CuAlO2 single crystals exhibit record-breaking birefringence and dichroism with visible transparency, attributed to two-dimensionally confined excitons in the copper layers.
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Colossal optical anisotropy in wide-bandgap semiconductor CuAlO2
CuAlO2 single crystals exhibit record-breaking birefringence and dichroism with visible transparency, attributed to two-dimensionally confined excitons in the copper layers.