Zobrazeno 1 - 10
of 354
pro vyhledávání: '"Kumar, Siddharth"'
Autor:
Kumar, Siddharth Krishna
This paper critically examines the fundamental distinctions between gradient methods applied to non-differentiable functions (NGDMs) and classical gradient descents (GDs) for differentiable functions, revealing significant gaps in current deep learni
Externí odkaz:
http://arxiv.org/abs/2401.08426
This work presents the magnetic field geometry in a complex of three cometary (with head-tail morphology) globules, namely LDN 323, LDN 328, and LDN 331, using R-band polarization measurements of background stars. These observations were combined wit
Externí odkaz:
http://arxiv.org/abs/2306.11445
Autor:
Mandal, Prithwijit, Ojha, Shashank Kumar, Wang, Duo, Patel, Ranjan Kumar, Kumar, Siddharth, Maity, Jyotirmay, Zhang, Zhan, Zhou, Hua, Klewe, Christoph, Shafer, Padraic, Sanyal, Biplab, Middey, Srimanta
The orbital, which represents the shape of the electron cloud, very often strongly influences the manifestation of various exotic phenomena, e.g., magnetism, metal-insulator transition, colossal magnetoresistance, unconventional superconductivity etc
Externí odkaz:
http://arxiv.org/abs/2306.08919
Autor:
Ojha, Shashank Kumar, Mandal, Prithwijit, Kumar, Siddharth, Maity, Jyotirmay, Middey, Srimanta
Publikováno v:
Communications Physics 6, 126 (2023)
The nature of energy dissipation in 2D superconductors under perpendicular magnetic field at small current excitations has been extensively studied over the past two decades. However, dissipation mechanisms at high current drives remain largely unexp
Externí odkaz:
http://arxiv.org/abs/2206.10361
Autor:
Patel, Ranjan Kumar, Patra, Krishnendu, Ojha, Shashank Kumar, Kumar, Siddharth, Sarkar, Sagar, Freeland, J. W., Kim, J. W., Ryan, P. J., Mahadevan, Priya, Middey, S.
$RE$NiO$_3$ is a negative charge transfer energy system and exhibits a temperature-driven metal-insulator transition (MIT), which is also accompanied by a bond disproportionation (BD) transition. In order to explore how hole doping affects the BD tra
Externí odkaz:
http://arxiv.org/abs/2202.13366
Autor:
Kumar, Siddharth, Ojha, Shashank Kumar, Patel, Ranjan Kumar, Mandal, Prithwijit, Bhattacharya, Nandana, Middey, S.
Publikováno v:
Appl. Phys. Lett. 120, 061602 (2022)
Contradictory reports about the electronic and magnetic behavior of bulk Nd0:5Ba0:5MnO3 with uniform disorder exist in the literature. In this work, we investigate the thin films of Nd0:5Ba0:5MnO3, grown by pulsed laser deposition. The success of epi
Externí odkaz:
http://arxiv.org/abs/2202.12030
Autor:
Ojha, Shashank Kumar, Hazra, Sankalpa, Mandal, Prithwijit, Patel, Ranjan Kumar, Nigam, Shivam, Kumar, Siddharth, Middey, S.
Publikováno v:
Physical Review Applied 15, 054008 (2021)
The choice of electrostatic gating over the conventional chemical doping for phase engineering of quantum materials is attributed to the fact that the former can reversibly tune the carrier density without affecting the system's level of disorder. Ho
Externí odkaz:
http://arxiv.org/abs/2105.10952
Autor:
Kumar, Siddharth, Panda, S. K., Patidar, Manju Mishra, Ojha, Shashank Kumar, Mandal, Prithwijit, Das, Gangadhar, Freeland, J. W., Ganesan, V., Baker, Peter J., Middey, S.
Publikováno v:
Phys. Rev. B 103, 184405 (2021)
The quantum spin liquid (QSL) is an exotic phase of magnetic materials where the spins continue to fluctuate without any symmetry breaking down to zero temperature. Among the handful reports of QSL with spin $S\ge$1, examples with magnetic ions on a
Externí odkaz:
http://arxiv.org/abs/2101.08445
The rapid advancement of technology in online communication via social media platforms has led to a prolific rise in the spread of misinformation and fake news. Fake news is especially rampant in the current COVID-19 pandemic, leading to people belie
Externí odkaz:
http://arxiv.org/abs/2011.13253
Autor:
Ojha, Shashank Kumar, Gogoi, Sanat Kumar, Patidar, Manju Mishra, Patel, Ranjan Kumar, Mandal, Prithwijit, Kumar, Siddharth, Venkatesh, R., Ganesan, V., Jain, Manish, Middey, Srimanta
Publikováno v:
Advanced Quantum Technology (2020)
The discovery of skyrmions has sparked tremendous interests about topologically nontrivial spin textures in recent times. The signature of noncoplanar nature of magnetic moments can be observed as topological Hall effect (THE) in electrical measureme
Externí odkaz:
http://arxiv.org/abs/2006.00252