A monolayer semiconductor is found to be a close-to-ideal platform for fractional quantum Hall state—a quantum liquid that emerges under large perpendicular magnetic fields. The image illustrates monolayer WSe2 hosting "composite fermions," a quasi-particle that forms due to the strong interactions between electrons and is responsible for the sequence of fractional quantum Hall states.
July 6, 2020

2D Semiconductors Found to Be Close-To-Ideal Fractional Quantum Hall Platform

The finding demonstrates the excellent intrinsic quality of 2D semiconductors and establish them as a unique test platform for future applications in quantum computing.
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February 24, 2020

Columbia Team Discovers New Way to Control the Phase of Light Using 2D Materials

Researchers use atomically thin materials—1/100,000 the size of a human hair—to manipulate the phase of light without changing its amplitude, at extremely low power loss.
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February 20, 2020

Columbia Researchers Develop New Method to Isolate Atomic Sheets and Create New Materials

The new exfoliation method makes large-area atomically thin layers that can be stacked in any desired order and orientation to generate a whole new class of artificial materials.
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June 25, 2019

Research Reveals Exotic Quantum States in Double-Layer Graphene

The findings shed new light on the nature of electron interactions in quantum systems and establish a potential new platform for future quantum computers.
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May 3, 2019

Columbia’s Dmitri Basov Wins Vannevar Bush Fellowship

The prestigious award supports top-tier researchers at U.S. universities whose work is of strategic importance to the Department of Defense.
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