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Ferroelastic exciton splitting in hybrid perovskite nanowalls
Afreen, J. Delgado-Alvarez, H. Krishna Mishra +9
Hybrid metal-halide perovskites are soft semiconductors in which electronic excitations are strongly influenced by lattice distortions and structural phase transitions. An importan…
Evidence of spin-phonon-charge coupling in quasi-one-dimensional Ising spin chain system -CoVO
Debismita Naik, Souvick Chakraborty, Akriti Singh +5
The quasi-one-dimensional Ising spin chain system -CoVO is considered to exhibit fascinating magnetic properties at lower temperatures. We comprehensively study magnetic…
Electron-phonon interactions and tensor analysis in topological insulator bismuth telluride using angle resolved polarized Raman spectroscopy
Aditya Singh, Anna Elsukova, Divya Rawat +6
We report on the angle-resolved polarized Raman spectroscopy and estimation of the Raman tensor elements using both classical and quantum treatments to analyse the polarized Raman…
Defect-mediated electron-phonon coupling in halide double perovskite
Aprajita Joshi, Sajid Saikia, Shalini Badola +2
Optically active defects often play a crucial role in governing the light emission as well as the electronic properties of materials. Moreover, defect-mediated states in the mid-ga…
Ferrimagnetic hexagonal MnCuGe Heusler alloy with a low-temperature spin-glass state
Abhinav Kumar Khorwal, Sonu Vishvakarma, Sujoy Saha +5
An extensive experimental investigation on the structural, static magnetic, and non-equilibrium dynamical properties of polycrystalline MnCuGe Heusler alloy using powder X-ray…
Signatures of novel magnon-phonon coupling in frustrated double perovskite square lattices
Shalini Badola, Aprajita Joshi, Akriti Singh +1
Low-dimensional frustrated magnetic square networks feature a variety of unconventional phases with novel emergent excitations. Often these excitations are intertwined and manifest…
Spin-phonon coupling suppressing the structural transition in perovskite-like oxide
Shalini Badola, Supratik Mukherjee, Greeshma Sunil +5
Multifunctional properties in quantum systems require the interaction between different degrees of freedom. As such, spin-phonon coupling emerges as an ideal mechanism to tune mult…