Real-space density functional theory adapted to cyclic and helical symmetry: application to torsional deformation of carbon nanotubes

A Sharma, P Suryanarayana - Physical Review B, 2021 - APS
We present a cyclic and helical symmetry-adapted formulation and large-scale parallel
implementation of real-space Kohn-Sham density functional theory for one-dimensional (1D) …

Carrier-induced phase transition in metal dichlorides XCl2 (X: Fe, Co, and Ni)

TB Prayitno - Journal of Magnetism and Magnetic Materials, 2021 - Elsevier
We investigated the ground state of monolayer 1T-XCl 2 (X: Fe, Co, and Ni) using the
generalized Bloch theorem, which can generate ferromagnetic, spiral, and antiferromagnetic …

First-principles Study of Spiral Spin Density Waves in Monolayer MnCl2 Using Generalized Bloch Theorem

TB Prayitno, F Ishii - Journal of the Physical Society of Japan, 2019 - journals.jps.jp
We investigated the spiral spin density waves in the monolayer 1T-MnCl2 for a set of spiral
vectors based on first-principles calculations. The magnetic ground states were evaluated by …

Applied electric field on zigzag graphene nanoribbons: reduction of spin stiffness and appearance of spiral spin density waves

TB Prayitno, E Budi - Journal of Physics: Condensed Matter, 2019 - iopscience.iop.org
We investigated the reduction of the spin stiffness and the appearance of the spiral spin
density waves when the electric field is applied on the zigzag graphene nanoribbons for the …

Influence of doping and electric field on magnetism of NiBr2 monolayer: Possible potentiality for multiferroicity and thermoelectricity

TB Prayitno, E Budi, YP Sarwono - Journal of Physics and Chemistry of …, 2024 - Elsevier
We examined the tunable magnetism of nickel dibromide 1T-NiBr 2 monolayer by adjusting
hole− electron doping and electric field. To include the ferromagnetic, antiferromagnetic, and …

Carrier-induced antisymmetric–symmetric tendencies of spin stiffness in zigzag graphene nanoribbons

TB Prayitno, F Ishii - Journal of Physics: Condensed Matter, 2019 - iopscience.iop.org
The generalized Bloch theorem was applied to calculate the spin stiffness and to consider its
tendencies when introducing the doping in zigzag graphene nanoribbons. To reach the …

Controllable magnetic ground states in metal diiodide MI2 (M: Fe, Co, and Ni) monolayers by electric field

TB Prayitno, E Budi, AR Mohmad - Solid State Communications, 2024 - Elsevier
We investigated the controllable magnetic ground states of 1T metal diiodide MI 2 (M: Fe,
Co, and Ni) monolayers by applying the electric field. To do so, we utilized the generalized …

Spin stiffness of bilayer zigzag graphene nanoribbon for several configurations

TB Prayitno - Physica E: Low-dimensional Systems and …, 2020 - Elsevier
The spin stiffness of the bilayer zigzag graphene nanoribbon for several configurations was
obtained by means of the total energy difference of the flat spiral formations within the self …

Electric-field-induced spin spiral state in bilayer zigzag graphene nanoribbons

TB Prayitno - Journal of Physics: Condensed Matter, 2020 - iopscience.iop.org
We investigated the emergence of spin spiral ground state induced by the electric field in the
bilayer zigzag graphene nanoribbons for the ferromagnetic edge states. To do that, we …

First-principles Study of Spin-wave Excitations of 3d Transition Metals with Linear Combination of Pseudo-atomic Orbitals

TB Prayitno, F Ishii - Journal of the Physical Society of Japan, 2019 - journals.jps.jp
We have employed the generalized Bloch theorem to evaluate the spin stiffness constants of
3 d transition metals (bcc-Fe, fcc-Co, and fcc-Ni) within the linear combination of pseudo …