Zobrazeno 1 - 10
of 1 221
pro vyhledávání: '"Bera, P. K."'
Autor:
Dixit, Srishti, Ghosh, Swayangsiddha, Mishra, Sanskar, Shahi, Nisha, Shahi, Prashant, Singh, Sanjay, Bera, A. K., Yusuf, S. M., Uwatoko, Yoshiya, Chang, C. -F., Chatterjee, Sandip
Spin gapless semiconductors based Heusler alloys are the special class of materials due to their unique band structure, high spin polarization and high Curie temperature. These materials exhibit a distinct electronic structure: a nonzero band gap in
Externí odkaz:
http://arxiv.org/abs/2410.20673
Autor:
Bera, Anil K., Bilias, Yannis
Rao (1948) introduced the score test statistic as an alternative to the likelihood ratio and Wald test statistics. In spite of the optimality properties of the score statistic shown in Rao and Poti (1946), the Rao score (RS) test remained unnoticed f
Externí odkaz:
http://arxiv.org/abs/2406.19956
Autor:
Pooja, Saha, Bikash, Choudhary, Nitesh, Maji, Pradip K., Bera, A. K., Yusuf, S. M., Sow, Chanchal
Strongly correlated system with competing ground states are often poised close to the quantum critical point. External perturbations such as pressure, strain, electric field, and chemical doping can stabilise its ground state with exotic physical pro
Externí odkaz:
http://arxiv.org/abs/2404.13593
We investigate crystal structure and magnetic properties including spin relaxation and magnetocaloric effect in NASICON type NaFe$_2$PO$_4$(SO$_4$)$_2$ sample. The Rietveld refinement of x-ray and neutron diffraction patterns show a rhombohedral crys
Externí odkaz:
http://arxiv.org/abs/2403.08679
Publikováno v:
Phys. Rev. B (2023)
Spin systems with honeycomb structures have recently attracted a great deal of attention in connection with the Kitaev quantum spin liquid state (QSL) predicted theoretically. One possible Kitaev QSL candidate is Na$_2$Co$_2$TeO$_6$ realizing a honey
Externí odkaz:
http://arxiv.org/abs/2312.04834
Spatial and spatiotemporal volatility models are a class of models designed to capture spatial dependence in the volatility of spatial and spatiotemporal data. Spatial dependence in the volatility may arise due to spatial spillovers among locations;
Externí odkaz:
http://arxiv.org/abs/2308.13061
Publikováno v:
Physical Review B 107, 064419 (2023)
We report the nature of magnetic structure, microscopic spin-spin correlations and their dependence on the underlying crystal structure of the geometrically frustrated layered spin-3/2 maple-leaf-lattice (MLL) antiferromagnet Na2Mn3O7 by a comprehens
Externí odkaz:
http://arxiv.org/abs/2302.09416
We study the problem of approximately counting cliques and near cliques in a graph, where the access to the graph is only available through crawling its vertices; thus typically seeing only a small portion of it. This model, known as the random walk
Externí odkaz:
http://arxiv.org/abs/2212.03957
Autor:
Bera, A. K., Yusuf, S. M., Saha, S. K., Kumar, M., Voneshen, D., Skourski, Y., Zvyagin, S. A.
Publikováno v:
Nature Communications 13, 6888 (2022)
Understanding exotic forms of magnetism in quantum spin systems is an emergent topic of modern condensed matter physics. Quantum dynamics can be described by particle-like carriers of information, known-as quasiparticles that appear from the collecti
Externí odkaz:
http://arxiv.org/abs/2210.11765
Computing a dense subgraph is a fundamental problem in graph mining, with a diverse set of applications ranging from electronic commerce to community detection in social networks. In many of these applications, the underlying context is better modell
Externí odkaz:
http://arxiv.org/abs/2204.08106