14 citations · 52 across the 11 of their papers we have counts for
11 papers
In-situ tunable superconducting diode: towards field-free operation with infinite nonreciprocity
Razmik A. Hovhannisyan, Taras Golod, Amirreza Lotfian +1
Efficient, scalable, and magnetic-field-free superconducting diodes are essential for future superconducting electronics; yet, despite significant efforts, such practical devices r…
Demonstration of an optical microwave rectification by a superconducting diode with near 100% efficiency
Razmik A. Hovhannisyan, Amirreza Lotfian, Taras Golod +1
Superconducting electronics offer significant advantages in speed and power efficiency for next-generation computing and communication systems. However, their practical deployment…
Magnetic force microscopy versus scanning quantum-vortex microscopy: Probing pinning landscape in granular niobium films
A. Yu. Aladyshkin, R. A. Hovhannisyan, S. Yu. Grebenchuk +7
We provide an overview of the methodology and fundamental principles associated with newly developed experimental technique -- scanning quantum-vortex microscopy [Hovhannisyan et a…
Numerical modelling of a vortex-based superconducting memory cell: dynamics and geometrical optimization of a fluxonic quantum dot
Aiste Skog, Razmik A. Hovhannisyan, Vladimir M. Krasnov
The lack of dense random-access memory is one of the main obstacles to the development of digital superconducting computers. It has been suggested that AVRAM cells, based on the st…
Scanning quantum vortex microscopy reveals thickness-dependent pinning nano-network in superconducting Nb-films
Razmik A. Hovhannisyan, Sergey Yu. Grebenchuk, Andrey G. Shishkin +10
The presence of quantum vortices determines the electromagnetic response of superconducting materials and devices. Controlling the vortex motion, their pinning on intrinsic and art…
Revealing intrinsic superconductivity of the Nb/BiSbTeSe interface
Andrei Kudriashov, Ian Babich, Razmik A. Hovhannisyan +7
Typically, topological superconductivity is reachable via proximity effect by a direct deposition of superconductor (S) on top of a topological insulator (TI) surface. Here we obse…
Holographic reconstruction of magnetic field distribution in a Josephson junction from diffraction-like Ic(H) patterns
Razmik A. Hovhannisyan, Taras Golod, Vladimir M. Krasnov
A general problem of magnetic sensors is a trade-off between spatial resolution and magnetic field sensitivity. With decreasing sensor size its resolution is improved but the sensi…
Revealing Josephson vortex dynamics in proximity junctions below critical current
Vasily S. Stolyarov, Vsevolod Ruzhitskiy, Razmik A. Hovhannisyan +9
Made of a thin non-superconducting metal (N) sandwiched by two superconductors (S), SNS Josephson junctions enable novel quantum functionalities by mixing up the intrinsic electron…
Lateral Josephson Junctions as Sensors for Magnetic Microscopy at Nano-Scale
azmik A. Hovhannisyan, Sergey Yu. Grebenchuk, Denis S. Baranov +2
Lateral Josephson junctions (LJJ) made of two superconducting Nb electrodes coupled by Cu-film are applied to quantify the stray magnetic field of Co-coated cantilevers used in Mag…
Accurate determination of the Josephson critical current by lock-in measurements
Razmik A. Hovhannisyan, Olena M. Kapran, Taras Golod +1
Operation of Josephson electronics usually requires determination of the Josephson critical current , which is affected both by fluctuations and measurement noise. Lock-in mea…
Interplay of magnetization dynamics with microwave waveguide at cryogenic temperatures
I. A. Golovchanskiy, N. N. Abramov, M. Pfirrmann +10
In this work, magnetization dynamics is studied at low temperatures in a hybrid system that consists of thin epitaxial magnetic film coupled with superconducting planar microwave w…