Probing magnetism of individual nano-structures using Nb μ -SQUIDs in hysteresis free mode

Autor: Hervé Courtois, Ganesh Kotagiri, Rini Ganguly, Clemens Winkelmann, Anjan K. Gupta, Harsh Parashari, Sagar Paul

Publikováno v: Journal of Magnetism and Magnetic Materials
Journal of Magnetism and Magnetic Materials, Elsevier, 2020, 503, pp.166625. ⟨10.1016/j.jmmm.2020.166625⟩

The magnetization reversal of an individual magnetic nano-structure has been best studied using a μ -SQUID. An optimum inductive shunt helps in eliminating the hysteresis in μ -SQUID’s current voltage characteristics, giving thus a direct voltage

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2e280b7f6f265f659c5b30fa55d148a
https://hal.archives-ouvertes.fr/hal-02655347

Non-invasive nanoscale potentiometry and ballistic transport in epigraphene nanoribbons

Autor: David Wander, Clemens Winkelmann, Vladimir Prudkovskiy, Hervé Courtois, Walt A. de Heer, Alessandro de Cecco, Rini Ganguly, Claire Berger

Publikováno v: Nano Letters
Nano Letters, American Chemical Society, 2020, 20 (5), pp.3786-3790. ⟨10.1021/acs.nanolett.0c00838⟩

International audience; The recent observation of non-classical electron transport regimes in two-dimensional materials has called for new high-resolution non-invasive techniques to locally probe electronic properties. We introduce a novel hybrid sca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96f610fd6ff173f4854221b8ca79959f

Magnetic field induced emergent inhomogeneity in a superconducting film with weak and homogeneous disorder

Autor: Rini Ganguly, Indranil Roy, Harkirat Singh, Pratap Raychaudhuri, Amit Ghosal, Anurag Banerjee

Publikováno v: Physical Review B. 96

When a magnetic field is applied, the mixed state of a conventional Type II superconductor gets destroyed at the upper critical field Hc2, where the normal vortex cores overlap with each other. Here, we show that in the presence weak and homogeneous

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ead40cfa844c8b2e85b5fa11765eca66
https://doi.org/10.1103/physrevb.96.054509

Erratum: Disordering of the vortex lattice through successive destruction of positional and orientational order in a weakly pinned Co0.0075NbSe2 single crystal

Autor: Harkirat Singh, Rini Ganguly, Arumugam Thamizhavel, Parasharam M. Shirage, Somesh Chandra Ganguli, Garima Saraswat, Pratap Raychaudhuri, Vivas Bagwe

Publikováno v: Scientific Reports

The vortex lattice in a Type II superconductor provides a versatile model system to investigate the order-disorder transition in a periodic medium in the presence of random pinning. Here, using scanning tunnelling spectroscopy in a weakly pinned Co0.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba4a0adf857c00e85b7bd2b956c61999
http://europepmc.org/articles/PMC4733058

Slowing down of vortex motion at the Berezinskii-Kosterlitz-Thouless transition in ultrathin NbN films

Autor: Rini Ganguly, Dipanjan Chaudhuri, Lara Benfatto, Pratap Raychaudhuri

Publikováno v: Physical review. B, Condensed matter and materials physics 91 (2015): 054514–4514. doi:10.1103/PhysRevB.91.054514
info:cnr-pdr/source/autori:Rini Ganguly(1); Dipanjan Chaudhuri (1,*); Pratap Raychaudhuri (1); Lara Benfatto (2)/titolo:Slowing down of vortex motion at the Berezinskii-Kosterlitz-Thouless transition in ultrathin NbN films/doi:10.1103%2FPhysRevB.91.054514/rivista:Physical review. B, Condensed matter and materials physics/anno:2015/pagina_da:054514/pagina_a:4514/intervallo_pagine:054514–4514/volume:91

We present a quantitative comparison between the measurements of the complex conductance at low [kilohertz (kHz)] and high [gigahertz (GHz)] frequency in a thin superconducting film of NbN and the theoretical predictions of the dynamical Berezinksii-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92573d1527ca31fae3c9d37cceb33a4f
http://hdl.handle.net/11573/1338978