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of 1 158
pro vyhledávání: '"DASGUPTA, I"'
Autor:
Bandyopadhyay, Abhisek, Chakraborty, A., Bhowal, S., Kumar, Vinod, Sala, M. M., Efimenko, A., Meneghini, C., Dasgupta, I., Dasgupta, T. Saha, Mahajan, A. V., Ray, Sugata
Spin-orbit coupling (SOC) offers a large variety of novel and extraordinary magnetic and electronic properties in otherwise `ordinary pool' of heavy ion oxides. Here we present a detailed study on an apparently isolated hexagonal 2$H$ spin-chain $d^4
Externí odkaz:
http://arxiv.org/abs/2111.00925
Autor:
Ghose, P. K., Bandyopadhyay, S., Dalui, T. K., Tseng, J. -C., Dey, J. K., Tomar, R., Chakraverty, S., Majumdar, S., Dasgupta, I., Giri, S.
We report bulk Rashba spin splitting (RSS) and associated Dirac surface state in (Bi$_{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
Autor:
Bandyopadhyay, Abhisek, Chakraborty, Atasi, Bhowal, Sayantika, Kumar, Vinod, Sala, M. Moretti, Efimenko, A., Bert, F., Biswas, P. K., Meneghini, C., Büttgen, N., Dasgupta, I., Dasgupta, T. Saha, Mahajan, A. V., Ray, Sugata
Spin-orbit coupling (SOC) often gives rise to interesting electronic and magnetic phases in an otherwise ordinary pool of paramagnetic heavy metal oxides. In presence of strong SOC, assumed to be working in $j$-$j$ coupling regime, 5$d^4$ iridates ar
Externí odkaz:
http://arxiv.org/abs/2107.04431
Unusual spin dynamics in the low-temperature magnetically ordered state of Ag$_{3}$LiIr$_{2}$O$_{6}$
Autor:
Chakraborty, Atasi, Kumar, Vinod, Bachhar, Sanjay, Büttgen, N., Yokoyama, K., Biswas, P. K., Siruguri, V., Pujari, Sumiran, Dasgupta, I., Mahajan, A. V.
Publikováno v:
Phys. Rev. B 104, 115106 (2021)
Recently, there have been contrary claims of Kitaev spin-liquid behaviour and ordered behavior in the honeycomb compound Ag$_3$LiIr$_2$O$_6$ based on various experimental signatures. Our investigations on this system reveal a low-temperature ordered
Externí odkaz:
http://arxiv.org/abs/2104.10057
Autor:
Kundu, S., Shahee, Aga, Chakraborty, Atasi, Ranjith, K. M., Koo, B., Sichelschmidt, Jörg, Telling, Mark T. F., Biswas, P. K., Baenitz, M., Dasgupta, I., Pujari, Sumiran, Mahajan, A. V.
Publikováno v:
Phys. Rev. Lett. 125, 267202 (2020)
We report gapless quantum spin liquid behavior in the layered triangular Sr$_{3}$CuSb$_{2}$O$_{9}$ (SCSO) system. X-ray diffraction shows superlattice reflections associated with atomic site ordering into triangular Cu planes well-separated by Sb pla
Externí odkaz:
http://arxiv.org/abs/2012.01239
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Publikováno v:
Phys. Rev. Lett. 124, 109701 (2020)
The abstract of Phys. Rev. Lett. 121, 157001 (2018) claims to "demonstrate, using ab initio computations, a new trend suggesting that the cuprates with stronger out-of-CuO$_{2}$-plane chemical bonding between the apical anion (O, Cl) and apical catio
Externí odkaz:
http://arxiv.org/abs/1909.09867
Investigation of elementary excitations has advanced our understanding of many-body physics governing most physical properties of matter. Recently spin-orbit excitons have drawn much attention, whose condensates near phase transitions exhibit Higgs m
Externí odkaz:
http://arxiv.org/abs/1906.01262
Autor:
Kumar, R., Dey, Tusharkanti, Ette, P. M., Ramesha, K., Chakraborty, A., Dasgupta, I., Eremina, R., Tóth, Sándor, Shahee, A., Kundu, S., Prinz-Zwick, M., Gippius, A. A., von Nidda, H. A. Krug, Büttgen, N., Gegenwart, P., Mahajan, A. V.
Publikováno v:
Phys. Rev. B 99, 144429 (2019)
The system Ag[Li$_{1/3}$Mn$_{2/3}$]O$_{2}$ belongs to a quaternary 3R-delafossite family and crystallizes in a monoclinic symmetry with space group $C\,2/m$ and the magnetic Mn$^{4+}$($S=3/2$) ions form a honeycomb network in the $ab$-plane. An anoma
Externí odkaz:
http://arxiv.org/abs/1903.08366
Autor:
Kumar, R., Dey, Tusharkanti, Ette, P. M., Ramesha, K., Chakraborty, Atasi, Dasgupta, I., Orain, J. C., Baines, C., Tóth, Sándor, Shahee, A., Kundu, S., Prinz-Zwick, M., Gippius, A. A., Büttgen, N., Gegenwart, P., Mahajan, A. V.
Publikováno v:
Phys. Rev. B 99, 054417 (2019)
We have investigated the thermodynamic and local magnetic properties of the Mott insulating system Ag$_{3}$LiRu$_{2}$O$_{6}$ containing Ru$^{4+}$ (4$d$$^{4}$) for novel magnetism. The material crystallizes in a monoclinic $C2/m$ structure with RuO$_{
Externí odkaz:
http://arxiv.org/abs/1902.01653