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Unveiling Lattice Dynamics and a Hidden Structural Transition in the 2D Ferromagnet AgVPSe via Raman Spectroscopy
Thi Hai Yen Pham, Po-hao Chang, Aidan C. Malloy +7
Transition-metal chalcophosphates (TMCs) are two-dimensional (2D) van der Waals materials supporting a broad range of electronic and magnetic properties. Among quaternary TMCs, AgV…
The Origin of the Observed Raman Peaks in α-MnTe
Nurul Azam, Syed Mohammad Shahed, Liam T. Schmidt +21
The Raman spectrum of the room-temperature altermagnet -MnTe is reported to contain unassigned peaks at 120(3) cm and 140(3) cm, absent from the predicted phonon s…
Measuring chiral phonons
Rahul Rao, Hanyu Zhu, Nicholas Kotov +7
Chiral phonons are quantized vibrations where the atomic motion in a solid breaks improper rotation symmetries. In many cases, chiral phonons possess angular momenta and are theref…
Raman fingerprints of spin-phonon coupling and magnetic transition in an organic molecule intercalated Cr2Ge2Te6
Sudeshna Samanta, Hector Iturriaga, Thuc T. Mai +9
The manipulation of spin-phonon coupling in both formations and explorations of magnetism in two-dimensional van der Waals ferromagnetic semiconductors facilitates unprecedented pr…
Optical Signatures of Strain Differences in Epitaxial Graphene Nanoribbons
Heather M. Hill, Ching-Chen Yeh, Swapnil M. Mhatre +6
We demonstrate the preparation of both armchair and zigzag epitaxial graphene nanoribbons (GNRs) on 4H-SiC using a polymer-assisted, sublimation growth method. Historically, the pr…
Analysis of Raman and Ellipsometric Responses of NbWSe alloys
Albert F. Rigosi, Heather M. Hill, Sergiy Krylyuk +4
The growth of transition metal dichalcogenide (TMDC) alloys provides an opportunity to experimentally access information elucidating how optical properties change with gradual subs…