Details

Autor(en) / Beteiligte

• Zhang, B H
• Hou, Y S
• Wang, Z
• Wu, R Q

Titel

First-principles studies of spin-phonon coupling in monolayer Cr2Ge2Te6

Ist Teil von

• Physical review. B, 2019-12, Vol.100 (22)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2019

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We perform systematic first-principles calculations to investigate the spin-phonon coupling (SPC) of Cr2Ge2Te6 (CGT) monolayer (ML). It is found that the Eg phonon mode at 211.8cm−1 may have a SPC as large as 3.19cm−1, as it alters the direct exchange interaction across Cr-Cr pairs. The strength of SPC of the CGT ML can be decreased by an in-plane lattice stretch. These results provide useful insights for the understanding of SPC in two-dimensional magnetic semiconductors and may guide the design of spintronic and spin Seebeck materials and devices.