TY  - JOUR
AU  - Shukrinov, Yu. M.
AU  - Kovalenko, E.
AU  - Tekić, Jasmina
AU  - Kulikov, K.
AU  - Nashaat, M.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12724
AB  - The unique resonance and locking phenomena in the superconductor-ferromagnet-superconductor φ0 Josephson junction under external electromagnetic radiation are demonstrated when not just the electric but also the magnetic component of external radiation is taken into account. Due to the coupling of superconductivity and magnetism in this system, the magnetic moment precession of the ferromagnetic layer caused by the magnetic component of external radiation can lock the Josephson oscillations, which results in the appearance of a particular type of step in the current-voltage characteristics, completely different from the well-known Shapiro steps. We call these steps the Buzdin steps in the case when the system is driven only by the magnetic component and the chimera steps in the case when both magnetic and electric components are present. Unlike the Shapiro steps where the magnetic moment remains constant along the step, here it changes though the system is locked. The spin-orbit coupling substantially contributes to the amplitude, i.e., the size of these steps. Dramatic changes in their amplitudes are also observed at frequencies near the ferromagnetic resonance. Combinations of the Josephson and Kittel ferromagnetic resonances together with different types of locking pronounced in dynamics and current-voltage characteristics make the physics of this system very interesting and open up a series of new applications.
T2  - Physical Review B
T1  - Buzdin, Shapiro, and chimera steps in                                                                  φ                        0                                                              Josephson junctions
VL  - 109
IS  - 2
SP  - 024511
DO  - 10.1103/PhysRevB.109.024511
ER  - 

@article{
author = "Shukrinov, Yu. M. and Kovalenko, E. and Tekić, Jasmina and Kulikov, K. and Nashaat, M.",
year = "2024",
abstract = "The unique resonance and locking phenomena in the superconductor-ferromagnet-superconductor φ0 Josephson junction under external electromagnetic radiation are demonstrated when not just the electric but also the magnetic component of external radiation is taken into account. Due to the coupling of superconductivity and magnetism in this system, the magnetic moment precession of the ferromagnetic layer caused by the magnetic component of external radiation can lock the Josephson oscillations, which results in the appearance of a particular type of step in the current-voltage characteristics, completely different from the well-known Shapiro steps. We call these steps the Buzdin steps in the case when the system is driven only by the magnetic component and the chimera steps in the case when both magnetic and electric components are present. Unlike the Shapiro steps where the magnetic moment remains constant along the step, here it changes though the system is locked. The spin-orbit coupling substantially contributes to the amplitude, i.e., the size of these steps. Dramatic changes in their amplitudes are also observed at frequencies near the ferromagnetic resonance. Combinations of the Josephson and Kittel ferromagnetic resonances together with different types of locking pronounced in dynamics and current-voltage characteristics make the physics of this system very interesting and open up a series of new applications.",
journal = "Physical Review B",
title = "Buzdin, Shapiro, and chimera steps in                                                                  φ                        0                                                              Josephson junctions",
volume = "109",
number = "2",
pages = "024511",
doi = "10.1103/PhysRevB.109.024511"
}

Shukrinov, Yu. M., Kovalenko, E., Tekić, J., Kulikov, K.,& Nashaat, M.. (2024). Buzdin, Shapiro, and chimera steps in                                                                  φ                        0                                                              Josephson junctions. in Physical Review B, 109(2), 024511.
https://doi.org/10.1103/PhysRevB.109.024511

Shukrinov YM, Kovalenko E, Tekić J, Kulikov K, Nashaat M. Buzdin, Shapiro, and chimera steps in                                                                  φ                        0                                                              Josephson junctions. in Physical Review B. 2024;109(2):024511.
doi:10.1103/PhysRevB.109.024511 .

Shukrinov, Yu. M., Kovalenko, E., Tekić, Jasmina, Kulikov, K., Nashaat, M., "Buzdin, Shapiro, and chimera steps in                                                                  φ                        0                                                              Josephson junctions" in Physical Review B, 109, no. 2 (2024):024511,
https://doi.org/10.1103/PhysRevB.109.024511 . .

TY  - JOUR
AU  - Rahmonov, Ilhom R.
AU  - Tekić, Jasmina
AU  - Mali, Petar
AU  - Irie, Akinobu
AU  - Plecenik, Anrej
AU  - Shukrinov, Yu. M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9634
AB  - The appearance and origin of resonance phenomena are studied in an annular system of underdamped Josephson junctions. If no fluxon is trapped in the system, the dynamics is governed by the motion of fluxon-antifluxon pairs. If, on the other hand, trapped fluxons are present, in addition to their motion, the system can also exhibit the simultaneous motion of trapped fluxons and fluxon-antifluxon pairs. Locking between the rotating excitations (fluxons and antifluxons) and the Josephson frequency leads to the appearance of zero-field steps in the current-voltage characteristics, whose number is determined by the number of junctions and the total number of excitations present in the system. The obtained results clearly show that the branching of zero-field steps due to resonance between the rotating excitations and plasma oscillations in their tails appears only at the lower steps and completely disappears at the higher steps. A comparative analysis between systems without and those with trapped fluxons shows a correlation between their current-voltage characteristics. From a high-resolution analysis some special features of zero-field steps emerge such as an additional branch due to resonance between the pulsating fluxon and the Josephson frequency. Examination of systems with the same number but different types of excitations further reveals that their dynamics is determined not only by the number, but also by the type of excitations, i.e., systems with the same number but different types of excitations have different current-voltage characteristics. © 2020 American Physical Society.
T2  - Physical Review B
T1  - Resonance phenomena in an annular array of underdamped Josephson junctions
VL  - 101
IS  - 17
DO  - 10.1103/PHYSREVB.101.174515
ER  - 

@article{
author = "Rahmonov, Ilhom R. and Tekić, Jasmina and Mali, Petar and Irie, Akinobu and Plecenik, Anrej and Shukrinov, Yu. M.",
year = "2020",
abstract = "The appearance and origin of resonance phenomena are studied in an annular system of underdamped Josephson junctions. If no fluxon is trapped in the system, the dynamics is governed by the motion of fluxon-antifluxon pairs. If, on the other hand, trapped fluxons are present, in addition to their motion, the system can also exhibit the simultaneous motion of trapped fluxons and fluxon-antifluxon pairs. Locking between the rotating excitations (fluxons and antifluxons) and the Josephson frequency leads to the appearance of zero-field steps in the current-voltage characteristics, whose number is determined by the number of junctions and the total number of excitations present in the system. The obtained results clearly show that the branching of zero-field steps due to resonance between the rotating excitations and plasma oscillations in their tails appears only at the lower steps and completely disappears at the higher steps. A comparative analysis between systems without and those with trapped fluxons shows a correlation between their current-voltage characteristics. From a high-resolution analysis some special features of zero-field steps emerge such as an additional branch due to resonance between the pulsating fluxon and the Josephson frequency. Examination of systems with the same number but different types of excitations further reveals that their dynamics is determined not only by the number, but also by the type of excitations, i.e., systems with the same number but different types of excitations have different current-voltage characteristics. © 2020 American Physical Society.",
journal = "Physical Review B",
title = "Resonance phenomena in an annular array of underdamped Josephson junctions",
volume = "101",
number = "17",
doi = "10.1103/PHYSREVB.101.174515"
}

Rahmonov, I. R., Tekić, J., Mali, P., Irie, A., Plecenik, A.,& Shukrinov, Yu. M.. (2020). Resonance phenomena in an annular array of underdamped Josephson junctions. in Physical Review B, 101(17).
https://doi.org/10.1103/PHYSREVB.101.174515

Rahmonov IR, Tekić J, Mali P, Irie A, Plecenik A, Shukrinov YM. Resonance phenomena in an annular array of underdamped Josephson junctions. in Physical Review B. 2020;101(17).
doi:10.1103/PHYSREVB.101.174515 .

Rahmonov, Ilhom R., Tekić, Jasmina, Mali, Petar, Irie, Akinobu, Plecenik, Anrej, Shukrinov, Yu. M., "Resonance phenomena in an annular array of underdamped Josephson junctions" in Physical Review B, 101, no. 17 (2020),
https://doi.org/10.1103/PHYSREVB.101.174515 . .