Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Pandey, Bradraj"'
Autor:
Laurell, Pontus, Pandey, Bradraj, Halász, Gábor B., Okamoto, Satoshi, Alvarez, Gonzalo, Dagotto, Elbio
We study the impact of hole-doping on the Kitaev-Heisenberg model on the honeycomb lattice. We investigate the pairing tendencies and correlation functions in the framework of a $t-J-K$ model using density matrix renormalization group calculations on
Externí odkaz:
http://arxiv.org/abs/2409.04389
Autor:
Pandey, Bradraj, Dagotto, Elbio
Motivated by the recent experimental realization of a minimal Kitaev chain in quantum dot systems, we present our theoretical findings on the dynamics and fusion of MZMs at or near the $``$sweet spot" $t_h = \Delta$ (where the fermionic hopping $t_h$
Externí odkaz:
http://arxiv.org/abs/2407.20783
We propose a minimalist architecture for achieving various crystalline-symmetry-protected Majorana modes in an array of coupled quantum dots. Our framework is motivated by the recent experimental demonstrations of two-site and three-site artificial K
Externí odkaz:
http://arxiv.org/abs/2407.00158
Motivated by recent experimental reports of Majorana zero modes (MZMs) in quantum-dot systems at the ``sweet spot'', where the electronic hopping $t_h$ is equal to the superconducting coupling $\Delta$, we study the time-dependent spectroscopy corres
Externí odkaz:
http://arxiv.org/abs/2311.15079
Publikováno v:
npj Quantum Mater. 8, 51 (2023)
Motivated by the recent experimental realization of minimal Kitaev chains using quantum dots, we investigate the Majorana zero modes (MZM) in $Y$-shape Kitaev wires. We solve the associated Kitaev models analytically at the sweet spot ($t_h=\Delta$)
Externí odkaz:
http://arxiv.org/abs/2306.04081
Publikováno v:
Phys. Rev. B 107, L060304 (2023)
We employ a time-dependent real-space local density-of-states method to study the movement and fusion of Majorana zero modes in the 1D interacting Kitaev model, based on the time evolution of many-body states. We analyze the dynamics and both fusion
Externí odkaz:
http://arxiv.org/abs/2209.07913
Publikováno v:
Phys. Rev. B 104, L220302 (2021)
Motivated by experimental developments introducing the concept of spin-orbit separation, we study the real-space time evolution of an excitonic wave-packet using a two-orbital Hubbard model. The exciton is created by exciting an electron from a lower
Externí odkaz:
http://arxiv.org/abs/2109.03618
Publikováno v:
Phys. Rev. B 103, 214513 (2021)
Motivated by recent experimental progress on iron-based ladder compounds, we study the doped two-orbital Hubbard model for the two-leg ladder BaFe$_2$S$_3$. The model is constructed by using {\it ab initio} hopping parameters and the ground state pro
Externí odkaz:
http://arxiv.org/abs/2103.06407
Autor:
Pandey, Bradraj, Zhang, Yang, Kaushal, Nitin, Soni, Rahul, Lin, Ling-Fang, Hu, Wen-Jun, Alvarez, Gonzalo, Dagotto, Elbio
Publikováno v:
Phys. Rev. B 103, 045115 (2021)
Motivated by recent experimental progress in transition metal oxides with the K$_2$NiF$_4$ structure, we investigate the magnetic and orbital ordering in $\alpha$-Sr$_2$CrO$_4$. Using first principles calculations, first we derive a three-orbital Hub
Externí odkaz:
http://arxiv.org/abs/2010.10342
Autor:
Pandey, Bradraj, Lin, Ling-Fang, Soni, Rahul, Kaushal, Nitin, Herbrych, Jacek, Alvarez, Gonzalo, Dagotto, Elbio
Publikováno v:
Phys. Rev. B 102, 035149 (2020)
The magnetic and electronic phase diagram of a model for the quasi-one-dimensional alkali metal iron selenide compound Na$_2$FeSe$_2$ is presented. The novelty of this material is that the valence of iron is Fe$^{2+}$ contrary to most other iron-chai
Externí odkaz:
http://arxiv.org/abs/2005.13132