Vladyslav Kozii
Carnegie Mellon University, PA·Physics·Early-career
Superconductors carry electricity with zero resistance. They make possible MRI magnets, particle accelerators and maglev trains, and they are a promising basis for quantum computing.
- Fields
Physics
- Topics
superconductivity
low carrier density
strongly correlated electrons
- Grants
- 1 known grant, through May 2031
What they work on
- Develop and analyze theoretical pairing mechanisms for superconductors with very low electron density, determining when superconductivity can survive as carrier density approaches zero.
- Determine how strong electron-electron (Coulomb) repulsion promotes or suppresses superconductivity, and identify routes to topological superconducting states.
- Calculate penetration depth, specific heat, upper critical field and collective modes versus temperature, field and density, then compare with experimental data to rule out competing pairing mechanisms.
More about the research
The standard theory, Bardeen-Cooper-Schrieffer (BCS) theory, explains superconductivity as electrons forming pairs. Many known superconductors, however, defy this explanation. Some exist with very few mobile electrons, or with strong repulsion between electrons, conditions that should prevent pairing. Others have unusual 'topological' electronic structure. How these materials superconduct is largely unknown.
Why it matters
Understanding how superconductivity arises in materials where standard theory says it should not could guide the search for new superconducting phases. It could also clarify how exotic superconducting states might be engineered or controlled. This knowledge may eventually inform technologies such as quantum computing. It may also shed light on related systems, possibly including high-temperature superconductors.
Known grants
From NIH and NSF research grants. Labs often have other funding we can't see.
Closest labs
Heike Pfau
Pennsylvania State University, PA·Physics·Early-career
Use uniaxial pressure cells to strain unconventional superconductors and measure their changing electronic structure with angle-resolved photoemission spectroscopy (ARPES), to uncover the interactions that cause electrons to pair.
Kenneth Burch
Boston College, MA·Physics
Determine whether the boundary mode observed in FeTeSe superconductors reflects true topological order by systematically varying device configurations and material parameters.
Qimiao Si
Rice University, TX·Physics
Analyze quantum criticality in heavy fermion metals, where electrons behave as if very heavy, focusing on new regimes marked by singular charge responses near zero-temperature phase transitions.
The school
Carnegie Mellon University: 28 labs on PI Pages, $505M a year on research, 346 research doctorates a year.
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