Broken weak and strong spin rotational symmetries and tunable interactions between phonons and the continuum in 
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Chakkar, Atul G.; Kumar, Deepu; Kumar, Pradeep

doi:10.1103/physrevb.109.134406

Phys. Rev. B

2024

DOI: 10.1103/physrevb.109.134406

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Broken weak and strong spin rotational symmetries and tunable interactions between phonons and the continuum in Cr2Ge2Te6

Atul G. Chakkar,

Deepu Kumar,

Pradeep Kumar

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Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr₂Ge₂Te₆

Samanta,

Iturriaga,

Mai

et al. 2024

Nano Lett.

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The manipulation of spin−phonon coupling in both formations and explorations of magnetism in two-dimensional van der Waals ferromagnetic semiconductors facilitates unprecedented prospects for spintronic devices. The interlayer engineering with spin−phonon coupling promises controllable magnetism via organic cation intercalation. Here, spectroscopic evidence reveals the intercalation effect on the intrinsic magnetic and electronic transitions in quasi-two-dimensional Cr 2 Ge 2 Te 6 using tetrabutyl ammonium (TBA + ) as the intercalant. The temperature evolution of Raman modes, E g 3 and A g 1 , along with the magnetization measurements, unambiguously captures the enhancement of the ferromagnetic Curie temperature in the intercalated heterostructure. Moreover, the E g 4 mode highlights the increased effect of spin−phonon interaction in magnetic-order-induced lattice distortion. Combined with the first-principle calculations, we observed a substantial number of electrons transferred from TBA + to Cr through the interface. The interplay between spin−phonon coupling and magnetic ordering in van der Waals magnets appeals for further understanding of the manipulation of magnetism in layered heterostructures.

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Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr₂Ge₂Te₆

Samanta,

Iturriaga,

Mai

et al. 2024

Nano Lett.

View full text Add to dashboard Cite

show abstract

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Broken weak and strong spin rotational symmetries and tunable interactions between phonons and the continuum in Cr2Ge2Te6

Cited by 1 publication

References 49 publications

Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr₂Ge₂Te₆

Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr₂Ge₂Te₆

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Broken weak and strong spin rotational symmetries and tunable interactions between phonons and the continuum in Cr2Ge2Te6

Cited by 1 publication

References 49 publications

Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr2Ge2Te6

Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr2Ge2Te6

Contact Info

Product

Resources

About

Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr₂Ge₂Te₆

Spin–Phonon Coupling and Magnetic Transition in an Organic Molecule Intercalated Cr₂Ge₂Te₆