• Nikhil Kumar, Pawel Gruszecki, Mateusz Gołębiewski, Jarosław W. Kłos, Maciej Krawczyk "“Exciting high-frequency short-wavelength spin waves using high harmonics of a magnonic cavity mode-Revision,” Advanced Quantum Technologies: 2400015, March 2024
• Nikhil Kumar, Pawel Gruszecki, Mateusz Gołębiewski, Jarosław W. Kłos, Maciej Krawczyk “Exciting high-frequency short-wavelength spin waves using high harmonics of a magnonic cavity mode,” preprint arXiv:2311.14143, 2023
• Nikhil Kumar "Enhanced spin wave coupling between array of spin torque nano oscillators in magnonic crystal cavities," Physica B:Condensed Matter, vol.645, Aug 2022.
• N. Kumar and A. Prabhakar, "Resonant spin wave excitations in a magnonic crystal cavity," in Journal of Magnetism and Magnetic Materials, vol. 450, March 2018.
• D. Kumar, K. Konishi, Nikhil Kumar, S. Miwa, A. Fukushima, K. Yakushiji, S. Yuasa,H. Kubota, C. Tomy, A. Prabhakar, Y. Suzuki and A. Tulapurkar, "Coherent microwave generation by spintronic feedback oscillator," in Scientific Reports, vol.6, Article number: 30747 (2016).
• G. Venkat, N. Kumar and A. Prabhakar, "Micromagnetic and Plane Wave Analysis of an Antidot Magnonic Crystal with a Ring Defect," in IEEE Transactions on Magnetics, vol. 50, no. 11, pp. 1-4, Nov. 2014, Art no. 7101104.
• N. Kumar , G. Venkat and A. Prabhakar, "An Iterative Solution for Spin-Wave Dispersion in a Magnonic Ring," in IEEE Transactions on Magnetics, vol. 50, no. 9, pp. 1-6, Sept. 2014, Art no. 1300306.
• N. Kumar and A. Prabhakar, "Spin Wave Dispersion in Striped Magnonic Waveguide," in IEEE Transactions on Magnetics, vol. 49, no. 3, pp. 1024-1028, March 2013.

• Nikhil Kumar, Paweł Gruszecki, Mateusz Gołębiewski, Jarosław W Kłos, Maciej Krawczyk, "Excitation of high-frequency short-wavelength spin waves", Symposium on Spintronics and Quantum Information 2024, Faculty of Physics, Adam Mickiewicz University, Poznań
• Vishnupriya, Nikhil Kumar, "Design and simulation of an artificial magnetic conductor with quasi-periodic crystal", International Conference on Magnetic Materials and Applications, Hyderabad, Dec 2023.
• Abin Francis, Nikhil Kumar, "Spin Flash Analog to Digital Converter", International Conference on Magnetic Materials and Applications, Hyderabad, Dec 2023.
• Nikhil Kumar, Maciej Krawczyk "Array of magnonic cavities excited by spin torque nano oscillators for enhanced spin wave coupling," Plasmons and vibrational dynamics in nanomaterials, Physics department, Adam Mickiewicz University, Poznan, Poland, Oct 2022
• N. Kumar , A. Prabhakar, "Phase locking, intermittency and chaos, of an array of magnonic crystal cavities driven by spin torque nano oscillators", IEEE International Magnetic Conference, 23 - 4 - 2018.
• A. Prabhakar, N. Kumar, G. Venkat, and M. Malathi, "Magnonic crystals as SWASER cavities", Presented at Magnonics 2017, Magdalen College, University of Oxford, UK.
• G.Venkat, N. Kumar , M. Arnold and A. Prabhakar, "Side band Supression in a Resonant M agnonic Crystal Cavity", presented at 62 nd Annual Conference on Magnetism and Magnetic Materials Pittsburgh, PA Fort Duquesne Blvd, Pittsburgh, PA 15222, 2016, USA.
• D. Kumar , K. Konishi, N. Kumar , S. Miwa, A. Fukushima, K. Yakushiji, S. Yuasa, H. Kubota, C. Tomy, A. Prabhakar, Y. Suzuki, A. Tulapurkar, "Coherent microwave emission from a nanomagnet using magnetic feedback", presented at International conference on Solid State Devices and Material,(SSDM), Tsukuba International Congress Center, Japan, 2016.
• N. Kumar , G. Venkat and A. Prabhakar, "Sustained spinwaves using an antidot magnonic crystal cavity", presented at IEEE AIM Conference, Bornio, Italy, 2016.
• D. Kumar , K. Konishi , N. Kumar , S. Miwa , A. Fukushima, K. Yakushiji , S. Yuasa , H. Kubota, C.V. Tomy , A. Prabhakar , Y. Suzuki and A. Tulapurkar, "Large Quality factor of oscillations in MgO - based magnetic field feedback oscillator", presented at Joint MMM-Intermag Conference, San Diego, California, 2016.
• G. Venkat, N. Kumar , and A. Prabhakar, "Spin wave propagation in an antidot magnonic crystal with a ring defect", presented at Intermag, 2014, Dresden, Germany.
• G. Venkat, N. Kumar , A. Prabhakar,"Spin wave dispersion in permalloy nano-rings", presneted at International conference in Magnonics 2013, Varberg Kurort(Spa), 2013.
• N. Kumar , G. Venkat and A. Prabhakar, "Sustained spinwaves using an antidot magnonic crystal cavity", presented at IEEE AIM Conference, Bornio, Italy, 2016.
• N. Kumar , A. Prabhakar, "Spin wave dispersion in striped magnonic waveguide", presented at IEEE-ICMM 2012, Kaiserslautern, Germany.

I am an Assistant Professor in the Department of Electronics and Communication Engineering at the National Institute of Technology Calicut, India. I received my PhD in 2020 from the Indian Institute of Technology Madras in Electrical Engineering with a thesis title on Magnonic devices with feedback stabilization. My research interests are primarily in magnetic microwave devices, spintronics, spin torque magnonics, spin waves for quantum computing. I am looking for self-motivated Ph.D. students who are interested in pursuing research in microwave spin wave devices, spintronics, spin torque magnonics, spin waves for quantum computing,metamaterials and antenna designs. If you are a prospective student, please contact me at nikhilkumarcs@nitc.ac.in

1. RF generation using spin wave devices

2. Computational electromagnetics(micromagnetics)

3. Microwaves in ultrasmall scale devices

4. Spin wave devices for quantum computing

5. Magnetization dynamics of nanoscale magnetic materials

6. Spintronic based RF components

7. Circuit level modelling of spintronics devices

8. Beyond-CMOS Devices

9. Neuromorphic Spintronics

1. C.S. Nikhil Kumar, Venkat Guru, Prabhakar Anil, "Apparatus for sustaining magnetic oscillations using a magnonic crystal cavity", IN201641008819, 2017. Granted - 2020 - Patent No: 346145. PCT/IN2017/050090

1. C.S.Nikhil Kumar "Magnetic Resonators: Feedback with Magnetic Field and Magnetic Cavity", SpringerBriefs in Applied Sciences and Technology, ISBN: 9789811961755, Springer Nature Singapore, Oct 2022.
2. C.S.Nikhil Kumar "Magnonic Devices: Numerical modelling and Micromagnetic Simulation Approach'', SpringerBriefs in Materials Series, ISBN: ISBN-978303122664-9, Springer Nature Switzerland, Feb 2023.

1. Teaching Assistantship and Recognition Award -July- Dec 2014-IIT Madras
2. Teaching Assistantship and Recognition Award -Jan- July 2015-IIT Madras

http://scholar.google.com/citations?hl=en&user=eV7vOBcAAAAJ