Zobrazeno 1 - 10
of 840
pro vyhledávání: '"Waghmare, 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
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:
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:
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
Co-substituted BiFeO3: electronic, ferroelectric, and thermodynamic properties from first principles
Bismuth ferrite, BiFeO3, is a multiferroic solid that is attracting increasing attention as a potential photocatalytic material, because the ferroelectric polarisation enhances the separation of photogenerated carriers. With the motivation of finding
Externí odkaz:
http://arxiv.org/abs/2201.11161
Autor:
Pal, Srishti, Debnath, Koyendrila, Gupta, Satyendra Nath, Harnagea, Luminita, Muthu, D. V. S., Waghmare, Umesh V., Sood, A. K.
We study pressure-induced structural evolution of vanadium diselenide (VSe2), a 1T polymorphic member of the transition metal di-chalcogenide (TMD) family using synchrotron-based powder X-ray diffraction (PXRD) and first-principles density functional
Externí odkaz:
http://arxiv.org/abs/2102.01560
Autor:
Aggarwal, Abhishek, Vinayak, Bag, Saientan, Bhattacharyya, Chiranjib, Waghmare, Umesh V., Maiti, Prabal K
Double-stranded DNA (dsDNA) has been established as an efficient medium for charge migration, bringing it to the forefront of the field of molecular electronics as well as biological research. The charge migration rate is controlled by the electronic
Externí odkaz:
http://arxiv.org/abs/2011.12018
Autor:
Pal, Srishti, Malavi, Pallavi, Chaturvedi, Shashank, Das, Subhadip, Karmakar, S., Muthu, D. V. S., Waghmare, Umesh V., Sood, A. K.
Publikováno v:
Phys. Rev. B 102, 214107 (2020)
The insulating ferrimagnet Cu2OSeO3 shows a rich variety of phases such as skyrmion lattice and helical magnetism controlled by interplay of different exchange interactions which can be tuned by external pressure. In this work we have investigated pr
Externí odkaz:
http://arxiv.org/abs/2009.10469
Publikováno v:
In Materials & Design December 2023 236
