Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Makhfudz, Imam"'
Autor:
Makhfudz, Imam, Esmaielpour, Hamidreza, Hajati, Yaser, Koblmüller, Gregor, Cavassilas, Nicolas
Publikováno v:
Phys. Rev. B 110, L121302 (2024)
Hot carrier effect, a phenomenon where charge carriers generated by photon absorption remain energetic by not losing much energy, has been one of the leading strategies in increasing solar cell efficiency. Nanostructuring offers an effective approach
Externí odkaz:
http://arxiv.org/abs/2409.11544
Autor:
Makhfudz, Imam, Cherkasskii, Mikhail, Lombardo, Pierre, Schäfer, Steffen, Kusminskiy, Silvia Viola, Hayn, Roland
Inspired by the discovery of metal-organic frameworks, the possibility of quantum anomalous Hall effect (QAHE) in two-dimensional kagome systems with $d$-orbital electrons is studied within a multi-orbital tight-binding model. In the absence of excha
Externí odkaz:
http://arxiv.org/abs/2402.05845
Autor:
Hong, Tao, Makhfudz, Imam, Ke, Xianglin, May, Andrew F., Podlesnyak, Andrey A., Pajerowski, Daniel, Winn, Barry, Deumal, Merce, Takano, Yasumasa, Turnbull, Mark M.
Topological phases of matter are beyond the paradigm of Landau's symmetry breaking and have challenged our understanding of condensed matter systems. Here we report a new type of symmetry-protected topological phase of matter in the spin-1/2 coupled
Externí odkaz:
http://arxiv.org/abs/2306.06021
Autor:
Makhfudz, Imam, Cavassilas, Nicolas, Hajati, Yaser, Esmaielpour, Hamidreza, Michelini, Fabienne
Publikováno v:
Phys. Rev. Applied 19, 044002 (2023)
Carrier thermalization in a superlattice solar cell made of polar semiconductors is studied theoretically by considering a minimal model where electron-phonon scattering is the principal channel of carrier energy loss. Importantly, the effect of an i
Externí odkaz:
http://arxiv.org/abs/2212.03618
Autor:
Makhfudz, Imam, Cavassilas, Nicolas, Giteau, Maxime, Esmaielpour, Hamidreza, Suchet, Daniel, Daré, Anne-Marie, Michelini, Fabienne
Publikováno v:
J. Phys. D: Appl. Phys. (2022)
A theoretical model using electron-phonon scattering rate equations is developed for assessing carrier thermalization under steady-state conditions in two-dimensional systems. The model is applied to investigate the hot carrier effect in III-V hot-ca
Externí odkaz:
http://arxiv.org/abs/2209.13218
Publikováno v:
Appl. Phys. Lett. 117, 132403 (2020)
At short time scales the inertia term becomes relevant for the magnetization dynamics of ferromagnets and leads to nutation for the magnetization vector. For the case of spatially extended magnetic systems, for instance Heisenberg spin chains with is
Externí odkaz:
http://arxiv.org/abs/1910.11897
Autor:
Makhfudz, Imam
Publikováno v:
Europhysics Letters 123, 67002 (2018)
Quantum spin ice in pyrochlore lattice exemplifies three dimensional frustrated spin systems.In existing studies, Bose-Einstein condensation of bosonic spinons gives rise to magnetically ordered ground state.A truly liquid quantum spin superfluid sta
Externí odkaz:
http://arxiv.org/abs/1801.01995
Autor:
Makhfudz, Imam
Publikováno v:
Journal of Physics: Condensed Matter 30, 225801 (2018)
We propose in this work an effective field theory description of the chiral spin liquid state in Heisenberg spin system on kagom\'e lattice.To this end, we derive the low-energy effective theory of kagom\'e (isotropic) Heisenberg antiferromagnet arou
Externí odkaz:
http://arxiv.org/abs/1703.10397
Autor:
Makhfudz, Imam
Publikováno v:
Scientific Reports 8, 6719 (2018)
Weyl semimetal, a three-dimensional electronic system with relativistic linear energy dispersion around gapless points carrying nontrivial Berry charge, is predicted to exhibit a wealth of unique response and transport properties.A crucial question i
Externí odkaz:
http://arxiv.org/abs/1608.07194
We propose a simple model consisting of a magnetic domain wall proximity-coupled to an $s$-wave superconductor for realization of Majorana zero-energy modes. A spin-dependent gauge transformation translates the rotating magnetic profile through the d
Externí odkaz:
http://arxiv.org/abs/1603.07315