109 citations · 344 across the 16 of their papers we have counts for
12 papers · 1 filter
Phonon and magnon jets above the critical current in nanowires with planar domain walls
Maria Stamenova, Plamen Stamenov, Tchavdar Todorov
We show through non-equilibrium non-adiabatic electron-spin-lattice simulations that above a critical current in magnetic atomic wires with a narrow domain wall (DW), a couple of a…
Ab initio comparison of spin-transport properties in MgO-spaced ferrimagnetic tunnel junctions based on MnGa and MnAl
Maria Stamenova, Plamen Stamenov, Nadjib Baadji
We report on first-principles spin-polarised quantum transport calculations (from NEGF+DFT) in MgO-spaced magnetic tunnel junctions (MTJs) based on two different Mn-based Heusler f…
Spin transfer torque in MnGa-based ferrimagnetic tunnel junctions from first principles
Maria Stamenova, Plamen Stamenov, Farzad Mahfouzi +3
We report on first-principles calculations of spin-transfer torque (STT) in epitaxial magnetic tunnel junctions (MTJs) based on ferrimagnetic tetragonal MnGa electrodes, both a…
Multi-scale modelling of current-induced switching in magnetic tunnel junctions using ab initio spin transfer torques
Matthew O. A. Ellis, Maria Stamenova, Stefano Sanvito
There exists a significant challenge in developing efficient magnetic tunnel junctions with low write currents for non-volatile memory devices. With the aim of analysing potential…
Ab initio dynamical exchange interactions in frustrated anti-ferromagnets
Jacopo Simoni, Maria Stamenova, Stefano Sanvito
The ultrafast response to an optical pulse excitation of the spin-spin exchange interaction in transition metal anti-ferromagnets is studied within the framework of the time-depend…
Theoretical evaluation of [V(α-CS)] as nuclear-spin sensitive single-molecule spin transistor
Salvador Cardona-Serra, Alejandro Gaita-Ariño, Maria Stamenova +1
In a straightforward application of molecular nanospintronics to quantum computing, single-molecule spin transistors can be used to measure and control nuclear spin qubits. A jump…
First-principles spin-transfer torque in CuMnAsGaPCuMnAs junctions
Maria Stamenova, Razie Mohebbi, Jamileh Seyedyazdi +2
We demonstrate that an all-antiferromagnetic tunnel junction with current perpendicular to the plane geometry can be used as an efficient spintronics device with potential high fre…
Non-equilibrium magnetic fields in ab initio spin dynamics
Jacopo Simoni, Maria Stamenova, Stefano Sanvito
Starting from the continuity equation for the magnetization in time-dependent spin-density functional theory, we derive an expression for the effective time-dependent magnetic fiel…
The role of spin-orbit interaction in the ultrafast demagnetization of small iron clusters
Maria Stamenova, Jacopo Simoni, Stefano Sanvito
The ultra-fast demagnetization of small iron clusters initiated by an intense optical excitation is studied with time-dependent spin density functional theory (TDSDFT). In particul…
Electrical control of spin dynamics in finite one-dimensional systems
Anna Pertsova, Maria Stamenova, Stefano Sanvito
We investigate the possibility of the electrical control of spin transfer in monoatomic chains incorporating spin-impurities. Our theoretical framework is the mixed quantum-classic…
Magneto-mechanical interplay in spin-polarized point contacts
Maria Stamenova, Sudhakar Sahoo, Cristian G. Sanchez +2
We investigate the interplay between magnetic and structural dynamics in ferromagnetic atomic point contacts. In particular, we look at the effect of the atomic relaxation on the e…
Current-driven magnetic rearrangements in spin-polarized point contacts
Maria Stamenova, Stefano Sanvito, Tchavdar N. Todorov
A new method for investigating the dynamics of atomic magnetic moments in current-carrying magnetic point contacts under bias is presented. This combines the non-equilibrium Green'…