All Outputs (9)

Pressure-induced orbital reordering in Na₂CuF₄ (2025)
Journal Article
Hiley, C. I., Crawford, C. A., Bull, C. L., Funnell, N. P., Dey, U., Bristowe, N. C., Walton, R. I., & Senn, M. S. (2025). Pressure-induced orbital reordering in Na₂CuF₄. Physical Review B, 112, Article 035126. https://doi.org/10.1103/m265-k2p4

The high-pressure behaviour of Na₂CuF₄ is explored by powder neutron diffraction and density functional theory (DFT) calculations. A first-order phase transition is observed to take place between 2.4–2.9 GPa, involving a reorientation of the Jahn-Tel... Read More about Pressure-induced orbital reordering in Na₂CuF₄.

Pressure-induced enhancement of polar distortions in a metal and implications for the Rashba spin splitting (2025)
Journal Article
Ladbrook, E., Dey, U., Bristowe, N. C., Perry, R. S., Daisenberger, D., Warren, M. R., & Senn, M. S. (2025). Pressure-induced enhancement of polar distortions in a metal and implications for the Rashba spin splitting. Physical Review B, 111(20), Article 205110. https://doi.org/10.1103/physrevb.111.205110

Polar metals are an intriguing class of materials that feature a polar crystal structure while also exhibiting metallic conductivity. The unique properties of polar metals challenge expectations, making way for the exploration of exotic phenomena suc... Read More about Pressure-induced enhancement of polar distortions in a metal and implications for the Rashba spin splitting.

Prediction of Room-Temperature Electric Field Reversal of Magnetization in the Family of A4B3O9 Layered Oxides (2025)
Journal Article
Dey, U., McCabe, E. E., Íñiguez-González, J., & Bristowe, N. C. (2025). Prediction of Room-Temperature Electric Field Reversal of Magnetization in the Family of A4B3O9 Layered Oxides. Physical Review Letters, 134(13), Article 136801. https://doi.org/10.1103/PhysRevLett.134.136801

The promise of a strong magnetoelectric (ME) coupling in a multiferroic (MF) material is not only of fundamental interest, but also forms the basis of next generation memory devices where the direction of magnetization can be reversed by an external... Read More about Prediction of Room-Temperature Electric Field Reversal of Magnetization in the Family of A4B3O9 Layered Oxides.

Symmetry-informed design of magnetoelectric coupling in the manganite perovskite CeBaMn2O6 (2024)
Journal Article
Simpson, S., Scott, C. A. M., Pomiro, F., Tidey, J. P., Dey, U., Orlandi, F., Manuel, P., Lees, M. R., Hong, Z.-M., Chen, W.-T., Bristowe, N. C., & Senn, M. S. (2024). Symmetry-informed design of magnetoelectric coupling in the manganite perovskite CeBaMn2O6. Journal of Materials Chemistry C Materials for optical and electronic devices, 12(37), 15058-15069. https://doi.org/10.1039/d4tc02743d

Magnetoelectric multiferroics hold great promise for the development of new sustainable memory devices. However, practical applications of many existing multiferroic materials are infeasible due to the weak nature of the coupling between the magnetic... Read More about Symmetry-informed design of magnetoelectric coupling in the manganite perovskite CeBaMn2O6.

Structural origins of dielectric anomalies in the filled tetragonal tungsten bronze Sr 2 NaNb 5 O 15 (2024)
Journal Article
Tidey, J., Dey, U., Sanchez, A., Chen, W., Chen, B., Chuang, Y., …Senn, M. (2024). Structural origins of dielectric anomalies in the filled tetragonal tungsten bronze Sr 2 NaNb 5 O 15. Communications Materials, 5(1), Article 71. https://doi.org/10.1038/s43246-024-00508-1

The tetragonal tungsten bronze, Sr2NaNb5O15, shows promise for application in high-temperature high-efficiency capacitors vital for the sustainable energy revolution. Previously, the structural complexity of this and related materials has obscured th... Read More about Structural origins of dielectric anomalies in the filled tetragonal tungsten bronze Sr 2 NaNb 5 O 15.

Correlation between electronic polarization and shift current in cubic and hexagonal semiconductors LiZnX (X=P,As,Sb) (2024)
Journal Article
Dey, U., van den Brink, J., & Ray, R. (2024). Correlation between electronic polarization and shift current in cubic and hexagonal semiconductors LiZnX (X=P,As,Sb). Physical Review Materials, 8(2), Article 025001. https://doi.org/10.1103/physrevmaterials.8.025001

First-principles investigation of the magnetoelectric properties of Ba 7 Mn 4 O 15 (2023)
Journal Article
Dey, U., Senn, M. S., & Bristowe, N. (2024). First-principles investigation of the magnetoelectric properties of Ba 7 Mn 4 O 15. Journal of Physics: Condensed Matter, 36(9), Article 095701. https://doi.org/10.1088/1361-648x/ad0d27

Type-II multiferroics, in which the magnetic order breaks inversion symmetry, are appealing for both fundamental and applied research due their intrinsic coupling between magnetic and electrical orders. Using first-principles calculations we study th... Read More about First-principles investigation of the magnetoelectric properties of Ba 7 Mn 4 O 15.

Electric field and strain-induced band-gap engineering and manipulation of the Rashba spin splitting in Janus van der Waals heterostructures (2022)
Journal Article
Patel, S., Dey, U., Adhikari, N. P., & Taraphder, A. (2022). Electric field and strain-induced band-gap engineering and manipulation of the Rashba spin splitting in Janus van der Waals heterostructures. Physical Review B, 106(3), Article 035125. https://doi.org/10.1103/physrevb.106.035125

The compositional as well as structural asymmetries in Janus transition metal dichalcogenides (J-TMDs) and their van der Waals heterostructures (vdW HSs) induce an intrinsic Rashba spin splitting. We investigate the variation of band gaps and the Ras... Read More about Electric field and strain-induced band-gap engineering and manipulation of the Rashba spin splitting in Janus van der Waals heterostructures.

Multiple low-energy excitons and optical response of d0 double perovskite Ba2ScTaO6 (2022)
Journal Article
Himanshu, A., Kumar, S., Dey, U., & Ray, R. (2022). Multiple low-energy excitons and optical response of d0 double perovskite Ba2ScTaO6. Physica B: Condensed Matter, 637, Article 413856. https://doi.org/10.1016/j.physb.2022.413856

Large bandgap insulators are considered promising for applications such as photocatalysts, dielectric resonators and interference lters. Based on synchrotron X-ray diraction, diuse re ectance measurement and density functional theory, we report the c... Read More about Multiple low-energy excitons and optical response of d0 double perovskite Ba2ScTaO6.