| First-principles investigation of the structural, dynamical, and dielectric properties of kesterite, stannite, and PMCA phases of SP Ramkumar, Y Gillet, A Miglio, MJ Van Setten, X Gonze, GM Rignanese Physical Review B 94 (22), 224302, 2016 | 32* | 2016 |
| Insights into cation disorder and phase transitions in CZTS from a first-principles approach SP Ramkumar, A Miglio, MJ Van Setten, D Waroquiers, G Hautier, ... Physical Review Materials 2 (8), 085403, 2018 | 29 | 2018 |
| Revealing pressure-driven structural transitions in the hybrid improper ferroelectric KA Smith, SP Ramkumar, NC Harms, AJ Clune, X Xu, SW Cheong, Z Liu, ... Physical Review B 104 (6), 064106, 2021 | 10 | 2021 |
| Octahedral rotations in Ruddlesden-Popper layered oxides under pressure from first principles SP Ramkumar, EA Nowadnick Physical Review B 104 (14), 144105, 2021 | 6 | 2021 |
| Pressure-induced phase transition and phonon softening in KA Smith, SP Ramkumar, NC Harms, AJ Clune, SW Cheong, Z Liu, ... Physical Review B 104 (9), 094109, 2021 | 5 | 2021 |
| First-principles investigation of CZTS Raman spectra SP Ramkumar, G Petretto, W Chen, HPC Miranda, X Gonze, ... Physical Review Materials 6 (3), 035403, 2022 | 4 | 2022 |
| First principles investigation of the structural, dynamical, dielectric properties of kesterite, stannite and PMCA phases of CuZnSnS S Poyyapakkam Ramkumar, Y Gillet, A Miglio, M J. van Setten, X Gonze, ... APS Meeting Abstracts 62 (4), 2017 | 4 | 2017 |
| Manipulation of spin orientation via ferroelectric switching in Fe-doped from first principles K Inzani, N Pokhrel, N Leclerc, Z Clemens, SP Ramkumar, SM Griffin, ... Physical Review B 105 (5), 054434, 2022 | 3 | 2022 |
| Structural, vibrational, and electronic properties of trigonal Cu2SrSnS4 photovoltaic absorber from first-principles calculations SP Ramkumar Mater. Sci. Res. India 17, 07-12, 2020 | 2 | 2020 |
| CZTS Raman spectra beyond kesterite: a first-principles study SP Ramkumar, HPC Miranda, X Gonze, GM Rignanese arXiv preprint arXiv:2101.04472, 2021 | 1 | 2021 |
| Real-Space Infrared Spectroscopy of Ferroelectric Domain Walls in Multiferroic h-(Lu,Sc)FeO3 KA Smith, SP Ramkumar, K Du, X Xu, SW Cheong, SN Gilbert Corder, ... ACS applied materials & interfaces 15 (5), 7562-7571, 2023 | | 2023 |
| Manipulation of spin orientation in iron-doped ferroelectric oxides from first principles E Nowadnick, K Inzani, N Pokhrel, N Leclerc, S Ramkumar, Z Clemens, ... APS March Meeting Abstracts 2023, M41. 009, 2023 | | 2023 |
| Manipulation of spin orientation via ferroelectric switching in Fe-doped Bi2WO6 from first principles N Pokhrel, K Inzani, N Leclerc, Z Clemens, SP Ramkumar, SM Griffin, ... LBNL Molecular Foundry User Meeting, 2022 | | 2022 |
| Role of structure, energetics, and electronic structure in determining the pressure response of octahedral rotations in Ruddlesden-Popper layered perovskites S Poyyapakkam Ramkumar, E Nowadnick APS March Meeting Abstracts 2021, E53. 010, 2021 | | 2021 |
| Octahedral rotations in Ruddlesden-Popper layered perovskites under pressure SP Ramkumar, EA Nowadnick UC Merced - American Physical Society (APS) - March Meeting, Merced, USA, 2020 | | 2020 |
| Octahedral rotations in Ruddlesden-Popper layered perovskites under pressure SP Ramkumar, EA Nowadnick Materials and Biomaterials Science and Engineering (Graduate Visitation …, 2020 | | 2020 |
| Octahedral rotations in Ruddlesden-Popper layered perovskites under pressure SP Ramkumar, EA Nowadnick Fundamental Physics of Ferroelectrics and Related Materials, Maryland, USA, 2020 | | 2020 |
| Effect of pressure and cation ordering on n=2 Ruddlesden-Popper oxides from first principles SP Ramkumar, EA Nowadnick Recent developments in Electronic Structure at University of Illinois Urbana …, 2019 | | 2019 |
| Cation disorder in kesterite based CZTS solar cells SP Ramkumar Molecular Simulations Workshop at New Jersey Institute of Technology, Newark …, 2019 | | 2019 |
| Effect of cation ordering and pressure on n= 2 Ruddlesden-Popper oxides from first principles S Poyyapakkam Ramkumar, E Nowadnick APS March Meeting Abstracts 2019, V04. 003, 2019 | | 2019 |
