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Condensed Matter > Materials Science
Title: Rethinking Polarization in Wurtzite Semiconductors
(Submitted on 26 Mar 2024)
Abstract: Polarization arising from non-centrosymmetric wurtzite lattice underpins the physics and functionality of gallium nitride (GaN)-the most produced semiconductor materials second only to silicon. However, recent direct experimental measurements unveiled remanent polarization of unexpectedly large magnitudes and opposite orientations to traditionally anticipated. This significant discrepancy not only poses a formidable challenge to our existing theoretical paradigms but also accentuates the need for a critical rethinking and methodological refinement to integrate these novel observations with established knowledge, mitigating potential misunderstandings and misconceptions in this rapidly evolving field.
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