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 2018 · cond-mat.str-elShow all

16 papers · 2 filters

cond-mat.str-el2018★ 2 cited

Investigation of Thermodynamic Properties of Cu(NH3)4SO4.H2O, a Heisenberg Spin Chain Compound

Tanmoy Chakraborty, Harkirat Singh, Dipanjan Chaudhuri +3

Detailed experimental investigations of thermal and magnetic properties are presented for Cu(NH3)4SO4.H2O, an ideal uniform Heisenberg spin half chain compound. A comparison of the…

cond-mat.str-el2018★ 6 cited

Statistics-tuned phases of pseudofermions in one dimension

Adhip Agarwala, Gaurav Kumar Gupta, Vijay B. Shenoy +1

We show that a quadratic system of pseudofermions, with tunable fractionalised statistics, can host a rich phase diagram on a one dimensional chain with nearest and next nearest ne…

cond-mat.str-el2018★ 13 cited

Non-Fermi-liquid behavior at anti-ferromagnetic quantum critical point in heavy fermion system Ce(Cu $_{1 - x}$ Co $_{x}$ ) $_{2}$ Ge $_{2}$

Rajesh Tripathi, Debarchan Das, C. Geibel +2

Polycrystalline samples of Ce(Cu $_{1 - x}$ Co $_{x}$ ) $_{2}$ Ge $_{2}$ were investigated by means of electrical resistivity $ρ$ ( $T$ ), magnetic susceptibility $χ$ ( $T$ ), specific heat $C$ $_{p}$ ( $T$ …

cond-mat.str-el2018★ 4 cited

Interplay of uniform U(1) quantum spin liquid and magnetic phases in rare earth pyrochlore magnets : a fermionic parton approach

Sambuddha Sanyal, Kusum Dhochak, Subhro Bhattacharjee

We study the uniform time reversal invariant $U (1)$ quantum spin liquid (QSL) with low energy fermionic quasi-particles for rare earth pyrochlore magnets and explore its magnetic i…

cond-mat.str-el2018★ 8 cited

Keldysh field theory of a driven dissipative Mott insulator: nonequilibrium response and phase transitions

Sarath Sankar, Vikram Tripathi

Understanding strongly correlated systems driven out of equilibrium is a challenging task necessitating the simultaneous treatment of quantum mechanics,dynamical constraints and st…

cond-mat.str-el2018★ 7 cited

Spin correlation in trigonal EuMn $_{2}$ As $_{2}$

A. Dahal, Yiyao Chen, T. Heitmann +3

The trigonal structure of EuMn $_{2}$ As $_{2}$ is an anomaly in the tetragonal 122-type pnictide family. We report detailed investigation of the underlying magnetic correlations in s…

cond-mat.str-el2018★ 29 cited

Magnetocrystalline anisotropy in the Kondo lattice compound CeAgAs $_{2}$

Rajib Mondal, Rudheer Bapat, S. K. Dhar +1

We report on the single crystal growth and anisotropic physical properties of CeAgAs $_{2}$ . The compound crystallizes as on ordered variant of the HfCuSi $_{2}$ -type crystal structure a…

cond-mat.str-el2018★ 3 cited

Eu valence transition behavior in the nano form of EuPd2Si2

Kartik K Iyer, Tathamy Basu, P. L. Paulose +1

The compound EuPd2Si2 is a well-known valence-fluctuating compound with a largest variation of Eu valence in a narrow temperature interval (around 150 K). The ball-milled form of t…

cond-mat.str-el2018★ 7 cited

High Temperature Superconductivity in the Cuprates: Materials, Phenomena and a Mechanism

Sumilan Banerjee, Chandan Dasgupta, Subroto Mukerjee +2

Superconductivity in the cuprates, discovered in the late 1980s and occurring at unprecedentedly high temperatures (up to about 140K) in about thirty chemically distinct families,…

cond-mat.str-el2018★ 14 cited

Multiferroicity in a spin-chain compound, Tb2BaCoO5, with exceptionally large magnetodielectric coupling in polycrystalline form

Sanjay K Upadhyay, E. V. Sampathkumaran

We report the results of detailed investigations of magnetization, heat-capacity, dielectric, pyrocurrent, and magneto(di)electric measurements on Tb2BaCoO5, belonging to a hither-…

cond-mat.str-el2018★ 12 cited

Two-particle spectral function for disordered s-wave superconductors: local maps and collective modes

Abhisek Samanta, Amulya Ratnakar, Nandini Trivedi +1

We make the first testable predictions for the local two-particle spectral function of a disordered s-wave superconductor, probed by scanning Josephson spectroscopy (sjs), providin…

cond-mat.str-el2018★ 32 cited

Reentrant cluster glass and stability of ferromagnetism in Ga2MnCo Heusler alloy

Tamalika Samanta, P. A. Bhobe, A. Das +2

We present here a detailed investigation into the magnetic ordering of full Heusler alloy Ga $_{2}$ MnCo using dc, ac magnetization measurements, neutron diffraction and neutron depola…

cond-mat.str-el2018★ 13 cited

Metamagnetism and zero-scale-factor universality in the two-dimensional $J$ - $Q$ model

Adam Iaizzi, Kedar Damle, Anders W. Sandvik

Using a combination of quantum Monte Carlo and exact methods, we study the field-driven saturation transition of the two-dimensional $J$ - $Q$ model, in which the antiferromagnetic H…

cond-mat.str-el2018★ 26 cited

Coupled magnetic and ferroelectric states in the distorted honeycomb system Fe $_{4}$ Ta $_{2}$ O $_{9}$

Soumendra Nath Panja, Luminita Harnagea, Jitender Kumar +4

We report on the magnetic, thermodynamic, dielectric, and pyroelectric measurements on the hitherto unreported Fe $_{4}$ Ta $_{2}$ O $_{9}$ . This system is seen to exhibit a series of m…

cond-mat.str-el2018★ 18 cited

Quantum phase transition in few-layer NbSe $_{2}$ 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 $_{2}$ . There i…

cond-mat.str-el2018★ 59 cited

Dynamics of a quantum spin liquid beyond integrability $-$ the Kitaev-Heisenberg- $Γ$ model in an augmented parton mean-field theory

Johannes Knolle, Subhro Bhattacharjee, Roderich Moessner

We present an augmented parton mean-field theory which (i) reproduces the $e x a c t$ ground state, spectrum, and dynamics of the quantum spin liquid phase of Kitaev's honeycomb model;…

Investigation of Thermodynamic Properties of Cu(NH3)4SO4.H2O, a Heisenberg Spin Chain Compound

Statistics-tuned phases of pseudofermions in one dimension

Non-Fermi-liquid behavior at anti-ferromagnetic quantum critical point in heavy fermion system Ce(Cu1−x​Cox​)2​Ge2​