CV

Education

• Ph.D in Physics, Indian Institute of Technology Delhi, 2024.
• M.Sc. in Physics, Indian Institute of Technology Gandhinagar, 2019
• B.Sc.(H) in Physics, DDUC, University of Delhi, 2017

Work experience

• July 2024 - current: Research Associate
  • Howard University
  • Duties includes: Ab initio exploration of topological superconductivity.
  • Supervisor: Prof. Pratibha Dev
• Jan 2020- Jun 2024: Research Fellow
  • Indian Institute of Technology Delhi
  • Duties includes: Performing research on condensed matter, Present results in talks at conferences, Participating in development of manuscripts and reports, Performing teaching assistanship, Writing and defending Phd thesis.
  • Supervisor: Prof. Saswata Bhattacharya
• Aug 2018- Jun 2019: Project fellow
  • Indian Institute of Technology Gandhinagar
  • Project: “Local Hidden Variables and Nonclassicality in System of Spin-1/2 Particles.”
  • Supervisor: Prof. Ravinder R Puri

Skills

• Electronic structure (Density functional, k.p perturbation and tight-binding methods), density functional perturbation theory, many-body perturbation theory, Molecular dyanmics
  • Packages: VASP, Quantum ESPRESSO, Phono3py, Wannier90, WannierTools
  • Languages: Python, Mathematica, C++, Bash Shell Scripting
  • Tools: Jupyter, Materials Studio, Gnuplot, XmGrace, p4vasp, Vesta, VMD, XCrySDen, LaTeX
• Machine Learning and Predictive Modeling
  • Supervised Learning (e.g., regression, classification)
  • Unsupervised Learning (e.g., clustering, dimensionality reduction)
  • Deep Learning (e.g., neural networks, convolutional neural networks)
  • Libraries/Frameworks: Scikit-learn, TensorFlow, PyTorch
• Platforms : Windows, Various Linux distributions

Publications

Multiple Zeeman-type hidden spin splittings in PT-symmetric layered antiferromagnets

Sajjan Sheoran*, Saswata Bhattacharya*. "Multiple Zeeman-type hidden spin splittings in PT-symmetric layered antiferromagnets". Phys. Rev. B (Letter) 109, L020404 (2024).

Nonrelativistic spin splittings and altermagnetism in twisted bilayers of centrosymmetric antiferromagnets

Sajjan Sheoran , Saswata Bhattacharya. "Nonrelativistic spin splittings and altermagnetism in twisted bilayers of centrosymmetric antiferromagnets". Phys. Rev. Mater. (Letter) 8, L051401 (2024).

Strain-driven topological quantum phase transition in the family of halide perovskites

Ankita Phutela*, Sajjan Sheoran, Deepika Gill, Saswata Bhattacharya*. "Strain-driven topological quantum phase transition in the family of halide perovskites". J. Mater. Chem. C 12, 2165 (2024).

Probing the uniaxial strain-dependent valley drift and Berry curvature in monolayer MoSi2N4

Sajjan Sheoran, Manjari Jain, Ruman Moulik, and Saswata Bhattacharya. "Probing the uniaxial strain-dependent valley drift and Berry curvature in monolayer MoSi2N4." Phys. Rev. Mater. 7, 114003 (2023).

Exploring chalcohalide perovskite-inspired materials (Sn2SbX2I3; X = S, Se) for optoelectronic and spintronic Applications

Manish Kumar, Sajjan Sheoran, and Saswata Bhattacharya. "Exploring chalcohalide perovskite-inspired materials (Sn2SbX2I3; X = S, Se) for optoelectronic and spintronic Applications." J. Phys. Chem. Lett. 14, 10158-10165 (2023).

Tailoring defects in SrTiO3 by one step nanoarchitectonics for realizing photocatalytic nitrogen fixation in pure water

A. Kumar, M. Sharma, Sajjan Sheoran, S. Jaiswal, A. Patra, Saswata Bhattacharya, and V. Krishnan. "Tailoring defects in SrTiO3 by one step nanoarchitectonics for realizing photocatalytic nitrogen fixation in pure water." Nanoscale 15(27), 11667-11680 (2023).

Coupled spin-valley, Rashba effect, and hidden spin polarization in WSi2N4 family

Sajjan Sheoran, S. Monga, A. Phutela, and Saswata Bhattacharya. "Coupled spin-valley, Rashba effect, and hidden spin polarization in WSi2N4 family." J. Phys. Chem. Lett. 14(6), 1494-1503 (2023).

Manipulation of valley and spin properties in two-dimensional Janus WSiGeZ4 (Z = N, P, As) through symmetry control

Sajjan Sheoran, A. Phutela, R. Moulik, and Saswata Bhattacharya. "Manipulation of valley and spin properties in two-dimensional Janus WSiGeZ4 (Z = N, P, As) through symmetry control." J. Phys. Chem. C 127(23), 11396-11406 (2023).

Emergence of cubic ordered full-plane persistent spin textures in lead-free materials

Sajjan Sheoran*, P. Bhumla, and Saswata Bhattacharya*. "Emergence of cubic ordered full-plane persistent spin textures in lead-free materials." Phys. Rev. Mater. 6, 094602 (2022).

Rashba spin splitting and anomalous spin textures in the bulk ferroelectric oxide perovskite KIO3

Sajjan Sheoran*, Manish Kumar, Preeti Bhumla, and Saswata Bhattacharya*. "Rashba spin splitting and anomalous spin textures in the bulk ferroelectric oxide perovskite KIO3." Mater. Adv. 3, 4170-4178 (2022).

Vacancy-ordered double perovskites Cs2BI6 (B = Pt, Pd, Te, Sn): An emerging class of thermoelectric materials

Preeti Bhumla*, Manjari Jain, Sajjan Sheoran, and Saswata Bhattacharya*. 'Vacancy-ordered double perovskites Cs2BI6 (B = Pt, Pd, Te, Sn): An emerging class of thermoelectric materials.' J. Phys. Chem. Lett. 13 (50), 11655-11662 (2022).

Origin of Rashba Spin Splitting and Strain Tunability in Ferroelectric Bulk CsPbF3

Preeti Bhumla*, Deepika Gill, Sajjan Sheoran, and Saswata Bhattacharya*. "Origin of Rashba Spin Splitting and Strain Tunability in Ferroelectric Bulk CsPbF3." J. Phys. Chem. Lett. 12(39), 9539-9546 (2021).

Talks

Recent Progress in Graphene and 2D Materials Research (RPGR-2023)

November 20, 2023

Talk at Indian Institute of Science, Bengaluru, India

International Conference on Molecular Simulation (ICMS 2023)

October 06, 2023

Poster presentation at National Taiwan University, Taipei, Taiwan

NAMMA-Psi-k workshop

July 24, 2023

Participation at Indian Institute of Science and Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, India (virtual)

IUMRS-ICA 2022

December 19, 2022

Poster presentation at Indian Institute of Technology Jodhpur, Jodhpur, India

PSI-K Conference 2020

August 22, 2022

Poster Presentation at EPFL, Lausanne, Switzerland

American Physical Society (APS) March Meeting 2022

March 14, 2022

Oral Presentation at American Physical Society, Virtual

Young Investigator Meet on Quantum Condensed Matter Theory (YIMQCMT-2020)

December 15, 2020

Participation at Young Investigator Meet on Quantum Condensed Matter Theory, Virtual

Current Trends in Theoretical Chemistry (CTTC-2020)

September 23, 2020

Talk at Symposium on Current Trends in Theoretical Chemistry, Virtual

Teaching

Teaching Assistant for Physics Laboratory-I

Teaching Assistant for PYL 567 (Atomic and Molecular Spectroscopy)

Teaching Assistant for PYL 101 (Quantum Mechanis and Electrodynamics)

Service and leadership

• Reviewer for reputed scientific journals:
  • Nature Communications
  • Applied Physics Letters
  • Physical Chemistry Chemical Physics
  • Scientific Reports