TY  - JOUR
AU  - Tahir, Muhammad
AU  - Krstajić, Predrag
AU  - Vasilopoulos, Panagiotis
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3974
AB  - The multilayer band structure of black phosphorus (BP) is highly anisotropic, and its bandgap is tunable by applying a perpendicular electric field Ez . Within a linear response theory, we study dc and ac transport in few-layer BP, as functions of the Fermi energy, temperature, or frequency,
in the presence of a Zeeman field. The current response to an in-plane electric field along two perpendicular directions is anisotropic and reflects that of the energy spectrum. In addition, we study the Hall conductivity and power absorption spectrum. The Hall
conductivity vanishes, but the power spectrum P(ω) shows a considerable structure as a function of the normalized frequency α/hω=2Δ and/or of the bandgap 2Δ tuned by Ez. In particular, a clear maximum occurs in the difference between spin-up and spin-down contributions
to P(ω). When potassium (K) atoms are deposited on top of BP, the anisotropy in the current response is stronger and the power spectrum is further modified. The results may be pertinent to the development of phosphorene-based applications.
PB  - American Institute of Physics (AIP Publishing)
T2  - Journal of Applied Physics
T1  - dc and ac transport in few-layer black phosphorus
VL  - 127
SP  - 044302
DO  - 10.1063/1.5129273
ER  - 

@article{
author = "Tahir, Muhammad and Krstajić, Predrag and Vasilopoulos, Panagiotis",
year = "2020",
abstract = "The multilayer band structure of black phosphorus (BP) is highly anisotropic, and its bandgap is tunable by applying a perpendicular electric field Ez . Within a linear response theory, we study dc and ac transport in few-layer BP, as functions of the Fermi energy, temperature, or frequency,
in the presence of a Zeeman field. The current response to an in-plane electric field along two perpendicular directions is anisotropic and reflects that of the energy spectrum. In addition, we study the Hall conductivity and power absorption spectrum. The Hall
conductivity vanishes, but the power spectrum P(ω) shows a considerable structure as a function of the normalized frequency α/hω=2Δ and/or of the bandgap 2Δ tuned by Ez. In particular, a clear maximum occurs in the difference between spin-up and spin-down contributions
to P(ω). When potassium (K) atoms are deposited on top of BP, the anisotropy in the current response is stronger and the power spectrum is further modified. The results may be pertinent to the development of phosphorene-based applications.",
publisher = "American Institute of Physics (AIP Publishing)",
journal = "Journal of Applied Physics",
title = "dc and ac transport in few-layer black phosphorus",
volume = "127",
pages = "044302",
doi = "10.1063/1.5129273"
}

Tahir, M., Krstajić, P.,& Vasilopoulos, P.. (2020). dc and ac transport in few-layer black phosphorus. in Journal of Applied Physics
American Institute of Physics (AIP Publishing)., 127, 044302.
https://doi.org/10.1063/1.5129273

Tahir M, Krstajić P, Vasilopoulos P. dc and ac transport in few-layer black phosphorus. in Journal of Applied Physics. 2020;127:044302.
doi:10.1063/1.5129273 .

Tahir, Muhammad, Krstajić, Predrag, Vasilopoulos, Panagiotis, "dc and ac transport in few-layer black phosphorus" in Journal of Applied Physics, 127 (2020):044302,
https://doi.org/10.1063/1.5129273 . .

TY  - JOUR
AU  - Tahir, Muhammad
AU  - Krstajić, Predrag
AU  - Vasilopoulos, Panagiotis
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2418
AB  - We investigate quantum transport in a bilayer WSe2 in the presence of an external potential V and interlayer coupling. The dc and ac conductivities are evaluated in the framework of linear response theory. As functions of the Fermi energy, the dc ones exhibit a nonmonotonic behavior with a flat region in the band gap. A deep local minimum is visible in spin-Hall conductivity near the top of the valence band as a consequence of a large valence band splitting. On the other hand, the ac spin- and valley-Hall conductivities, as functions of the frequency, show two opposite peaks near the top of the valence band. The spin-Hall conductivity exhibits a minimum value at V = 0 whereas the valley-Hall conductivity decreases monotonically upon varying V from negative to positive values. Furthermore, we evaluate the power absorption spectrum and assess its dependence on the spin and valley degrees of freedom. The results are pertinent to the development of electrically controlled spintronic and valleytronic devices based on bilayer WSe2 and other group VI semiconductors.
PB  - American Physical Society (APS)
T2  - Physical Review B
T1  - Electrically controlled dc and ac transport in bilayer WSe2
VL  - 98
IS  - 7
SP  - 075429
DO  - 10.1103/PhysRevB.98.075429
ER  - 

@article{
author = "Tahir, Muhammad and Krstajić, Predrag and Vasilopoulos, Panagiotis",
year = "2018",
abstract = "We investigate quantum transport in a bilayer WSe2 in the presence of an external potential V and interlayer coupling. The dc and ac conductivities are evaluated in the framework of linear response theory. As functions of the Fermi energy, the dc ones exhibit a nonmonotonic behavior with a flat region in the band gap. A deep local minimum is visible in spin-Hall conductivity near the top of the valence band as a consequence of a large valence band splitting. On the other hand, the ac spin- and valley-Hall conductivities, as functions of the frequency, show two opposite peaks near the top of the valence band. The spin-Hall conductivity exhibits a minimum value at V = 0 whereas the valley-Hall conductivity decreases monotonically upon varying V from negative to positive values. Furthermore, we evaluate the power absorption spectrum and assess its dependence on the spin and valley degrees of freedom. The results are pertinent to the development of electrically controlled spintronic and valleytronic devices based on bilayer WSe2 and other group VI semiconductors.",
publisher = "American Physical Society (APS)",
journal = "Physical Review B",
title = "Electrically controlled dc and ac transport in bilayer WSe2",
volume = "98",
number = "7",
pages = "075429",
doi = "10.1103/PhysRevB.98.075429"
}

Tahir, M., Krstajić, P.,& Vasilopoulos, P.. (2018). Electrically controlled dc and ac transport in bilayer WSe2. in Physical Review B
American Physical Society (APS)., 98(7), 075429.
https://doi.org/10.1103/PhysRevB.98.075429

Tahir M, Krstajić P, Vasilopoulos P. Electrically controlled dc and ac transport in bilayer WSe2. in Physical Review B. 2018;98(7):075429.
doi:10.1103/PhysRevB.98.075429 .

Tahir, Muhammad, Krstajić, Predrag, Vasilopoulos, Panagiotis, "Electrically controlled dc and ac transport in bilayer WSe2" in Physical Review B, 98, no. 7 (2018):075429,
https://doi.org/10.1103/PhysRevB.98.075429 . .