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Successive ferroelectric orders and magnetoelectric coupling without long-range magnetic order in highly frustrated pyrochlore compounds: Sm$_2$Ti$_{2-x}$V$_x$O$_7$

Autor: Mukherjee, S., Ivashko, O., Majumdar, S., Kumar, A., Giri, S.

Sm$_2$Ti$_2$O$_7$, a member of rare-earth titanate pyrochlores, exhibits dipolar-octupolar antiferromagnetism below $T_N$ = 0.35 K. We observed two ferroelectric transitions at 182 ($T_{FE1}$) and 52 K ($T_{FE2}$), significantly higher than $T_N$ for

Externí odkaz: http://arxiv.org/abs/2407.19883

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Coupled linear Schr\'odinger equations: Control and stabilization results

Autor: Bhandari, K., Capistrano-Filho, R. de A., Majumdar, S., Tanaka, T. Y.

This article presents some controllability and stabilization results for a system of two coupled linear Schr\"odinger equations in the one-dimensional case where the state components are interacting through the Kirchhoff boundary conditions. Consider

Externí odkaz: http://arxiv.org/abs/2310.04931

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Magnetization, dielectric and thermal studies in the double perovskite polycrystalline compound Tm2CoMnO6

Autor: Banerjee, A., Das, Gangadhar, Rajaji, V., Majumdar, S., Chakrabarti, P. K.

We report here a comprehensive study on structural, magnetic, caloric and electronic properties of the monoclinic phase of double perovskite compound Tm2CoMnO6 (TCMO) in its polycrysttaline format. Magnetic measurements confirm the presence of therma

Externí odkaz: http://arxiv.org/abs/2303.10907

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Akademický článek

Transitioning from Aflibercept to Biosimilar Ranibizumab in Neovascular AMD (The TRANSFORM Trial): A Multicenter Observational Study

Autor: Chakraborty D, Boral S, Sinha TK, Das A, Mukherjee A, Majumdar S, Bhattacharya R, Maitra R

Publikováno v: Clinical Ophthalmology, Vol Volume 18, Pp 1819-1828 (2024)

Debdulal Chakraborty,1 Subhendu Boral,1 Tushar Kanti Sinha,1 Arnab Das,1 Angshuman Mukherjee,1 Saptorshi Majumdar,1 Ranabir Bhattacharya,2 Ritobroto Maitra3 1Department of Vitreoretinal Services, Disha Eye Hospitals, Kolkata, West Bengal, India; 2Dep

Externí odkaz: https://doaj.org/article/055f756858e742eda516660606c4abff

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Unconventional topological phase transition from semimetal to insulator in SnBi2Te4: Role of anomalous thermal expansion

Autor: Dalui, T. K., Das, B., Barman, C. K., Ghose, P. K., Sarma, A., Mahatha, S. K., Diekmann, F., Rossnagel, K., Majumdar, S., Alam, A., Giri, S.

Publikováno v: J. Phys.: Condens. Matter 35, 465701 (2023)

We propose SnBi2Te4 to be a novel candidate material exhibiting temperature (T) mediated transitions between rich topological phases. From a combined theoretical and experimental studies, we find that SnBi2Te4 goes from a low-T topological semimetall

Externí odkaz: http://arxiv.org/abs/2212.07148

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Bulk Rashba spin splitting and Dirac surface state in $p$-type (Bi$_{0.9}$Sb$_{0.1})_2$Se$_3$ single crystal

Autor: Ghose, P. K., Bandyopadhyay, S., Dalui, T. K., Tseng, J. -C., Dey, J. K., Tomar, R., Chakraverty, S., Majumdar, S., Dasgupta, I., Giri, S.

We report bulk Rashba spin splitting (RSS) and associated Dirac surface state in (Bi$_{0.9}$Sb$_{0.1})_2$Se$_3$, exhibiting dominant $p$-type conductivity. We argue from the synchrotron diffraction studies that origin of the bulk RSS is due to a stru

Externí odkaz: http://arxiv.org/abs/2110.09623

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