217 citations · 3.6k across the 102 of their papers we have counts for
11 papers · 1 filter
Quantum critical scaling of the conductivity tensor at the metal-insulator transition in NbTiN
D. Hazra, Prosenjit Haldar, M. S. Laad +12
In contrast to the Landau paradigm, a metal-insulator transition (MIT), driven purely by competition between itinerance and localization and unaccompanied by any conventional (e.g,…
Quantum phase transition in few-layer NbSe probed through quantized conductance fluctuations
Hemanta Kumar Kundu, Sujay Ray, Kapildeb Dolui +6
We present the first observation of dynamically modulated quantum phase transition (QPT) between two distinct charge density wave (CDW) phases in 2-dimensional 2H-NbSe. There i…
Quantum critical magneto-transport at a continuous metal-insulator transition
P. Haldar, M. S. Laad, S. R. Hassan +2
In contrast to the seminal weak localization prediction of a non-critical Hall constant () at the Anderson metal-insulator transition (MIT), in quite a few real diso…
Study of CeNi4Mn by neutron diffraction
Indu Dhiman, A. Das, S. K. Dhar +3
We report neutron diffraction measurements on CeNi4Mn, which has recently been identified as a soft ferromagnet (Tc ~ 140 K) with a sizeable spin-transport polarization. Our data s…
The role of critical current on point contact Andreev Reflection spectrum between a normal metal and a superconductor
G. Sheet, S. Mukhopadhyay, P. Raychaudhuri
The point contact spectrum between a normal metal and a superconductor often shows unexpected sharp dips in the conductance at voltage values larger than the superconducting energy…
Photoemission and x-ray absorption spectroscopy study of electron-doped colossal magnetoresistance manganite: La0.7Ce0.3MnO3 film
S. W. Han, J. -S. Kang, K. H. Kim +11
The electronic structure of La0.7Ce0.3MnO3 (LCeMO) thin film has been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The Ce 3d core-le…
Transport spin polarisation in SrRuO3 measured through Point Contact Andreev reflection
P. Raychaudhuri, A. P. Mackenzie, J. W. Reiner +1
We report a study in which Andreev reflection using a Nb point contact is used to measure the transport spin polarisation of the 4d itinerant ferromagnet SrRuO3. By performing the…
Observation of minority spin character of the new electron doped manganite La_0.7Ce_0.3MnO_3 from tunneling magnetoresistance
C. Mitra, P. Raychaudhuri, K. Doerr +4
We report the magnetotransport characteristics of a trilayer ferromagnetic tunnel junction build of an electron doped manganite (La_0.7Ce_0.3MnO_3) and a hole doped manganite (La_0…
A 'p-n' diode with hole and electron-doped lanthanum manganite
C. Mitra, P. Raychaudhuri, G. Kobernik +4
The hole-doped manganite La0.7Ca0.3MnO3 and the electron-doped manganite La0.7Ce0.3MnO3 undergo an insulator to metal transition at around 250 K, above which both behave as a polar…
The effect of the total density of states at Fermi level on spin polarised tunnelling in granular La0.55Ho0.15Sr0.3MnO3
P. Raychaudhuri, A. K. Nigam, R. Pinto +2
We study the spin polarised tunnelling mechanism through magnetisation and magnetoresistance in the granular polycrystalline colossal magnetoresistive manganite, La0.55Ho0.15Sr0.3M…
Magnetic field dependent variable range hopping behaviour in resistivity at low temperatures in polycrystalline colossal magnetoresistive manganites: evidence of spin polarised tunnelling
P. Raychaudhuri, P. Taneja, S. Sarkar +3
It has been observed that the low temperature magnetoresistance behaviour in polycrystalline colossal magnetoresistive (CMR) manganites differ significantly from the single crystal…