Ivan Sadovskyy
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View article: InAs-Al hybrid devices passing the topological gap protocol
InAs-Al hybrid devices passing the topological gap protocol Open
Topological phases of matter can enable highly stable qubits with small footprints, fast gate times, and digital control. These hardware-protected qubits must be fabricated with a material combination in which a topological phase can relia…
View article: InAs-Al Hybrid Devices Passing the Topological Gap Protocol
InAs-Al Hybrid Devices Passing the Topological Gap Protocol Open
We present measurements and simulations of semiconductor-superconductor heterostructure devices that are consistent with the observation of topological superconductivity and Majorana zero modes. The devices are fabricated from high-mobilit…
View article: First principles supercurrent calculation in realistic magnetic Josephson junctions
First principles supercurrent calculation in realistic magnetic Josephson junctions Open
We investigate the transport properties of magnetic Josephson junctions. In order to capture realistic material band structure effects, we develop a numerical method combining density functional theory and Bogoliubov-de Gennes model. We de…
View article: Targeted evolution of pinning landscapes for large superconducting critical currents
Targeted evolution of pinning landscapes for large superconducting critical currents Open
Significance Lossless transport is the Holy Grail of energy science in general and superconductivity research in particular. The main obstacle is the dissipative motion of Abrikosov vortices, which can be reduced or eliminated by pinning a…
View article: Peak effect due to competing vortex ground states in superconductors with large inclusions
Peak effect due to competing vortex ground states in superconductors with large inclusions Open
Superconductors can support large dissipation-free electrical currents only\nif vortex lines are effectively immobilized by material defects. Macroscopic\ncritical currents depend on elemental interactions of vortices with individual\npinn…
View article: H-theorem and Maxwell demon in quantum physics
H-theorem and Maxwell demon in quantum physics Open
The Second Law of Thermodynamics states that temporal evolution of an isolated system occurs with non-diminishing entropy. In quantum realm, this holds for energy-isolated systems the evolution of which is described by the so-called unital…
View article: Arrow of time and its reversal on IBM quantum computer
Arrow of time and its reversal on IBM quantum computer Open
Uncovering the origin of the arrow of time remains a fundamental scientific challenge. Within the framework of statistical physics, this problem was inextricably associated with the second law of thermodynamics, which declares that entropy…
View article: Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors
Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors Open
The current-carrying capacity of type-II superconductors is decisively determined by how well material defect structures can immobilize vortex lines. In order to gain deeper insights into intrinsic pinning mechanisms, we have explored the …
View article: Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors
Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors Open
The current-carrying capacity of type-II superconductors is decisively determined by how well material defect structures can immobilize vortex lines. In order to gain deeper insights into the fundamental pinning mechanisms, we have explore…
View article: <i>In silico</i> optimization of critical currents in superconductors
<i>In silico</i> optimization of critical currents in superconductors Open
For many technological applications of superconductors the performance of a material is determined by the highest current it can carry losslessly-the critical current. In turn, the critical current can be controlled by adding nonsupercondu…
View article: Laser-induced micropore formation and modification of cartilage structure in osteoarthritis healing
Laser-induced micropore formation and modification of cartilage structure in osteoarthritis healing Open
Pores are vital for functioning of avascular tissues. Laser-induced pores play an important role in the process of cartilage regeneration. The aim of any treatment for osteoarthritis is to repair hyaline-type cartilage. The aims of this st…
View article: Effect of hexagonal patterned arrays and defect geometry on the critical current of superconducting films
Effect of hexagonal patterned arrays and defect geometry on the critical current of superconducting films Open
Understanding the effect of pinning on the vortex dynamics in superconductors is a key factor towards controlling critical current values. Large-scale simulations of vortex dynamics can provide a rational approach to achieve this goal. Her…
View article: Effect of hexagonal patterned arrays and defect geometry on the critical current of superconducting films
Effect of hexagonal patterned arrays and defect geometry on the critical current of superconducting films Open
Understanding the effect of pinning on the vortex dynamics in superconductors is a key factor towards controlling critical current values. Large-scale simulations of vortex dynamics can provide a rational approach to achieve this goal. Her…
View article: Toward Superconducting Critical Current by Design
Toward Superconducting Critical Current by Design Open
A new critical-current-by-design paradigm is presented. It aims at predicting the optimal defect landscape in superconductors for targeted applications by elucidating the vortex dynamics responsible for the bulk critical current. To this e…
View article: Optimization of vortex pinning by nanoparticles using simulations of the time-dependent Ginzburg-Landau model
Optimization of vortex pinning by nanoparticles using simulations of the time-dependent Ginzburg-Landau model Open
Introducing nanoparticles into superconducting materials has emerged as an efficient route to enhance their current-carrying capability. We address the problem of optimizing vortex pinning landscape for randomly distributed metallic spheri…
View article: Charge States in Andreev Quantum Dots
Charge States in Andreev Quantum Dots Open
We study the charge states in Andreev quantum dot, the metallic quantum dot coupled to the superconducting ring.We show that breaking the electron-hole symmetry in a superconductor generates non-integer charge, localized in a metallic part…
View article: Simulation of the vortex dynamics in a real pinning landscape of YBa$_2$Cu$_3$O$_{7-δ}$ coated conductors
Simulation of the vortex dynamics in a real pinning landscape of YBa$_2$Cu$_3$O$_{7-δ}$ coated conductors Open
The ability of high-temperature superconductors (HTSs) to carry very large currents with almost no dissipation makes them irreplaceable for high-power applications. The development and further improvement of HTS-based cables requires an in…