A5091029348- 2D Materials and Applications
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- MXene and MAX Phase Materials
- Iron-based superconductors research
- Chalcogenide Semiconductor Thin Films
- Acoustic Wave Resonator Technologies
- Algebraic structures and combinatorial models
- Gas Sensing Nanomaterials and Sensors
- Topological Materials and Phenomena
- Organic and Molecular Conductors Research
- Heusler alloys: electronic and magnetic properties
- Advanced Thermoelectric Materials and Devices
- Theoretical and Computational Physics
- Quantum many-body systems
- Graphene research and applications
Indian Institute of Science Education and Research Pune
2021-2025
We report the discovery of a novel gapless quantum spin liquid in S=1 honeycomb system Cu3LiRu2O6 with Ru4+ (4d4) where moments remain dynamic down to 50 mK. Heat capacity measurements show no sign magnetic ordering 60 mK spite Curie-Weiss temperature = -222 K indicating strong antiferromagnetic interaction. In zero field, heat shows linear T-dependence Sommerfeld coefficient 107 mJ/mol K2 is much larger than that found typical Fermi liquids. Our local probe 7Li nuclear resonance (NMR) find...
MoTe2 has a stable hexagonal semiconducting phase (2H) as well two semimetallic phases with monoclinic (1T′) and orthorhombic (Td) structures. A structural change can thus be accompanied by significant in electronic transport properties. The are connected temperature driven transition could exhibit topological Here we make extensive Raman measurements function of layer thickness, temperature, electrostatic doping on few 2H-MoTe2 also 1T′-MoTe2 Td-WTe2. Recent work raised the possibility...
We have demonstrated the possibility to control otherwise robust magnetic properties of transition-metal phosphorus trisulfides ($\text{Mn/Fe}\text{/}\mathrm{NiP}{\mathrm{S}}_{3}$) in their heterostructures with Weyl semimetallic $\mathrm{Mo}{\mathrm{Te}}_{2}$ which can be attributed Dzyaloshinskii-Moriya (DM) interactions at interface two materials. While DM interaction is known scale strength spin-orbit coupling (SOC), we demonstrate using experiments on a variety substrates (underlayers)...
Abstract NiPS 3 is a van der Waals antiferromagnet which has been shown to exhibit spin-phonon and spin-charge coupling in the antiferromagnetically ordered state below T N = 155 K. It also rare Ni-based negative charge-transfer-type insulator with Ni valence linear superposition <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mi>ψ</mml:mi> <mml:mo>=</mml:mo> <mml:mtext> </mml:mtext> </mml:mrow> <mml:mi>α</mml:mi> <mml:msup> <mml:mi>d</mml:mi>...
We report growth of high-quality single crystals $\mathrm{CeC}{\mathrm{l}}_{3}$ using a modified Bridgman-Stockbarger method in an infrared image furnace. The grown are characterized single-crystal(powder) x-ray diffraction, Laue Raman spectroscopy, magnetization, and heat-capacity probes. crystallizes hexagonal structure ($P{6}_{3}/m$) with weak trigonal distortion ($P\overline{3}$). spectrum at 300 K shows five clearly resolvable phonon modes 106.8, 181.2, 189, 213,...
Here, we study YbI$_3$, a quasi-2D layered material with Yb atoms arranged on an ideal honeycomb network of edge-sharing YbI$_6$ octahedra, analogous to the low-temperature phase $\alpha-$RuCl$_3$. High quality single crystals YbI$_3$ are grown from and I as starting precursors, using vapor transport technique. The characterized by crystal x-ray diffraction, Raman spectroscopy, magnetization, heat capacity probes. crystal-field split ground state Yb$^{3+}$ in \Yb~ is well-isolated Kramers...
NiPS3 is a Van der Waals antiferromagnet that has been found to display spin-charge and spin-phonon coupling in its antiferromagnetically ordered state below TN = 155 K. Here, we study high-quality crystals of site-diluted Ni1-xZnxPS3 (0 < x 0.2) using temperature-dependent specific heat Raman spectroscopy probes. The site dilution suppresses the antiferromagnetic ordering accordance with mean-field prediction. In NiPS3, show phonon mode P2 (176 cm-1) associated Ni vibrations distinct...
Tailoring the quantum many-body interactions in layered materials through appropriate heterostructure engineering can result emergent properties that are absent constituent thus promising potential future applications. In this article, we have demonstrated controlling otherwise robust magnetic of transition metal phosphorus trisulphides (Mn/Fe/NiPS3) their heterostructures with Weyl semimetallic MoTe2 which be attributed to Dzyaloshinskii Moriya (DM) at interface two different materials....
We have grown high-quality single crystals of CeCl_3 using a modified Bridgman Stockbarger method in an infrared image furnace. These are characterized single-crystal x-ray diffraction, Laue Raman spectroscopy, magnetic susceptibility, and heat capacity probes. crystallizes with trigonal crystal structure (space group P-3, number 147). The field split J = 5/2 manifold Ce ion has effective spin 1/2 Kramers doublet ground. exchange coupling between the moments is rather weak (Weiss temperature...