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pro vyhledávání: '"Datta, Sanjoy"'
The Hatano-Nelson (HN) Hamiltonian has played a pivotal role in catalyzing research interest in non-Hermitian systems, primarily because it showcases unique physical phenomena that arise solely due to non-Hermiticity. The non-Hermiticity in the HN Ha
Externí odkaz:
http://arxiv.org/abs/2409.04417
Autor:
Chakrabarty, Aditi, Datta, Sanjoy
One of the most striking features of non-Hermitian quasiperiodic systems with arbitrarily small asymmetry in the hopping amplitudes and open boundaries is the accumulation of all the bulk eigenstates at one of the edges of the system, termed in liter
Externí odkaz:
http://arxiv.org/abs/2404.12297
Autor:
Bhattacharya, Sanchari, Datta, Sanjoy
Publikováno v:
J. Phys.: Condens. Matter 36 (2024) 405701 (10pp)
In this study, we employ density functional theory (DFT) based first-principles calculations to investigate the spin-orbit effects in the electronic structure of a polar-nonpolar sandwich heterostructure namely LAO$_{2.5}$/STO$_{5.5}$/LAO$_{2.5}$. Ou
Externí odkaz:
http://arxiv.org/abs/2311.14787
Autor:
Acharya, Aruna Prasad, Datta, Sanjoy
The delocalization-localization (DL) transition in non-Hermitian systems exhibits intriguing features distinct from their Hermitian counterparts. In this study, we investigate the DL transition in a generalized non-Hermitian lattice with asymmetric h
Externí odkaz:
http://arxiv.org/abs/2306.09036
Autor:
Datta, Sanjoy1 sdatta@utb.cz, Peter, Ondřej1,2, Harea, Evghenii1, Stoček, Radek1, Naskar, Kinsuk
Publikováno v:
Express Polymer Letters. Sep2024, Vol. 18 Issue 9, p911-920. 10p.
Autor:
Bhattacharya, Sanchari, Datta, Sanjoy
Publikováno v:
J. Phys.: Condens. Matter 35 (2023) 205501 (12pp)
The LaAlO3/KTaO3 system serves as a prototype to study the electronic properties that emerge as a result of spin-orbit coupling. In this article, we have used first-principles calculations to systematically study two types of defect-free (0 0 1) inte
Externí odkaz:
http://arxiv.org/abs/2210.03722
Autor:
Chakrabarty, Aditi, Datta, Sanjoy
The investigations of the spectral and dynamical delocalization-localization (DL) transition have revealed intriguing features in a wide range of non-Hermitian systems. The present study aims at exploring the spectral and dynamical properties in a no
Externí odkaz:
http://arxiv.org/abs/2208.10359
Autor:
Sahu, Deepak Kumar, Datta, Sanjoy
In the one-dimensional quasiperiodic Aubry-Andr\'{e}-Harper Hamiltonian with nearest-neighbor hopping, all single-particle eigenstates undergo a phase transition from ergodic to localized states at a critical disorder strength $W_c/t = 2.0$. There is
Externí odkaz:
http://arxiv.org/abs/2205.11305
Autor:
Jena, Soumyasree, Datta, Sanjoy
The electronic structure and thermodynamic stability of tetragonal $\rm{BiFeO_3}$(001) surfaces have been investigated using density functional theory. In this work, four different structures having different lattice constants with two possible surfa
Externí odkaz:
http://arxiv.org/abs/2205.06201
Publikováno v:
Computational Materials Science 204 (2022) 111107
$\text{BiFeO}_\text{3}$ has drawn a great attention over last several decades due to its promising multiferroic character. In the ground state the bulk $\text{BiFeO}_\text{3}$ is found to be in the rhombohedral phase. However, it has been possible to
Externí odkaz:
http://arxiv.org/abs/2109.03886