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14 papers · 2 filters
Interplay of electron correlation and covalency in FeTe(0.6)Se(0.4)
Ganesh Adhikary, Deepnarayan Biswas, Nishaina Sahadev +5
We investigate the electronic structure of FeTe(0.6)Se(0.4) employing high resolution photoemission spectroscopy and ab initio band structure calculations. Fe 2p core level and the…
Magnetic properties of single crystalline CeMg
Pranab Kumar Das, A. Thamizhavel
Single crystal of CeMg is obtained by Bridgman method. CeMg crystallizes in the tetragonal structure with space group (#139). The Laue pattern confirms the t…
Magnetic and Structural properties of
Prashant Shahi, Saurabh Kumar, Neetika Sharma +8
Magnetization, neutron diffraction and X-ray diffraction of Zn doped MnV2O4 as a function of temperature have been measured and the critical exponents and magnetocaloric effect of…
Spectral evolution in a Shastry-Sutherland lattice, HoB(4)
D. Biswas, N. Sahadev, G. Adhikary +2
We studied the electronic structure of a Shastry-Sutherland lattice system, HoB4 employing high resolution photoemission spectroscopy and ab initio band structure calculations. The…
Universal power law in crossover from integrability to quantum chaos
Ranjan Modak, Subroto Mukerjee, Sriram Ramaswamy
We study models of interacting fermions in one dimension to investigate the crossover from integrability to non-integrability, i.e., quantum chaos, as a function of system size. Us…
A perturbative renormalization group approach to driven quantum systems
Sangita De Sarkar, Rajdeep Sensarma, K. Sengupta
We use a perturbative momentum shell renormalization group (RG) approach to study the properties of a driven quantum system at zero temperature. To illustrate the technique, we con…
Anisotropic magnetic properties and crystal electric field studies on CePdGe single crystal
Arvind Maurya, R. Kulkarni, S. K. Dhar +1
The anisotropic magnetic properties of the antiferromagnetic compound CePdGe, crystallizing in the tetragonal crystal structure have been investigated in detail on a single…
Block entanglement and fluctuations in finite size correlated electron systems
Archak Purkayastha, V. Subrahmanyam
The block entanglement entropy and fluctuations are investigated in one dimension in finite size correlated electron systems using the Gutzwiller wave function as a prototype corre…
Investigation of the quaternary Fe2-xCoxMnSi alloys by structural, magnetic, resistivity and spin polarization measurements
Lakhan Bainsla, K. G. Suresh, M. Manivel Raja +1
Effects of the Co substitution have been observed on the structural, magnetic and magneto-transport properties of Fe2-xCoxMnSi alloy. Curie temperature (TC) and saturation magnetiz…
Multiple charge density wave transitions in Lu_{2} Ir_{3} Si_{5} single crystal
N. S. Sangeetha, A. Thamizhavel, C. V. Tomy +4
The physical properties of the single-crystalline samples of Lu_{2} Ir_{3} Si_{5} have been investigated by magnetic susceptibility, resistivity and heat capacity studies. We obser…
Interplay between magnetism and magnetocaloric effect in NdCuSi
Sachin Gupta, K. G. Suresh1, A. K. Nigam
We report the magnetic, thermal, magnetocaloric and transport properties of polycrystalline NdCuSi. The compound shows a weak antiferromagnetic ordering, as confirmed by different…
Observation of large positive magnetoresistance and its sign reversal in GdRhGe
Sachin Gupta, K. G. Suresh, A. K. Nigam
Magnetic properties, heat capacity and magnetoresistance (MR) of polycrystalline GdRhGe are investigated. It shows two antiferromagnetic transitions, one at T1=31.8 K and the other…
Néel to valence-bond solid transition on the honeycomb lattice: Evidence for deconfined criticality
Sumiran Pujari, Kedar Damle, Fabien Alet
We study a spin-1/2 SU(2) model on the honeycomb lattice with nearest-neighbor antiferromagnetic exchange that favors Néel order, and competing 6-spin interactions which fa…
Change in the order of magnetic transition in HoRhGe as probed by magnetoresistance and magnetocaloric studies
Sachin B. Gupta, K. G. Suresh, A. K. Nigam
Magnetoresistance and magnetocaloric properties of polycrystalline HoRhGe have been studied. This compound orders antiferromagnetically with a Neel temperature (TN) of 5.5 K and un…