Publications by authors named "E V Stepanov"
Article Synopsis
- Understanding the physics of the single-orbital Hubbard model is crucial for grasping how metal-insulator transitions occur in real materials, particularly in the intermediate-coupling regime.
- Recent advanced techniques have helped analyze the spectral function in this intermediate regime, clarifying how antiferromagnetic fluctuations and local electronic correlations contribute to forming an insulating state.
- The study delineates the distinct Slater and Heisenberg regimes of the phase diagram, highlighting a crossover region where competing spatial and local electronic correlations affect the local magnetic moment and the overall insulating state.
Article Synopsis
- Spintronics and orbitronics can benefit from orbital-selective behaviors in correlated electron materials, particularly through phenomena like the orbital-selective Mott state.
- The study investigates the possibility of an orbital-selective Néel transition (OSNT), which involves different magnetic behaviors across orbitals and requires the absence of Hund's exchange coupling.
- Through two-orbital calculations, the research reveals that OSNT can occur across various interaction strengths, with different mechanisms (Slater or Heisenberg) governing the transition depending on the coupling regime.
Objectives: To assess the efficacy and safety of rivaroxaban compared to warfarin after inferior vena cava (IVC) filter implantation.
Method: This retrospective analysis includes data from 100 patients with deep vein thrombosis (DVT) who underwent IVC filter implantation due to a free-floating thrombus (n = 64), thrombus propagation (n = 8), or acute bleeding (n = 8) on therapeutic anticoagulation, catheter-directed thrombolysis (n = 8), or had previously implanted filter with DVT recurrence. Patients were treated with warfarin (n = 41) or rivaroxaban (n = 59) for 3-12 months.
The influence of the carrier-envelope phase (CEP) of a pump pulse on the multioctave supercontinuum (SC) generation in a gas-filled anti-resonant hollow-core fiber (AR HCF) by soliton self-compression (SSC) has been explored. We have shown an octave-wide third harmonic generation (THG) in the visible-to-near-infrared range during the pulse compression down to a sub-cycle duration. The CEP of a multi-cycle pump pulse provides control of interference between the third harmonic (TH) and the SC that indicates the coherent synthesis of a sub-cycle pulse with a duration of about 0.
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- Diabetes increases the risk of ischemic stroke by worsening cerebral damage due to hyperglycemia, though the exact mechanisms are not fully understood.
- This study presents novel findings on the real-time dynamics of hydrogen peroxide (HO) in neuronal mitochondria during ischemic stroke, using advanced technology on both cultured cells and rat brains.
- Results indicate that high blood sugar doesn't impact HO generation in the ischemic area but does worsen the overall effects of the stroke, revealing how elevated glucose levels can alter mitochondrial function in neurons.