS:85127539586
SN - 0031-9007
VL - 128
JO - Physical review letters
JF - Physical review letters
IS - 12
M1 - 126802
ER -