Dr. Jaivardhan Sinha
Academic Title
Research Assistant Professor
& Ramanujan Fellow (DST-SERB)
Education
M.Sc-Ph.D. Dual degree 2003-2010
Indian Institute of Technology, Kanpur, Uttar Pradesh, India.
Ph.D. Thesis title: Properties of Magnetic Materials Under Extreme Conditions
Master of Science Project title: Scanning Tunneling Microscope Study of Transition Metal Compounds
Bachelor of Science (Honors) Physics 2000 – 2003
Banaras Hindu University (BHU), Uttar Pradesh, India.
Time at SRM
Since April 2018: Research Assistant Professor in the Department of Nanotechnology, SRM Institute of Science and Technology
Professional Experience
Research Assistant Professor and Ramanujan Fellow April 2018-Onward
Department of Nanotechnology
SRM Institute of Science and Technology, Chennai
Ramanujan Fellow May 2017-March 2018
S. N. Bose National Centre for Basic Sciences, Kolkata, India
Scientist D Nov 2014 – Apr 2017
(Equivalent to Assistant Professor)
Thematic Unit of Excellence on Nanodevice Technology,
S. N. Bose National Centre for Basic Sciences, Kolkata, India
Post-doctoral Research Associate May 2014-Oct 2014
S. N. Bose National Centre for Basic Sciences, Kolkata, India.
Post-doctoral Research Fellow Oct 2010 –Mar 2014
National Institute for Materials Science, Tsukuba, Japan.
Current Research
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Optical and Electrical Investigation of Magnetization Dynamics
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Development of Ultrathin films and Multilayers for Application in Magnetic Recording Industry, Micro-nano-fabrication
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Magneto-optical Microscopy
Research Summary
Dr. Jaivardhan Sinha’s current research interest is in the field of spintronics and nanomagnetism with a particular attention on investigating spin dynamics in ferromagnetic thin film heterostructures. For these studies, ultra high vacuum sputter deposition technique has been used to develop thin film heterostructures and micro-nano-fabrication in clean room for various devices fabrication. Brillouin light scattering (BLS) and time resolved magneto-optical Kerr effect (TRMOKE) have been dedicatedly used for optical investigation of magnetization dynamics. Furthermore, high frequency probe-station and various magnetometers have been used to thoroughly characterize the samples and obtain in-depth insight into the fundamental physics.
Highlights of Research
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In-depth investigation of spin orbit coupling induced effects, particularly, interfacial Dzyaloshinskii-Moriya interaction and spin Hall effect in ferromagnetic thin film heterostructures
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Development of perpendicularly magnetized ferromagnetic thin film heterostructures and nanofabrication of magnonic crystal
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Microwave emission from Heusler alloy based spin torque nano-oscillators
Key Publications
1. Avinash K Chaurasiya, Samiran Choudhury, Jaivardhan Sinha and Anjan Barman, Dependence of interfacial Dezyaloshinskii-Moriya interaction on layer thicknesses on Ta/Co-Fe-B/TaOx heterostructures from Brillouin light scattering. Phys. Rev. Appl. 9, 014008 (2018). Impact Factor: 4.8, Citation: 0
2. Avinash K Chaurasiya, Chandrima Banerjee, Santanu Pan, Saurav Sahoo, Samiran Choudhury, Jaivardhan Sinha* and Anjan Barman*, Direct Observation of Interfacial Dzyaloshinskii-Moriya Interaction from Asymmetric Spin-wave Propagation in W/CoFeB/SiO2 Heterostructures Down to Sub-nanometer CoFeB Thickness, Scientific Reports 6, 32592 (2016). Impact Factor: 4.25, Citation: 10
3. Jaivardhan Sinha, Masamitsu Hayashi, Andrew J. Kellock, Shunsuke Fukami, Michihiko Yamanouchi, Hideo Sato, Shoji Ikeda, Seiji Mitani, See-hun Yang, Stuart S. P. Parkin and Hideo Ohno, Enhanced interface perpendicular magnetic anisotropy in Ta|CoFeB|MgO using nitrogen doped Ta underlayers, Appl. Phys. Lett. 102, 242405 (2013). Impact factor: 3.41, Citation: 72
4. Junyeon Kim, Jaivardhan Sinha, Masamitsu Hayashi, Michihiko Yamanouchi, Shunsuke Fukami, Tetsuhiro Suzuki, Seiji Mitani and Hideo Ohno, Layer thickness dependence of the current induced effective field vector in Ta|CoFeB|MgO, Nature Materials, 12, 240 (2013). Impact factor: 39.73, Citation: 394
5. Jaivardhan Sinha, Shyam Mohan, S. S. Banerjee, Subhendu Kahaly and G. Ravindra Kumar, Mapping giant magnetic fields around dense solid plasmas by high-resolution magneto-optical microscopy. Phys. Rev. E, 77, 046118 (2008). Impact factor: 2.36, Citation: 7.
Patents:
1. Systems and methods for imaging characteristics of a sample and for identifying regions of damage in the sample, Inventor(s): Satyajit Banerjee, Shyam Mohan, Jaivardhan Sinha
Patent No. US9778202B2, Grant date: October 3rd, 2017
Patent Assignee: Indian Institute of Technology Kanpur, India
2. Perpendicularly Magnetized Ultrathin Film Exhibiting High Perpendicular Magnetic Anisotropy, Method for Manufacturing Same, And Application, Inventor(s): Masamitsu Hayashi, Jaivardhan Sinha, Masaya Kodzuka, Tomoya Nakatani , Yukiko Takahashi , Takao Furubayashi , Seiji Mitani , Kazuhiro Hono.
Patent No. JP 2014-506289, US9508373 B2, Grant date: November 29th, 2016
Patent Assignee: National Institute for Materials Science, Tsukuba, Japan
3. Co2Fe based Heusler alloy and Spintronics devices using the same, Inventor(s): Yukiko Takahashi; A. Srinivasan, B. Varaprasad, Ammanabrolu R, Jaivardhan Sinha, Masamitsu Hayashi, Takao Furubayashi, S. Kasai, S. Hirayama, S. Mitani, K. Hono.
Patent Number: WO2012093587-A1; JP2012156485-A; US2013302649-A1; 5696990- B2, Grant date: May 10th, 2016
Patent Assignee: National Institute for Materials Science, Tsukuba, Japan