Dmytro Bozhko
University of Colorado Colorado Springs, CO·Physics·Early-career
Under the right conditions, many separate particles can fall into a single shared quantum state and behave as one coherent wave. This is called Bose-Einstein condensation (BEC).
- Fields
Physics
Materials Science
Engineering
- Topics
magnons
spin waves
Bose-Einstein condensation
- Grants
- 1 known grant, through Jan 2029
What they work on
- Observe and compare magnon Bose-Einstein condensate dynamics in 3D, quasi-2D and quasi-1D ferromagnetic structures, using nanofabricated samples and Brillouin light scattering spectroscopy, to find the critical sizes that support a condensate.
- Create a persistent magnon condensed phase and map the conditions where it exists, using optical heating at room and cryogenic temperatures.
- Study magnon condensates in ring-shaped samples with periodic boundaries, and build a joint model of magnon second sound and Bogoliubov waves in continuous and confined samples.
- Experimentally observe and characterize the magnon thermodynamic lasing effect in ferromagnetic structures.
More about the research
It can occur not only in atoms but also in magnons, which are ripples in the alignment of magnetic spins inside a magnet that act like particles. Earlier research has seen magnon condensates carry 'supercurrents', which flow without loss. Researchers have also seen Bogoliubov waves (sound-like ripples in a condensate), the Josephson effect (current flow between two linked condensates) and second sound (heat that travels as a wave). Still, basic questions remain open. How do walls and narrow geometries change a magnon condensate? And how small can a magnetic sample be before the condensate can no longer form?
Why it matters
Magnon condensates are a room-temperature-accessible quantum system. Learning how confinement and sample size control them could inform future quantum information and magnetic technologies built on small magnetic structures. The work mainly adds basic understanding of how coherent quantum states form and behave in solid magnets.
Known grants
From NIH and NSF research grants. Labs often have other funding we can't see.
Closest labs
Joseph Sklenar
Wayne State University, MI·Physics
Synthesize synthetic antiferromagnets by sputter deposition, varying the number of ferromagnetic layers and the non-magnetic spacer material, to excite magnons (spin waves) and create magnon-magnon interactions.
Julius De Rojas
Oklahoma State University, OK·Physics
Establish how voltage-driven migration of oxygen and lithium ions (magneto-ionics) changes spin-wave behavior in magnetic thin films, producing large changes that persist without power, measured with Brillouin light scattering and ferromagnetic resonance.
Panayotis Kevrekidis
University of Massachusetts, MA·Mathematics & Statistics
Develop reduced, lower-dimensional evolution equations for vortices and soliton filaments in Bose-Einstein condensates, and test them against numerical computations of the full models.
The school
University of Colorado Colorado Springs: 1 labs on PI Pages, $8M a year on research, 47 research doctorates a year.
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