Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Sengupta, Parijat"'
Autor:
Sengupta, Parijat, Bellotti, Enrico
We analytically calculate the anomalous transverse electric and thermal currents in massive and tilted Dirac systems, using $ \beta $-borophene as a representative material, and report on conditions under which the corresponding Lorenz number $\left(
Externí odkaz:
http://arxiv.org/abs/2009.00285
Autor:
Sengupta, Parijat, Rakheja, Shaloo
The photo-excitation of multi-layered potassium doped black phosphorus that exists as a gapped semi-Dirac two-dimensional normal insulator (NI), transforms it into a time-reversal symmetry broken Chern insulator (CI). This transition from an NI to CI
Externí odkaz:
http://arxiv.org/abs/2007.06901
Publikováno v:
Phys. Rev. B 101, 035412 (2020)
We study the interplay of electron and photon spin in non-reciprocal materials. Traditionally, the primary mechanism to design non-reciprocal photonic devices has been magnetic fields in conjunction with magnetic oxides, such as iron garnets. In this
Externí odkaz:
http://arxiv.org/abs/1908.06393
Autor:
Sengupta, Parijat, Rakheja, Shaloo
A caloritronic device setup is proposed that harnesses the intrinsic spin-valley locking of two-dimensional honeycomb lattices with graphene-like valleys, for instance, silicene and stanene. Combining first-principles and analytic calculations, we qu
Externí odkaz:
http://arxiv.org/abs/1905.00984
The generation of thermopower in a miniaturized device modeled as a channel connected to reservoirs/contacts maintained at different temperatures is studied in this work. The left reservoir is also coupled to a periodic THz driving source leading to
Externí odkaz:
http://arxiv.org/abs/1808.01042
We analytically establish an anomalous transverse flow of heat in 8-\textit{Pmmn} borophene, one of the several two-dimensional (2D) allotropes of Boron (B). The dispersion of this allotrope contains a pair of anisotropic and tilted Dirac cones which
Externí odkaz:
http://arxiv.org/abs/1805.12513
Autor:
Sengupta, Parijat, Shi, Junxia
A semi-classical analysis of magneto-thermopower behaviour, namely, the \textit{Seebeck} and \textit{Nernst} effect (NE) in quantum wells of IV-VI lead salts with significant extrinsic Rashba spin-orbit coupling (RSOC) is performed in this report. In
Externí odkaz:
http://arxiv.org/abs/1802.10350
Autor:
Sengupta, Parijat, Shi, Junxia
Publikováno v:
Phys. Rev. Materials 2, 064606 (2018)
The presence of a finite Berry curvature $\left(\Omega\left(k\right)\right)$ leads to anomalous thermal effects. In this letter, we compute the coefficients for the anomalous Nernst effect $\left(ANE\right) $ and its spin analogue, the spin Nernst ef
Externí odkaz:
http://arxiv.org/abs/1801.04516
Autor:
Hu, Chenfei, Sam, Richard, Shan, Mingguang, Nastasa, Viorel, Wang, Minqi, Kim, Taewoo, Gillette, Martha, Sengupta, Parijat, Popescu, Gabriel
Optogenetics has emerged as an exciting tool for manipulating neural activity, which in turn, can modulate behavior in live organisms. However, detecting the response to the optical stimulation requires electrophysiology with physical contact or fluo
Externí odkaz:
http://arxiv.org/abs/1711.02177
Publikováno v:
Journal of Chemical Physics, Vol. 148, Issue 10, pp: 104701 (2018)
We study a thermal gradient induced current $\left(I_{th}\right)$ flow in potassium-doped two-dimensional anisotropic black phosphorus (BP) with semi-Dirac dispersion. The prototype device is a BP channel clamped between two contacts maintained at un
Externí odkaz:
http://arxiv.org/abs/1710.09935