Publications (13)
Manifestation of history dependent critical currents via dc and ac magnetisation measurements in single crystals of CeRu2 and 2H-NbSe2
G. Ravikumar
A study of path dependent effects in single crystals of CeRu2 and 2H-NbSe2 show that critical current density Jc of the vortex state depends on its thermomagnetic history over a ve…
Superconductivity-driven magnetization modulation in YBa2Cu3O7-δ /SrTiO3/La0.67Sr0.33MnO3 heterostructures
Surendra Singh, Harsh Bhatt, Yogesh Kumar +6
Using spin polarized neutron reflectivity experiments, we demonstrate an unusual proximity behaviour when the superconductor (SC) and the ferromagnet (FM) are coupled through an in…
Superconductivity-induced Magnetic Modulation in a Ferromagnet Through an Insulator in LaCaMnO3\SrTiO3\YBa2Cu3O7-δ Hybrid Heterostructures
C. L. Prajapat, Surendra Singh, A. Paul D. Bhattacharya +3
Coexistence of ferromagnetic and superconducting orders and their interplay in ferromagnet-superconductor heterostructures is a topic of intense research. While it is well known th…
A spin ladder compound doubles its superconducting TC under a gentle uniaxial pressure
D. Mohan Radheep, R. Thiyagarjan, S. Esakkimuthu +7
Discovery of new high TC superconductors, with TC > 23 K, continues to be challenging. We have doubled the existing TC of single crystal Sr3Ca11Cu24O41, a spin ladder cuprate, from…
Stable and Metastable vortex states and the first order transition across the peak effect region in weakly pinned 2H-NbSe_2
G. Ravikumar, V. C. Sahni, A. K. Grover +6
The peak effect in weakly pinned superconductors is accompanied by metastable vortex states. Each metastable vortex configuration is characterized by a different critical current d…
Differential-thermal analysis around and below the critical temperature Tc of various low-Tc superconductors: A comparative study
M. Reibelt, A. Schilling, P. C. Canfield +2
We present specific-heat data on the type-II superconductors V3Si, LuNi2B2C and NbSe2 which were acquired with a low-temperature thermal analysis (DTA) technique. We compare our da…