Zobrazeno 1 - 10
of 1 713
pro vyhledávání: '"Umesh, V."'
Magnetic field emerging from the geometric curvature of quantum structure of electrons in a crystal bends electronic trajectory causing anomalous linear and nonlinear electrical Hall effects that have been observed in low symmetry crystals with narro
Externí odkaz:
http://arxiv.org/abs/2403.05872
We consider several related examples of Fourier-Mukai transformations involving the quot scheme. A method of showing conservativity of these Fourier-Mukai transformations is described.
Comment: Final version
Comment: Final version
Externí odkaz:
http://arxiv.org/abs/2307.05118
In this article, we define the tensor product $V\otimes W$ of a representation $V$ of a quiver $Q$ with a representation $W$ of an another quiver $Q'$, and show that the representation $V\otimes W$ is semistable if $V$ and $W$ are semistable. Over th
Externí odkaz:
http://arxiv.org/abs/2305.09159
Autor:
Kumar, Narendra, Waghmare, Umesh V.
Publikováno v:
Acta Materialia 255 (2023) 119077
With first-principles theoretical analysis of the local structure using Bond Orientational Order parameters and Voronoi partitioning, we establish (a) HCP$\rightarrow$BCC structural transformation in high-entropy alloys (HEAs) Nb$_x$(HfZrTi)$_y$ at 1
Externí odkaz:
http://arxiv.org/abs/2303.01761
Autor:
Dubey, Umesh V, Sarkar, Subham
Kapranov and schechtman gave quiver description of perverse sheaves on real hyperplane arrangements. We used this description to relate the perverse sheaves on Coxeter hyperplane arrangements of type $\mathcal A_n$ for different values of $n$. As a c
Externí odkaz:
http://arxiv.org/abs/2211.09525
Autor:
Dubey, Umesh V, Sahoo, Gopinath
We give a condition which characterises those weight structures on a derived category which come from a Thomason filtration on the underlying scheme. Weight structures satisfying our condition will be called $\otimes ^c$-weight structures. More preci
Externí odkaz:
http://arxiv.org/abs/2211.02318
Autor:
Malavi, Pallavi, Paul, Arpita, Bera, Achintya, Muthu, D V S, Majhi, Kunjalata, Kumar, P S Anil, Waghmare, Umesh V., Sood, A. K., Karmakar, S.
Publikováno v:
Phys. Rev. B 107, 024506, 2023
Quasi-two-dimensional layered BiSe, a natural super-lattice with Bi2Se3-Bi2-Bi2Se3 units, has recently been predicted to be a dual topological insulator, simultaneously weak topological insulator as well as topological crystalline insulator. Here usi
Externí odkaz:
http://arxiv.org/abs/2205.06626
Autor:
Pal, Srishti, Malavi, Pallavi, Sinha, Arijit, Ali, Anzar, Sakrikar, Piyush, Joseph, Boby, Waghmare, Umesh V., Singh, Yogesh, Muthu, D. V. S., Karmakar, S., Sood, A. K.
The layered honeycomb lattice iridate Cu$_2$IrO$_3$ is the closest realization of the Kitaev quantum spin liquid, primarily due to the enhanced interlayer separation and nearly ideal honeycomb lattice. We report pressure-induced structural evolution
Externí odkaz:
http://arxiv.org/abs/2205.00966
Autor:
Sahoo, Gopinath, Dubey, Umesh V.
We introduce a tensor compatibility condition for t-structures. For any Noetherian scheme $X$, we prove that there is a one-to-one correspondence between the set of filtrations of Thomason subsets and the set of aisles of compactly generated tensor c
Externí odkaz:
http://arxiv.org/abs/2204.05015
Autor:
Sinha, Subhajit, Adak, Pratap Chandra, Chakraborty, Atasi, Das, Kamal, Debnath, Koyendrila, Sangani, L. D. Varma, Watanabe, Kenji, Taniguchi, Takashi, Waghmare, Umesh V., Agarwal, Amit, Deshmukh, Mandar M.
Publikováno v:
Nature Physics, 18, 765-770 (2022)
Topological aspects of electron wavefunction play a crucial role in determining the physical properties of materials. Berry curvature and Chern number are used to define the topological structure of electronic bands. While Berry curvature and its eff
Externí odkaz:
http://arxiv.org/abs/2204.02848