Cr enhanced ferromagnetism in La0.5Ba0.5CoO3 due to possible double-exchange interaction

Zhang, Shile; Pi, Li; Wei, Tong; Tan, Shun; Zhang, Changjin; Zhang, Yuheng

doi:10.1016/j.jallcom.2014.12.188

Cited by 6 publications

(1 citation statement)

References 43 publications

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“…A comparison with the reference spectra reveals that the primary Cr valence in both geometries is from Cr 2+ , while the shoulder feature in the top bilayer can be associated with Cr 3+ . The mixed-valence Cr 2+ and Cr 3+ in the top sample critically changes the magnetic interactions to favor ferromagnetic ordering through a Cr 2+ -Cr 3+ double exchange (30)(31)(32). Complementary to this, the absence of any Cr 3+ contribution in the bottom bilayer suggests a weaker ferromagnetic ordering, representing a critical difference between the two interfaces.…”

Section: Spectroscopic Probing For the Origin Of Interface Asymmetrymentioning

confidence: 93%

Termination switching of antiferromagnetic proximity effect in topological insulator

et al. 2020

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This work reports the ferromagnetism of topological insulator, (Bi,Sb)2Te3 (BST), with a Curie temperature of approximately 120 K induced by magnetic proximity effect (MPE) of an antiferromagnetic CrSe. The MPE was shown to be highly dependent on the stacking order of the heterostructure, as well as the interface symmetry: Growing CrSe on top of BST results in induced ferromagnetism, while growing BST on CrSe yielded no evidence of an MPE. Cr-termination in the former case leads to double-exchange interactions between Cr3+ surface states and Cr2+ bulk states. This Cr3+-Cr2+ exchange stabilizes the ferromagnetic order localized at the interface and magnetically polarizes the BST Sb band. In contrast, Se-termination at the CrSe/BST interface yields no detectable MPE. These results directly confirm the MPE in BST films and provide critical insights into the sensitivity of the surface state.

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Section: Spectroscopic Probing For the Origin Of Interface Asymmetrymentioning

confidence: 93%

Termination switching of antiferromagnetic proximity effect in topological insulator

et al. 2020

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Enhancement of ferromagnetism in δ-(Zn,Mn,Li)Se by shape deformation: Based on Zener’s double exchange

Pan

Zhu

Shi

et al. 2015

Journal of Alloys and Compounds

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Strong ferromagnetism of two-dimensional δ–(Zn,Cr)S with shape deformation in both PBE and LDA+U calculations

Zhu

Pan

et al. 2018

Physica B: Condensed Matter

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Cr enhanced ferromagnetism in La0.5Ba0.5CoO3 due to possible double-exchange interaction

Cited by 6 publications

References 43 publications

Termination switching of antiferromagnetic proximity effect in topological insulator

Termination switching of antiferromagnetic proximity effect in topological insulator

Enhancement of ferromagnetism in δ-(Zn,Mn,Li)Se by shape deformation: Based on Zener’s double exchange

Strong ferromagnetism of two-dimensional δ–(Zn,Cr)S with shape deformation in both PBE and LDA+U calculations

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