441 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- CSIR National Physical Laboratory of IndiaIN125 papers
- Academy of Scientific and Innovative ResearchIN58 papers
- Indian Institute of Science BangaloreIN20 papers
- Indian Institute of Technology KanpurIN18 papers
- Bhabha Atomic Research CentreIN15 papers
- Jamia Millia IslamiaIN15 papers
- University of DelhiIN15 papers
- Indian Institute of Technology BombayIN12 papers
- Jawaharlal Nehru UniversityIN11 papers
- National Chemical LaboratoryIN11 papers
- Jawaharlal Nehru Centre for Advanced Scientific ResearchIN8 papers
- University of St AndrewsGB8 papers
21 papers · 1 filter
Superconductivity below 2.5K in Nb0.25Bi2Se3 topological insulator single crystal
M. M. Sharma, P. Rani, Lina Sang +2
We report crystal growth and below 2.5K superconductivity of Nb0.25Bi2Se3. These crystals are grown by self flux method. The X-ray diffraction (XRD) pattern of as grown crystal fla…
Ultrafast Spectroscopy of Bi2Se3 Topological Insulator
P. Sharma, D. Sharma, N. Vashistha +4
We investigate the ultrafast transient absorption spectrum of Bi2Se3 topological insulator. Bi2Se3 single crystal is grown through conventional solid-state reaction routevia self-f…
Hikami-Larkin-Nagaoka (HLN) Fitting of Magneto Transport of Bi2Se3 Single Crystal in Different Magnetic Field Ranges
Deepak Sharma, P. Rani, P. K. Maheshwari +5
We report the detailed study of structural micro-structuraland high magnetic field magneto transport propertiesof Bi2Se3single crystal. Bi2Se3 single crystal is grown through conve…
NbOx based memristor as artificial synapse emulating short term plasticity
Sweety Deswal, Ashok Kumar, Ajeet Kumar
Memristors can mimic the functions of biological synapse, where it can simultaneously store the synaptic weight and modulate the transmitted signal. Here, we report Nb/Nb2O5/Pt bas…
Growth of SiO2 microparticles by using modified Stober method: Effect of ammonia solution concentration and TEOS concentration
Shrestha Bhattacharya, Aishik Basu Malick, Mrinal Dutta +3
The unique structural features and suitability of the SiO2 micro particles in different application areas have mobilized a worldwide interest in the last few decades. In this repor…
Performance limitation of Si Nanowire solar cells: Effects of nanowire length and surface defects
Deepika Bora, Shrestha Bhattacharya, Nitin Kumar +6
In Si nanowire (SiNW) solar cells enhanced light confinement property in addition to decoupling of charge carrier collection and light absorption directions plays a significant rol…
Structural, Surface Morphology and Magneto-Transport properties of Self Flux Grown Eu Doped Bi2Se3 Single Crystal
Rabia Sultana, Ganesh Gurjar, Bhasker Gahtori +2
Here, we report the effect of europium (Eu) doping in Bi2Se3 topological insulator (TI) by using different characterization techniques viz. X-ray diffraction (XRD), scanning electr…
Flux Free Single Crystal Growth and Detailed Physical Property Characterization of Bi1-xSbx (x = 0.05, 0.1 and 0.15) Topological Insulator
Rabia Sultana, Ganesh Gurjar, Bhasker Gahtori +2
Here, we report the crystal growth, physical and transport properties of Bi1-xSbx (x = 0.05, 0.1 and 0.15) topological insulator. Single crystals of Bi1-xSbx (x = 0.05, 0.1 and 0.1…
Substrate mediated nitridation of niobium into superconducting Nb2N thin films for phase slip study
Bikash Gajar, Sachin Yadav, Deepika Sawle +4
Here we report a novel nitridation technique for transforming niobium into hexagonal Nb2N which appears to be superconducting below 1K. The nitridation is achieved by high temperat…
Protected superconductivity at the boundaries of charge-density-wave domains
B. Leridon, J. Vanacken, V. Moshchalkov +7
Solid 4He may acquire superfluid characteristics due to the frustration of the solid phase at grain boundaries. Here, we show that an analogous effect occurs in systems with compet…
Identification of point defects on Co-Ni co-doping in SnO nanocrystals and their effect on the structural and optical properties
S. Roy, Brijmohan Prajapati, A. Singh +3
SnCoNiO (0 0.04) nanocrystals, with average crystallite size in the range of 7.3 nm (=0.00) to 5.6 nm (=0.04), have been synthes…
Tin Titanate: the hunt for a new ferroelectric perovskite
J. Gardner, Atul Thakre, Ashok Kumar +1
We review all the published literature and show that there is no experimental evidence for homogeneous tin titanate SnTiO3 in bulk or thin-film form. Instead a combination of unrel…
Spin-dependent scattering induced negative magnetoresistance in topological insulator Bi2Te3 nanowires
Biplab Bhattacharyya, Bahadur Singh, R. P. Aloysius +7
Studies of negative magnetoresistance in novel materials have recently been in the forefront of spintronic research. Here, we report an experimental observation of the temperature…
Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO2
Dan Sun, Dmitry Sokolov, Jack Bartlett +8
In the triangular layered magnet PdCrO2 the intralayer magnetic interactions are strong, however the lattice structure frustrates interlayer interactions. In spite of this, long-ra…
Probing the Griffiths like phase, unconventional dual glassy states, giant exchange bias effects and its correlation with its electronic structure in Pr2-xSrxCoMnO6
Arkadeb Pal, Prajyoti Singh, Vinod K Gangwar +7
Electronic structure, electrical transport, dc and ac magnetization properties of the hole substituted (Sr2+) partially B-site disordered double perovskite Pr2-xSrxCoMnO6 system ha…
Substrate Mediated Synthesis of Ti-Si-N Nano-and-Micro Structures for Optoelectronic Applications
Sachin Yadav, Alka Sharma, Bikash Gajar +7
Being one of the strongest materials, ternary TiSiN exhibits a very interesting family of binary transition metal nitride and silicide systems. A novel technique to fabricate morph…
Controlled inter-state switching between quantized conductance states in resistive devices for multilevel memory
Sweety Deswal, Rupali R. Malode, Ashok Kumar +1
A detailed understanding of quantization conductance (QC), their correlation with resistive switching phenomena and controlled manipulation of quantized states is crucial for reali…
Novel synthesis of topological insulator based nanostructures (Bi2Te3) demonstrating high performance photodetection
Alka Sharma, T D Senguttuvan, V N Ojha +1
The rapid progress in 2D material research has triggered the growth of various quantum nanostructures-nanosheets, nanowires, nanoribbons, nanocrystals and the exotic nature origina…
Experimental Observation of Invariance of Spectral Degree of Coherence with Change in Bandwidth of Light
Bhaskar Kanseri, Hem Chandra Kandpal
An experimental study is conducted to show the effect of the change in bandwidth of light on the spectral degree of coherence at a pair of points in the cross-section of a beam. Fo…
Giant negative magnetoresistance and kinetic arrest of first-order ferrimagnetic-antiferomagnetic transition in Ge doped MnSb
Vikram Singh, R Rawat, Pallavi Kushwaha
Effect of Ge substitution on first order ferrimagnetic (FRI) - antiferromagnetic (AFM) transition in MnSb has been studied. It shows that transition temperature (T) can be…
Probing the multi spin-phonon coupling and local B-site disorder in Pr2CoFeO6 by Raman spectroscopy and correlation with its electronic structure by X-ray photoemission spectroscopy
Arkadeb Pal, Surajit Ghosh, Amish G. Joshi +5
Electronic structure near Fermi level of Pr2CoFeO6 (at 300 K) was investigated by X-ray photoemission spectroscopy (XPS) technique. All three cations, i.e., Pr, Co and Fe were foun…