Theory of Condensed Matter
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Rafi Bistritzer
Tel-Aviv University
Two-dimensional van-der Waals materials are a playground for fascinating quantum phenomena, offering new ways to tackle long standing mysteries in condensed matter physics. Our group develops theoretical models that leverage the extraordinary diversity and tunability of these systems to deepen our understanding of solid-state physics.
Superlattices
Natural crystals have fixed, atomic-scale lattices. Advances in materials science now let us design artificial superlattices with tunable, larger, even dynamic periodicities. These engineered lattices open new frontiers in correlated and topological quantum phenomena.
Acoustoelectric superlattices
We envision moving, tunable periodic potentials as a platform for exploring new regimes of electronic behavior:
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Real-time band-structure control
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Lattice constants ranging from tens to hundreds of nanometers
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Dense flat bands
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Tunable topological phase transitions
Moiré bands
Twisting two-dimensional layers breaks perfect crystallinity yet gives rise to well-defined moiré bands that enable new electronic phenomena:
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Flat bands at magic angles
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Correlated electronic states
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Topological phases
Moiré butterflies
The large periodicity of moiré superlattices brings Hofstadter’s elusive fractal spectrum within reach of laboratory magnetic fields, enabling:
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Fractal energy bands
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Tunable miniband gaps
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Quantum Hall physics in superlattices
Meet the team
Rafi Bistritzer
Unmesh Ghorai
Postdoc
