Tata Institute of Fundamental Research

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19912026

most citedSciPy 1.0--Fundamental Algorithms for Scientific Computing in Python

40.2k citations

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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2005 · cond-mat.str-elShow all

16 papers · 2 filters

cond-mat.str-el2005★ 83 cited

Field-induced first-order magnetic phase transition in an intermetallic compound, Nd7Rh3: Evidence for kinetic-hindrance, phase co-existence and percolative conduction

Kausik Sengupta, E. V. Sampathkumaran

The compound, Nd7Rh3, crystallizing in Th7Fe3-type hexagonal structure, was previously known to exhibit two magnetic transitions, one at 32 K and the other at 10 K (in zero magneti…

cond-mat.str-el2005

Observation of fluctuation induced tunneling conductance in polycrystalline CrO2

A. Bajpai, A. K. Nigam

Intergranular conduction in half metallic CrO2 is known to occur through a combination of spin dependent tunneling (driven by Coulomb Blockade (CB) effects) together with certain s…

cond-mat.str-el2005★ 122 cited

Can correlations drive a band insulator metallic?

Arti Garg, H. R. Krishnamurthy, Mohit Randeria

We analyze the effects of the on-site Coulomb repulsion U on a band insulator using dynamical mean field theory (DMFT). We find the surprising result that the gap is suppressed to…

cond-mat.str-el2005★ 25 cited

Magnetic Properties of Ternary Gallides of type RNi4Ga (R = Rare earths)

Devang A. Joshi, C. V. Tomy D. S. Rana, R. Nagarajan +1

The magnetic properties of RNi4Ga (R = La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm and Lu) compounds have been investigated. These compounds form in a hexagonal CaCu5 type structure wit…

cond-mat.str-el2005★ 73 cited

Understanding the bulk electronic structure of Ca1-xSrxVO3

Kalobaran Maiti, U. Manju, Sugata Ray +4

We investigate the electronic structure of Ca1-xSrxVO3 using careful state-of-the-art experiments and calculations. Photoemission spectra using synchrotron radiation reveal a hithe…

cond-mat.str-el2005★ 35 cited

Critical exponents and the correlation length in the charge exchange manganite spin glass Eu_{0.5}Ba_{0.5}MnO_{3}

Sunil Nair, A. K. Nigam

The critical regime of the charge exchange (CE) manganite spin glass Eu_{0.5}Ba_{0.5}MnO_{3} is investigated using linear and non linear magnetic susceptibility and the divergence…

cond-mat.str-el2005★ 23 cited

Magnetic behavior of EuCu2As2: Delicate balance between antiferromagnetic and ferromagnetic order

Kausik Sengupta, P. L. Paulose, E. V. Sampathkumaran +2

The Eu-based compound, EuCu2As2, crystallizing in the ThCr2Si2-type tetragonal structure, has been synthesized and its magnetic behavior has been investigated by magnetization (M),…

cond-mat.str-el2005★ 31 cited

Large magnetoresistance and magnetocaloric effect above 70 K in Gd2Co2Al, Gd2Co2Ga and Gd7Rh3

Kausik Sengupta, Kartik K. Iyer, E. V. Sampathkumaran

The electrical resistivity, magnetization and heat-capacity behavior of the Gd-based compounds, Gd2Co2Al, Gd2Co2Ga and Gd7Rh3, ordering magnetically at TC= 78 K, TC= 76 K and TN= 1…

cond-mat.str-el2005★ 14 cited

Negative chemical pressure effects induced by Y substitution for Ca on the exotic magnetic behavior of spin-chain compound, Ca3Co2O6

S. Rayaprol, E. V. Sampathkumaran

The magnetic behavior of a solid solution, Ca3-xYxCo2O6, based on an exotic spin-chain compound, Ca3Co2O6, crystallizing in K4CdCl6-derived rhombohedral structure is investigated.…

cond-mat.str-el2005★ 79 cited

Universal relaxational dynamics of gapped one dimensional models in the quantum sine-Gordon universality class

Kedar Damle, Subir Sachdev

A semiclassical approach to the low-temperature real time dynamics of generic one-dimensional, gapped models in the sine-Gordon model universality class is developed. Asymptoticall…

cond-mat.str-el2005★ 247 cited

Persistent supersolid phase of hard-core bosons on the triangular lattice

Dariush Heidarian, Kedar Damle

We study hard-core bosons with unfrustrated hopping ( $t$ ) and nearest neighbour repulsion ( $U$ ) on the triangular lattice. At half-filling, the system undergoes a zero temperature…

cond-mat.str-el2005★ 34 cited

Competition between Superconductivity and Charge Density Wave Ordering in the Lu $_{5}$ Ir $_{4}$ (Si $_{1 - x}$ Ge $_{x}$ ) $_{10}$ Alloy System

Yogesh Singh, R. Nirmala, S. Ramakrishnan +1

We have performed bulk measurements such as dc magnetic susceptibility, electrical resistivity and heat capacity on the pseudo-ternary alloys Lu $_{5}$ Ir $_{4}$ (Si $_{1 - x}$ Ge $_{x}$ ) $_{10}$ …

cond-mat.str-el2005★ 62 cited

Origin of charge density wave formation in insulators from a high resolution photoemission study of BaIrO3

Kalobaran Maiti, Ravi Shankar Singh, V. R. R. Medicherla +2

We investigate the origin of charge density wave (CDW) formation in insulators by studying BaIrO3 using high resolution (1.4 meV) photoemission spectroscopy. The spectra reveal the…

cond-mat.str-el2005★ 100 cited

Evidence against strong correlation in 4d transition metal oxides, CaRuO3 and SrRuO3

Kalobaran Maiti, Ravi Shankar Singh

We investigate the electronic structure of 4d transition metal oxides, CaRuO3 and SrRuO3. The analysis of the photoemission spectra reveals significantly weak electron correlation…

cond-mat.str-el2005★ 37 cited

Magnetocaloric effect in the intermetallic compound DyNi

S. K. Tripathy, K. G. Suresh, R. Nirmala +2

Magnetic and heat capacity measurements have been carried out on the polycrystalline sample of DyNi which crystallizes in the orthorhombic FeB structure (space group Pnma). This co…