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8. Moumita Patra, Santanu K. Maiti and Shreekantha Sil : Engineering magneto
resistance: A new perspective, Journal of Physics: Condensed Matter, 31, 355303
(2019).
9. Moumita Dey, Salma Farhana Aman and Santanu K. Maiti : Can a helical molecule
be an efficient functional element to meet the present requirement of thermoelectric
efficiency? Europhysics Letters, 126, 27003 (2019).
10. Moumita Patra and Santanu K. Maiti : Controlled charge and spin current
rectifications in a spin polarized device, Journal of Magnetism and Magnetic
Materials, 484, 408 (2019).
11. Suvendu Chakraborty and Santanu K. Maiti : Possible routes for efficient thermo-
electric energy conversion in a molecular junction, Phys. Chem. 20, 848 (2019).
12. Sudin Ganguly, Saurabh Basu and Santanu K. Maiti : Unconventional charge and
spin dependent transport properties of a graphene nanoribbon with line-disorder,
Europhysics Letters, 124, 57003 (2018).
13. Sudin Ganguly, Saurabh Basu and Santanu K. Maiti : Controlled engineering of spin
polarized transport properties in a zigzag graphene nanojunction, Europhysics Letters,
124, 17005 (2018).
14. Moumita Patra and Santanu K. Maiti : Simultaneous spin-based Boolean logic
operations with re-programmable functionality, Europhysics Letters, 123, 58008
(2018).
15. Moumita Patra and Santanu K. Maiti : All-spin logic operations: Memory device
and Reconfigurable computing, Europhysics Letters, 121, 38004 (2018).
16. Moumita Patra and Santanu K. Maiti : Charge-based re-programmable logic device
with built-in memory: New era in molecular electronics, Organic Electronics, 62, 454
(2018).

Expected date of Completion: December 2021

(S. K. Maiti)

Applied Mathematics

Non-linear Dynamics

Extreme events in dynamical systems: dynamical origin and statistical analysis:

Recent research and reviews attest to the fact rare and recurrent large amplitude deviations of
normally bounded dynamics are seen in many systems. Such occasional large amplitude
spiking events are larger than a nominal value and their statistical distribution of occurrence
shows qualitative similarities, in dynamical sense, with data records of natural disasters, rogue
waves, tsunami, flood, and share market crashes. These observations draw attention of
researchers to investigate similar sudden large intermittent events in dynamical systems for
developing an understanding of the origin of extreme events and exploring the possibilities of
prediction.

We have explored signatures of extreme events like behavior in a laser-based Ikeda map. The
trajectory of the system occasionally travels a large distance away from the bounded chaotic
region, which appears as intermittent spiking events in the temporal dynamics. The large
spiking events satisfy the conditions of extreme events as usually observed in dynamical
systems. The probability density function of the large spiking events shows a long-tail

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