Vineeth Mohanan Parakkat

@cusat.ac.in

Assistant Professor at Department of Physics
Cochin University of Science and Technology

Vineeth Mohanan Parakkat


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https://researchid.co/vineethmp
His research interests include
• Magnetic thin films, magnetic data storage
• Spintronics: Electrical control of magnetism
• Magnetic metamaterials: Emergent physics in nanomagnetic arrays
• Micromagnetic simulations.

EDUCATION

Dr. Vineeth Mohanan P joined the department of Physics, CUSAT, as Assistant Professor in June 2021. He was working as a postdoctoral scholar at the University of Washington, Seattle, before joining CUSAT. He completed integrated Ph.D. program from the Indian Institute of Science, Bangalore, during 2007-2017. He received a bachelor’s degree in Physics from Kannur University in 2007.

RESEARCH, TEACHING, or OTHER INTERESTS

Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Materials Science, Surfaces, Coatings and Films
13

Scopus Publications

147

Scholar Citations

6

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • Direct integration of SnO2/PANI on carbon cloth for high-capacity, binder-free anodes with enhanced cycling stability in lithium-ion cells
    Neethu Simon, E. M. Sreeja, S. Jayalekshmi, Vineeth Mohanan Parakkat
    Journal of Materials Science Materials in Electronics, 2026
  • Fabrication of Hybrid Artificial Spin Ice Arrays with Periodic Site-Specific Local Magnetic Fields
    Vineeth Mohanan Parakkat, Kannan M. Krishnan
    Solid State Nanomagnetism Volume 2, 2026
    We describe the microfabrication and magnetic behavior of a composite/hybrid, two-dimensional, magnetostatically interacting array of nanomagnets of Fe and exchange-biased bilayer Fe/IrMn heterostructures. Such an interacting array of nanomagnets, forming an artificial spin ice lattice but with a hybrid structure, has not been demonstrated before. These devices are fabricated of epitaxially grown Fe/IrMn thin films by a two-stage electron beam lithography process involving metal mask transfer and controlled ion milling. Following the epitaxial deposition of Fe/IrMn bilayer films, the first step involves electron beam lithography fabrication of nanomagnet arrays, followed by selective removal of exchange-bias by etching away IrMn layer at specific nanomagnet elements by ion milling. The technique described provides a way to apply a site-specific magnetic field at the nanometer length scale, utilizing the phenomenon of exchange-bias, as demonstrated here for an array with local fields applied at twice the period of the artificial spin ice lattice. This technology can also be readily extended to different spintronic devices requiring spatial distribution of exchange-bias fields.
  • Tunable Ground State in Heterostructured Artificial Spin Ice with Exchange Bias
    Vineeth Mohanan Parakkat, Kaichen Xie, Kannan M. Krishnan
    Solid State Nanomagnetism Volume 2, 2026
    We describe an artificial spin ice (ASI) composed of exchange biased heterostructured nanomagnetic elements with unidirectional anisotropy and compare it with a conventional ASI constituted by ferromagnets with uniaxial anisotropy (Ising spins). The introduction of a local exchange bias field, aligned along one of the sublattices of the square ASI, lifts the spin-reversal symmetry of the vertices. By varying the lattice constant of the square array, we control the ratio of exchange bias (EB) to dipolar field (H EB /H dip) and tune the ground state from an antiferromagnetic to a ferromagnetic configuration with an effective magnetic moment. The geometric frustration of dipolar interactions is moderated by a nonfrustrated local field, leading to a mesoscopic system with specific metastable states observed during the demagnetization process.
  • 2D Materials for Developing Bendable Li-Ion Cells for Next-Generation Flexible Energy Storage Devices
    Neethu Simon, E.M. Sreeja, Vineeth Mohanan Parakkat, S. Jayalekshmi
    Unravelling the Power of 2d Materials Revolutionizing Flexible Devices, 2026
    Among various energy storage systems, rechargeable lithium-ion batteries (LIBs) constitute the most promising power sources to handle the adverse effects of the energy crisis. Present-day LIBs still lack features like flexibility, bendability, and wearability, which hinder the development of next-generation flexible energy storage devices. In flexible rechargeable cells, all components, including cathode, anode, electrolyte, separator, and packing material, need to be flexible and bendable. The main objective of current research on flexible Li-ion cells is to maintain the expected cell stability under various bending states. Significant efforts are being made globally to design and fabricate highly flexible rechargeable LIBs. One of the most promising strategies to meet the challenges of fabricating highly stable, flexible Li-ion cells, using two-dimensional (2D) materials, is to develop flexible anode and cathode materials without compromising the cell capacity, energy density, and cycling stability. In this chapter, the focus is on advances in developing typical 2D functional materials for flexible/bendable Li-ion cells, such as graphene-based and 2D inorganic nanosheet-based composite anodes and cathodes. Understanding the selection, design, and optimization of these bendable and free-standing electrodes should serve as key factors for next-generation flexible Li-ion cell chemistry. The main challenges and perspectives in the design and manufacture of flexible electrodes for Li-ion cells, maintaining the required capacity, cell voltage, rate capability, and cycling stability, are also discussed in detail.
  • Configurable Artificial Spin Ice with Site-Specific Local Magnetic Fields
    Vineeth Mohanan Parakkat, Gavin M. Macauley, Robert L. Stamps, Kannan M. Krishnan
    Solid State Nanomagnetism Volume 2, 2026
    We demonstrate ground state tunability for a hybrid artificial spin ice composed of Fe nanomagnets which are subject to site-specific exchange-bias fields, applied in integer multiples of the lattice along one sublattice of the classic square artificial spin ice. By varying this period, three distinct magnetic textures are identified: a striped ferromagnetic phase; an antiferromagnetic phase attainable through an external field protocol alone; and an unconventional ground state with magnetically charged pairs embedded in an antiferromagnetic matrix. Monte Carlo simulations support the results of field protocols and demonstrate that the pinning tunes relaxation timescales and their critical behavior.
  • Enhanced Electrochemical Performance of Hydrothermally Synthesized SnO2 Anodes for Li-ion Batteries Using PVP with Varied Molecular Weights
    Neethu Simon, S. Jayalekshmi, Vineeth Mohanan Parakkat
    Springer Proceedings in Physics, 2025
  • All Solid-State Li-S Cells with PEO/PVP Based Solid Polymer Electrolyte
    Sreeja Ezhumayil Muraleedharan, Neethu Simon, Vineeth Mohanan Parakkat, S. Jayalekshmi
    Springer Proceedings in Physics, 2025
  • Configurable Artificial Spin Ice with Site-Specific Local Magnetic Fields
    Vineeth Mohanan Parakkat, Gavin M. Macauley, Robert L. Stamps, Kannan M. Krishnan
    Physical Review Letters, 2021
    We demonstrate ground state tunability for a hybrid artificial spin ice composed of Fe nanomagnets which are subject to site-specific exchange-bias fields, applied in integer multiples of the lattice along one sublattice of the classic square artificial spin ice. By varying this period, three distinct magnetic textures are identified: a striped ferromagnetic phase; an antiferromagnetic phase attainable through an external field protocol alone; and an unconventional ground state with magnetically charged pairs embedded in an antiferromagnetic matrix. Monte Carlo simulations support the results of field protocols and demonstrate that the pinning tunes relaxation timescales and their critical behavior.
  • Fabrication of hybrid artificial spin ice arrays with periodic site-specific local magnetic fields
    Vineeth Mohanan Parakkat, Kannan M Krishnan
    Journal of Micromechanics and Microengineering, 2020
    We describe the microfabrication and magnetic behavior of a composite/hybrid, two-dimensional, magnetostatically interacting array of nanomagnets of Fe and exchange-biased bilayer Fe/IrMn heterostructures. Such an interacting array of nanomagnets, forming an artificial spin ice lattice but with a hybrid structure, has not been demonstrated before. These devices are fabricated of epitaxially grown Fe/IrMn thin films by a two-stage electron beam lithography process involving metal mask transfer and controlled ion milling. Following the epitaxial deposition of Fe/IrMn bilayer films, the first step involves electron beam lithography fabrication of nanomagnet arrays, followed by selective removal of exchange-bias by etching away IrMn layer at specific nanomagnet elements by ion milling. The technique described provides a way to apply a site-specific magnetic field at the nanometer length scale, utilizing the phenomenon of exchange-bias, as demonstrated here for an array with local fields applied at twice the period of the artificial spin ice lattice. This technology can also be readily extended to different spintronic devices requiring spatial distribution of exchange-bias fields.
  • Tunable ground state in heterostructured artificial spin ice with exchange bias
    Vineeth Mohanan Parakkat, Kaichen Xie, Kannan M. Krishnan
    Physical Review B, 2019
    We describe an artificial spin ice (ASI) composed of exchange biased heterostructured nanomagnetic elements with unidirectional anisotropy and compare it with a conventional ASI constituted by ferromagnets with uniaxial anisotropy (Ising spins). The introduction of a local exchange bias field, aligned along one of the sublattices of the square ASI, lifts the spin-reversal symmetry of the vertices. By varying the lattice constant of the square array, we control the ratio of exchange bias (EB) to dipolar field (${H}_{\\mathrm{EB}}/{H}_{\\mathrm{dip}}$) and tune the ground state from an antiferromagnetic to a ferromagnetic configuration with an effective magnetic moment. The geometric frustration of dipolar interactions is moderated by a nonfrustrated local field, leading to a mesoscopic system with specific metastable states observed during the demagnetization process.
  • Copper dusting effects on perpendicular magnetic anisotropy in Pt/Co/Pt tri-layers
    Vineeth Mohanan Parakkat, K. R. Ganesh, P. S. Anil Kumar
    Aip Advances, 2016
  • Tailoring Curie temperature and magnetic anisotropy in ultrathin Pt/Co/Pt films
    Vineeth Mohanan Parakkat, K. R. Ganesh, P. S. Anil Kumar
    Aip Advances, 2016
  • Investigation of magnon assisted resistivity in permalloy thin films
    Vineeth Mohanan Parakkat, P. S. Anil Kumar
    Aip Conference Proceedings, 2013

RECENT SCHOLAR PUBLICATIONS

  • Direct integration of SnO 2 /PANI on carbon cloth for high-capacity, binder-free anodes with enhanced cycling stability in lithium-ion cells
    N Simon, EM Sreeja, S Jayalekshmi, VM Parakkat
    Journal of Materials Science: Materials in Electronics 37 (14), 1047 , 2026
    2026
  • 2D Materials for Developing Bendable Li-Ion Cells for Next-Generation Flexible Energy Storage Devices
    N Simon, EM Sreeja, VM Parakkat, S Jayalekshmi
    Unravelling the Power of 2D Materials, 233-248 , 2026
    2026
  • High-Performance Metal-doped TiO2-based Electrodes for Supercapacitors Synthesised via a Novel Water-Bath Temperature-Controlled Approach
    A Ajith, RR Philip, S Shaji, N Simon, EM Sreeja, PV Mohanan, ...
    Journal of Physics and Chemistry of Solids, 113425 , 2025
    2025
    Citations: 1
  • Enhanced Electrochemical Performance of Hydrothermally Synthesized SnO 2 Anodes for Li-ion Batteries Using PVP with Varied Molecular Weights
    N Simon, S Jayalekshmi, VM Parakkat
    International Conference on Optoelectronic and Nanomaterials for Advanced … , 2025
    2025
  • All Solid-State Li-S Cells with PEO/PVP Based Solid Polymer Electrolyte
    S Ezhumayil Muraleedharan, N Simon, VM Parakkat, S Jayalekshmi
    International Conference on Optoelectronic and Nanomaterials for Advanced … , 2025
    2025
  • Artificial Spin Ice in Exchange-biased Systems
    K Krishnan, V Parakkat, R Stamps, G MacAuley
    APS March Meeting Abstracts 2022, Y45. 003 , 2022
    2022
  • Configurable Artificial Spin Ice with Site-Specific Local Magnetic Fields
    VM Parakkat, GM Macauley, RL Stamps, KM Krishnan
    Phys. Rev. Lett. 126 (1), 017203 , 2021
    2021
    Citations: 19
  • Fabrication of hybrid artificial spin ice arrays with periodic site-specific local magnetic fields
    VM Parakkat, KM Krishnan
    Journal of Micromechanics and Microengineering 30 (9), 095002 , 2020
    2020
    Citations: 2
  • Tunable ground state in heterostructured artificial spin ice with exchange bias
    VM Parakkat, K Xie, KM Krishnan
    Phys. Rev. B 99, 054429 , 2019
    2019
    Citations: 17
  • Control of vortex state in cobalt nanorings with domain wall pinning centers
    M Lal, S Sakshath, V Mohanan Parakkat, PS Anil Kumar
    AIP Advances 8 (5) , 2018
    2018
    Citations: 3
  • Spin Hall effect mediated current-induced deterministic switching in all-metallic perpendicularly magnetized Pt/Co/Pt trilayers
    V Mohanan, KR Ganesh, PSA Kumar
    Phy. Rev. B 96, 104412 , 2017
    2017
    Citations: 50
  • Chirality dependent pinning and depinning of magnetic vortex domain walls at nano-constrictions
    V Mohanan, PSA Kumar
    Journal of Magnetism and Magnetic Materials 422, 419-424 , 2017
    2017
    Citations: 12
  • Copper dusting effects on perpendicular magnetic anisotropy in Pt/Co/Pt tri-layers
    VM Parakkat, KR Ganesh, PS Anil Kumar
    AIP advances 6 (5) , 2016
    2016
    Citations: 12
  • Tailoring Curie temperature and magnetic anisotropy in ultrathin Pt/Co/Pt films
    VM Parakkat, KR Ganesh, PS Anil Kumar
    AIP Advances 6 (5) , 2016
    2016
    Citations: 28
  • Investigation of magnon assisted resistivity in permalloy thin films
    VM Parakkat, PS Anil Kumar
    AIP Conference Proceedings 1536 (1), 1185-1186 , 2013
    2013
  • Understanding the magnetization reversal in six-fold anisotropic hexagonal networks
    D Venkateswarlu, PV Mohanan, RS Joshi, PSA Kumar
    IEEE transactions on magnetics 48 (11), 2793-2796 , 2012
    2012
    Citations: 3

MOST CITED SCHOLAR PUBLICATIONS

  • Spin Hall effect mediated current-induced deterministic switching in all-metallic perpendicularly magnetized Pt/Co/Pt trilayers
    V Mohanan, KR Ganesh, PSA Kumar
    Phy. Rev. B 96, 104412 , 2017
    2017
    Citations: 50
  • Tailoring Curie temperature and magnetic anisotropy in ultrathin Pt/Co/Pt films
    VM Parakkat, KR Ganesh, PS Anil Kumar
    AIP Advances 6 (5) , 2016
    2016
    Citations: 28
  • Configurable Artificial Spin Ice with Site-Specific Local Magnetic Fields
    VM Parakkat, GM Macauley, RL Stamps, KM Krishnan
    Phys. Rev. Lett. 126 (1), 017203 , 2021
    2021
    Citations: 19
  • Tunable ground state in heterostructured artificial spin ice with exchange bias
    VM Parakkat, K Xie, KM Krishnan
    Phys. Rev. B 99, 054429 , 2019
    2019
    Citations: 17
  • Chirality dependent pinning and depinning of magnetic vortex domain walls at nano-constrictions
    V Mohanan, PSA Kumar
    Journal of Magnetism and Magnetic Materials 422, 419-424 , 2017
    2017
    Citations: 12
  • Copper dusting effects on perpendicular magnetic anisotropy in Pt/Co/Pt tri-layers
    VM Parakkat, KR Ganesh, PS Anil Kumar
    AIP advances 6 (5) , 2016
    2016
    Citations: 12
  • Control of vortex state in cobalt nanorings with domain wall pinning centers
    M Lal, S Sakshath, V Mohanan Parakkat, PS Anil Kumar
    AIP Advances 8 (5) , 2018
    2018
    Citations: 3
  • Understanding the magnetization reversal in six-fold anisotropic hexagonal networks
    D Venkateswarlu, PV Mohanan, RS Joshi, PSA Kumar
    IEEE transactions on magnetics 48 (11), 2793-2796 , 2012
    2012
    Citations: 3
  • Fabrication of hybrid artificial spin ice arrays with periodic site-specific local magnetic fields
    VM Parakkat, KM Krishnan
    Journal of Micromechanics and Microengineering 30 (9), 095002 , 2020
    2020
    Citations: 2
  • High-Performance Metal-doped TiO2-based Electrodes for Supercapacitors Synthesised via a Novel Water-Bath Temperature-Controlled Approach
    A Ajith, RR Philip, S Shaji, N Simon, EM Sreeja, PV Mohanan, ...
    Journal of Physics and Chemistry of Solids, 113425 , 2025
    2025
    Citations: 1
  • Direct integration of SnO 2 /PANI on carbon cloth for high-capacity, binder-free anodes with enhanced cycling stability in lithium-ion cells
    N Simon, EM Sreeja, S Jayalekshmi, VM Parakkat
    Journal of Materials Science: Materials in Electronics 37 (14), 1047 , 2026
    2026
  • 2D Materials for Developing Bendable Li-Ion Cells for Next-Generation Flexible Energy Storage Devices
    N Simon, EM Sreeja, VM Parakkat, S Jayalekshmi
    Unravelling the Power of 2D Materials, 233-248 , 2026
    2026
  • Enhanced Electrochemical Performance of Hydrothermally Synthesized SnO 2 Anodes for Li-ion Batteries Using PVP with Varied Molecular Weights
    N Simon, S Jayalekshmi, VM Parakkat
    International Conference on Optoelectronic and Nanomaterials for Advanced … , 2025
    2025
  • All Solid-State Li-S Cells with PEO/PVP Based Solid Polymer Electrolyte
    S Ezhumayil Muraleedharan, N Simon, VM Parakkat, S Jayalekshmi
    International Conference on Optoelectronic and Nanomaterials for Advanced … , 2025
    2025
  • Artificial Spin Ice in Exchange-biased Systems
    K Krishnan, V Parakkat, R Stamps, G MacAuley
    APS March Meeting Abstracts 2022, Y45. 003 , 2022
    2022
  • Investigation of magnon assisted resistivity in permalloy thin films
    VM Parakkat, PS Anil Kumar
    AIP Conference Proceedings 1536 (1), 1185-1186 , 2013
    2013