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Patents:
Book chapters:
Popular article:
Journals:(*corresponding author)
Highlights: This article has been "featured" in J of Appl. Phys.
News and Highlights:
"A new ferrimagnetic-type magnetic metamaterial improves energy efficiency"
URL: https://doi.org/10.1063/1.5045477
Our work featured on the cover (Click here) of J. Appl. Phys.
News and Highlights:
"Engineers achieve significant breakthrough in spin wave based information processing technology"
https://scienceadvances.altmetric.com/details/22261920/news
Before joining IIT Hyderabad:
News and Highlights:
APS Research News - Editor’s Choice: “Channeling Spin waves”, Physics 9, 73 (June 30, 2016).
URL: http://physics.aps.org/articles/v9/73
Nature Nanotechnology highlight: This work has been selected for TOC image of Nature Nanotechnology
(May issue). URL: http://www.nature.com/nnano/journal/v11/n5/pdf/toc.pdf
Nature news: “Spintronics: Nanomagnonics around the corner” by D. Grundler.
URL: http://dx.doi.org/10.1038/nnano.2016.16
University news: “NUS reserachers developed energy efficient information processing for spintronic devices”
URL: https://www.ece.nus.edu.sg/home/news.html
- B. Panigrahi, A. Haldar, C. Murapaka, “NiFe/FeMn exchange biased systems for bias-field-free magnetization dynamics”, India Patent Application 202241051146, TEMP/E-1/58726/2022-CHE (Filed Sep 2022).
- B. Paikaray, K. Mahathi, A. Haldar, C. Murapaka, “Reconfigurable logic via gate controlled skyrmion motion”, India Patent Application 202141057701, TEMP/E-1/65140/2021-CHE (Filed Dec 2021).
- B. Paikaray, K. Mahathi, A. Haldar, C. Murapaka, “Skyrmion based majority logic gate in a nanomagnetic device”, India Patent Application 202241010372, Grant No: 435541, Date of patent: 26-June-2023.
- A. Haldar, D. Kumar and A. O. Adeyeye, "Reconfigurable waveguide for spin wave transmission", United States Patent, Patent no.: US10186746B2, Date of patent: Jan 22, 2019. URL: https://patents.google.com/patent/US10186746
- A. Haldar and A. O. Adeyeye, "Nanomagnetic network structures and a method of reconfigurable operation based on magnetization dynamics", United States Patent, Patent no.: US9755652B2, Date of Patent: Sep. 5, 2017. URL: https://patents.google.com/patent/US9755652
Book chapters:
- G. Shimon, A. Haldar, and A. O. Adeyeye,"Magnetization dynamics of reconfigurable 2D magnonic crystals", Book: Spin wave confinement: Propagating spin waves, Second Edition, Pan Stanford Publishing (2017), Edited by Sergej O. Demokritov. URL: http://dx.doi.org/10.1201/9781315110820-5
- A. Barman and A. Haldar, “Time domain study of magnetization dynamics in magnetic thin films, micro- and nanostructures”, Solid State Physics, Volume 65, (2014), Elsevier, Editors: Robert Stamps and Robert Camley. URL: https://doi.org/10.1016/B978-0-12-800175-2.00001-7
Popular article:
- A. Haldar and A. Barman, "A New Drift in Spin-based Electronics", Physics (Viewpoint article) 14, 92 (2021) [URL: https://physics.aps.org/articles/v14/92]
Journals:(*corresponding author)
- M. Kuchibhotla, A. Haldar* and A. O. Adeyeye, "Investigation of magnetization Dynamics in Trilayer Width-modulated Nanowires", J Appl. Phys. 135, 103903 (2024). [URL: doi.org/10.1063/5.0191447]
- S. Sara, C. Murapaka and A. Haldar*, "Voltage-controlled magnetic anisotropy gradient-driven skyrmion-based half-adder and full-adder", Nanoscale (Accepted, 2024) [URL: doi.org/10.1039/D3NR05545K]
- R. Singh, G. K. Maurya, V. Gautam, R. Kumar, M. Kumar, K. G. Suresh, B. Panigrahi, C. Murapaka, A. Haldar and P. Kumar, "Proximity induced band gap opening in topological-magnetic heterostructure (Ni80Fe20/p-TlBiSe2/p-Si) under ambient condition", Sci. Rep. 13, 22290 (2023). [URL: doi.org/10.1038/s41598-023-49004-5]
- K. Sriram, J. Pradhan, M. S. Devapriya, A. Haldar and C. Murapaka, "Annealing dependence on magnetization dynamics and two-magnon scattering in Co40Fe40B20 thin films", Thin Solid Films, 779, 139324 (2023). [URL: doi.org/10.1016/j.tsf.2023.139924]
- Devapriya M S, K. Biswas, C. Murapaka, and A. Haldar*, "Magnetization Dynamics of Domain Walls in Cylindrical Nanowires", Proc. Natl. Acad. Sci., India, Sect. A Phys. Sci. 93, 439 (2023). [URL: doi.org/10.1007/s40010-023-00831-1]
- B. Panigrahi, M. Manivel Raja, Jaivardhan Sinha, C. Murapaka, A. Haldar*, "NiFe/FeMn exchange biased systems for bias-field-free magnetization dynamics", Thin Solid Films 779, 139923 (2023). [URL: doi.org/10.1016/j.tsf.2023.139923]
- M. Kuchibhotla, A. Haldar* and A. O. Adeyeye, “Field angle dependent resonant dynamics of artificial spin ice lattices”, Nanotechnology 34, 325302 (2023). [URL: doi.org/10.1088/1361-6528/acd2e2]
- Krishnanjana P J, B. Paikaray, C. Murapaka and A. Haldar*, "Giant tunability of microwave responses for current-driven skyrmions in a tapered nanostructure with notches", J Phys D: Appl. Phys 56, 335001 (2023). [URL: doi.org/10.1088/1361-6463/acce48]
- B. Panigrahi, M. M. Raja, C. Murapaka, A. Haldar*, “Bias-Field-Free Microwave Operation in NiFe/FeMn Exchange Biased Bilayers by Varying FeMn Thickness”, J Supercond. Nov. Magn. 36, 1075-1083 (2023). [URL: doi.org/10.1007/s10948-023-06545-0]
- B. Paikaray, M. Kuchibhotla, A. Haldar* and C. Murapaka, “Skyrmion based majority logic gate by voltage controlled magnetic anisotropy in a nanomagnetic device”, Nanotechnology 34, 225202 (2023). [URL: doi.org/10.1088/1361-6528/acbeb3]
- S. Singh, A. B. Diraviam, R. Sarkar, A. Haldar*, and M. R. Muthuvel, "Effect of quenching rate on the structural and hard magnetic properties of Nd-Fe-B melt-spun ribbons", AIP Advances 13, 025301 (2023). [URL: https://doi.org/10.1063/9.0000524]
- S. Ragan, B. Paikaray, K. Mahathi, A Haldar, Chandrasekhar Murapaka, A. Acharya, “Skyrmion based 3D Low Complex Runtime Reconfigurable Architecture Design Methodology of Universal Logic Gate”, Nanotechnology 34, 13LT01 (2023). URL: https://doi.org/10.1088/1361-6528/acaf32
- K. Sriram, J. Pala, R. Mondal, B. Paikaray, K. Jain, G. A. Basheed, A. Haldar & Chandrasekhar Murapaka, "Effect of Annealing on Magnetization Reversal and Spin Dynamics in Co40Fe40B20 Thin Films", J. Supercond. Nov. Magn. (2022) [URL: doi.org/10.1007/s10948-022-06442-y, Full manuscript]
- A. Haldar*, “Functional nanostructures for bias-magnet-free and reconfigurable microwave magnetic devices”, Materials Today Electronics 2, 100008 (2022). [URL: doi.org/10.1016/j.mtelec.2022.100008]
- M. Kuchibhotla, A. Talapatra, A. Haldar* and A. O. Adeyeye, “Field orientation dependent magnetization reversal and dynamics in sub-100 nm wide permalloy nanowires”, J. Phys. D: Appl. Phys., 55, 335001, (2022). [URL: https://doi.org/10.1088/1361-6463/ac72cf]
- M. Rahaman, L. A. Longchar, S. K. Sahoo, A. Haldar, M. M. Raja, S.N. Kaul, S. Srinath, “Effect of site disorder on the resonant microwave absorption in Co2Fe0.5Ti0.5Si Heusler alloy thin films”, Journal of Magnetism and Magnetic Materials, 559, 169519 (2022). [URL: https://doi.org/10.1016/j.jmmm.2022.169519]
- B. Paikaray, M. Kuchibhotla, A. Haldar and C. Murapaka, “Reconfigurable logic operations via gate controlled skyrmion motion in a nanomagnetic device", ACS Applied Electronic Materials, 4, 2290 (2022). [URL: https://doi.org/10.1021/acsaelm.2c00122]
- B. Panigrahi, S. K. Sahoo, Syamlal S. k., J. Sinha, H. Basumatary, M. M. Raja and A. Haldar*, "Effect of Ta capping layer on spin dynamics in Co50Fe50 thin films", Solid State Communications 348-349, 114743 (2022). [URL: doi.org/10.1016/j.ssc.2022.114743]
- B. Paikaray, S. K. Sahoo, T. Manoj, K. Sriram, H. Basumatary, A. Haldar*, C. Murapaka, "Large Spin Pumping and Inverse Spin Hall Effect in Ta/Py Bilayer Structures", Phys. Status Solidi A, 219, 2100608 (2022). . [URL: doi.org/10.1002/pssa.202100608]
- A. Chumak et al., "Roadmap on Spin-Wave Computing", IEEE Trans. Magn., 58, 0800172 (2022). [URL: doi.org/10.1109/TMAG.2022.3149664]
- K. Sriram, J. Pala, B. Paikarey, A. Haldar and C. Murapaka, "Effect of seed layer thickness on Ta crystalline phase and spin Hall angle", Nanoscale 13, 19985 (2021) [URL:doi.org/10.1039/D1NR06007D]
- T. Manoj, S. Kotha, B. Paikaray, D. Srideep, A. Haldar, K. V. Rao and C. Murapaka, "Giant spin pumping at ferromagnet (permalloy) - organic semiconductor (perylene diimide) interface", RSC Advances 11, 35567 (2021). [URL:doi.org/10.1039/D1RA07349D]
- K. Begari and A. Haldar*, "Reconfigurable Microwave Properties in Trapezoid-shaped Nanomagnets without Bias Magnetic Field", J Magn. Magn. Mater. 540, 168431 (2021). [URL: doi.org/10.1016/j.jmmm.2021.168431]
- M. Kuchibhotla, A. Talapatra, A. Haldar*, and A. O. Adeyeye, "Magnetization Dynamics of Single and Trilayer Permalloy Nanodots", J. Appl. Phys. 130, 083906 (2021). [URL: doi.org/10.1063/5.0060689]
- A. Haldar* and A. O. Adeyeye, "Perspective: Functional magnetic waveguides for magnonics", Appl. Phys. Lett. 119, 060501 (2021). [URL:doi.org/10.1063/5.0061528]
- B. Paikaray, K. Mahathi, C. Murapaka and A. Haldar*, "Skyrmion Dynamics in Concentric and Eccentric Nano-Ring Structures", IEEE Trans. Magn. 58, 4300406 (2021) [URL: https://doi.org/10.1109/TMAG.2021.3086487]
- B. Paikaray, A. Joseph, C. Murapaka and A. Haldar*, "Tunable microwave properties of a skyrmion in an isolated nanodisk", J Magn. Magn. Mater. 529, 167900 (2021) [URL: https://doi.org/10.1016/j.jmmm.2021.167900].
- A. Haldar* and A. O. Adeyeye, "Perspective: Reconfigurable and self-biased magnonic metamaterial", J. Appl. Phys. 128, 240902 (2020) [URL: https://doi.org/10.1063/5.0033254].
Highlights: This article has been "featured" in J of Appl. Phys.
- K. Begari and A. Haldar*, "Reconfigurable microwave properties of zigzag magnetic nanowires", J. Phys. D: Appl. Phys. 53, 455005 (2020) [URL: https://doi.org/10.1088/1361-6463/aba571].
- A. Haldar* and A. O. Adeyeye, "Microwave assisted gating of spin wave propagation", Appl. Phys. Lett. 116, 162403 (2020). URL: https://doi.org/10.1063/5.0006945
- K. Begari and A. Haldar*, "Reconfigurable microwave properties in C-, L- and S-shaped nanomagnets", J. Phys. D: Appl. Phys. 52, 335003 (2019). URL: https://doi.org/10.1088/1361-6463/ab24a5
- A. Haldar* and A. O. Adeyeye, "Reconfigurable magnetic and microwave properties of a ferrimagnetic-type artificial crystal", J. Appl. Phys. 123, 243901 (2018). URL: https://doi.org/10.1063/1.5032158
News and Highlights:
"A new ferrimagnetic-type magnetic metamaterial improves energy efficiency"
URL: https://doi.org/10.1063/1.5045477
Our work featured on the cover (Click here) of J. Appl. Phys.
- K. Begari and A. Haldar*, "Bias-free giant tunability of microwave properties in multilayer rhomboid nanomagnets", J. Phys. D: Appl. Phys. 51, 275004 (2018).
- A. Haldar, C. Tian and A. O. Adeyeye, "Isotropic transmission of magnon spin information without a magnetic field", Science Advances, 3, e1700638 (2017). URL: http://10.1126/sciadv.1700638
News and Highlights:
"Engineers achieve significant breakthrough in spin wave based information processing technology"
https://scienceadvances.altmetric.com/details/22261920/news
Before joining IIT Hyderabad:
- D. Kumar, P. Lupo, A. Haldar and A. O. Adeyeye, “Unconventional spin distribution in thick Ni80Fe20 nanodisks”, Appl. Phys. Lett. 108, 192404 (2016). URL: http://dx.doi.org/10.1063/1.4948972
- A. Haldar and A. O. Adeyeye, “Bias field free tunability of microwave properties based on geometrically controlled Permalloy nanomagnets,” Appl. Phys. Lett. 108, 162401 (2016). URL: http://dx.doi.org/10.1063/1.4947092
- A. Haldar, D. Kumar, and A. O. Adeyeye, “A reconfigurable waveguide for energy-efficient transmission and local manipulation of information in a nanomagnetic device,” Nature Nanotechnology, 11, 437-443 (2016). URL: http://dx.doi.org/10.1038/nnano.2015.332
News and Highlights:
APS Research News - Editor’s Choice: “Channeling Spin waves”, Physics 9, 73 (June 30, 2016).
URL: http://physics.aps.org/articles/v9/73
Nature Nanotechnology highlight: This work has been selected for TOC image of Nature Nanotechnology
(May issue). URL: http://www.nature.com/nnano/journal/v11/n5/pdf/toc.pdf
Nature news: “Spintronics: Nanomagnonics around the corner” by D. Grundler.
URL: http://dx.doi.org/10.1038/nnano.2016.16
University news: “NUS reserachers developed energy efficient information processing for spintronic devices”
URL: https://www.ece.nus.edu.sg/home/news.html
- A. Haldar and A. O. Adeyeye, “Determinstic control of magnetization dynamics in reconfigurable nanomagnetic networks for logic applications,” ACS Nano 10, 1690-1698 (2016). URL: http://dx.doi.org/10.1021/acsnano.5b07849
- A. Haldar and A. O. Adeyeye, “Artificial metamaterials for reprgrammble magnetic and microwave properties,” Appl. Phys. Lett. 108, 022405 (2016). URL: http://dx.doi.org/10.1063/1.4939852
- G. Riley, H. J. Liu, M. Asmat-Uceda, A. Haldar, and K. S. Buchanan, “Observation of the dynamic modes of a magnetic antivortex using Brillouin light scattering”, Phys. Rev. B 92, 064423 (2015). URL: http://dx.doi.org/10.1103/PhysRevB.92.064423
- M. Asmat-Uceda, Lin Li, A. Haldar, B. Shaw and Kristen S. Buchanan, “Geometry and field dependence of the formation magnetic antivortices in pound-key-like structures”, J. Appl. Phys. 117, 173902 (2015). URL: http://dx.doi.org/10.1063/1.4919598
- A. Haldar and A. O. Adeyeye, “Vortex chirality control in circular disks using dipole-coupled nanomagnets”, Appl. Phys. Lett. 106, 032404 (2015).
- A. Ganguly, R. Robinson, A. Haldar, J. Sinha, A. T. Hindmarch, D. A. Atkinson, A. Barman, “Time domain detection of modulation of damping and spin Hall angle in Pt/Ni81Fe19 bilayer film.” Appl. Phys. Lett. 105, 112409 (2014).
- Yu.V. Knyazev, A.V. Lukoyanov, Yu.I. Kuzmin, A. Haldar and K. G. Suresh, “Role of Fe and Co in optical conductivity and electronic structure of TbNi4Fe and TbNi4Co.” Optics and Spectroscopy, 117, 414 (2014).
- A. Haldar, C. Banerjee, P. Laha, and Anjan barman, “Brillouin light scattering study of spin waves in NiFe/Co exchange spring bilayer films”, J. Appl. Phys. 115, 133901 (2014).
- A. Haldar and Kristen S. Bucahanan, “Magnetic antivortex formation in pound-key-like nanostrctures”, Appl. Phys. Lett. 102, 112401 (2013).
- A. Haldar, A. Das, A. Hoser, T. Hofmann, A. K. Nayak, K. G. Suresh and A. K. Nigam. “High field neutron diffraction studies in Ce(Fe0.95Si0.05)2 compound.” J. of Appl. Phys. 109, 07E125 (2011).
- V. Lukoyanov, A. Haldar, A. Das, A. K. Nayak, K. G. Suresh and A. K. Nigam. “Magnetic properties and exchange interactions of TbNi5-xMx (M=Co & Fe) compounds: ab initio calculations. ” J. of Appl. Phys. 109, 07E152 (2011).
- A. Haldar, I. Dhiman, A. Das, K. G. Suresh and A. K. Nigam. “Magnetic, magnetocaloric and neutron diffraction studies in TbNi5-xMx (M=Co & Fe) compounds.” J. of Alloys and Compounds 509, 3760-3765 (2011).
- A. Haldar, K. G. Suresh and A. K. Nigam. “Observation of re-entrant spin glass behavior in Er doped CeFe2 compound.” Europhys. Lett. 91, 67006 (2010).
- A. Haldar, N. K. Singh, Ya. Mudryk, K. G. Suresh, A. K. Nigam, and V. K. Pecharsky. “Temperature and magnetic field induced structural transformation in Si doped CeFe2: An in-field X-ray diffraction study.” Solid State Commun. 150, 879-883 (2010).
- A. Haldar, N. K. Singh, Ya. Mudryk, K. G. Suresh, A. K. Nigam, and V. K. Pecharsky. “Magnetostructural transition in Ce(Fe0.975Ga0.025)2 compound.” J. of Appl. Phys. 107, 09E133 (2010).
- A. Haldar, K. G. Suresh and A. K. Nigam, “Magnetization jumps and relaxation in doped CeFe2.” J. of Phys.: Conf. Series 200, 032021 (2010).
- A. Haldar, K. G. Suresh and A. K. Nigam. “Martensitic features in Si doped CeFe2 revealed by magnetization and transport study.” Intermetallics 18, 1772-1778 (2010).
- A. Haldar, K. G. Suresh, A. K. Nigam. “Magnetic and the magnetocaloric properties in Ce1-xRxFe2 and Ce(Fe1-xMx)2 compounds.” J. Phys. D: Appl. Phys. 43, 285004 (2010).
- A. Haldar, K. G. Suresh, A. K. Nigam. “Magnetization jumps and transport properties of R6Co1.67Si3 (R=Tb & Nd) ternary alloys.” Physica B 405, 3446–3451 (2010).
- P. Kumar, Niraj K. Singh, A. K. Nayak, A. Haldar, K. G. Suresh and A. K. Nigam “Large reversible magnetocaloric effect in Er3Co compound.” J. of Appl. Phys. 107, 09A932 (2010).
- A. Haldar, K. G. Suresh, A. K. Nigam, A. A. Coelho and S. Gama. “Stabilization of antiferromagnetism in CeFe2 alloys: Effects of chemical and hydrostatic pressure.” J. Phys.: Condens. Matter 21, 496003 (2009).
- A. Haldar, K. G. Suresh and A. K. Nigam. “Magnetism in gallium doped CeFe2 : Martensitic scenario.” Phys. Rev. B 78, 144429 (2008).