7 papers
Nucleation and Enhancement of Superconductivity under Tip-Induced Strain Fields
Ghulam Mohmad, Vishal Tripathi, Goutam Sheet
A metallic point contact formed on a non-superconducting or weakly superconducting material often nucleates or enhances superconductivity confined under the contact. However, no un…
A Top-Loading Point-Contact Spectroscopy Probe with In-Situ Sample Exchange for Dilution Refrigerators
Ghulam Mohmad, Atanu Mishra, Goutam Sheet
We report the design and implementation of a point-contact spectroscopy (PCS) system integrated with a dilution refrigerator, enabling measurements down to 30 mK. The setup employs…
Quantum Interference Breaks Bias Symmetry at Extended Superconducting Interfaces
Vishal Tripathi, Goutam Sheet
Particle-hole symmetry of the Bogoliubov-de~Gennes Hamiltonian is widely assumed to enforce bias-symmetric transport at superconducting interfaces. We show that this expectation fa…
Magnetic field decouples nodeless surface and nodal bulk orders in PdTe
Atanu Mishra, Ghulam Mohmad, Kiran Bansal +4
Selective spectroscopic disentanglement of surface and bulk quantum orders remains an outstanding challenge in condensed matter physics. The candidate topological superconductor Pd…
Incommensurate Moiré Stacking and Landau Quantization Without External Magnetic Field in Turbostratic Graphene
Mona Garg, Ankit Kumar, Deepti Rana +5
Turbostratic multilayer graphene, composed of randomly twisted and stacked graphene sheets, offers a naturally disordered yet tunable platform for exploring moiré physics beyond t…
Topological polar textures on CsPbBr3 nanoplatelets
Monika Bhakar, Pooja Bhardwaj, Gokul M. Anilkumar +2
Polar topological textures like the bubble domains, flux--closures, and labyrinth etc., unlock functional responses in ferroic systems but are difficult to stabilize and control in…