Journal
PHYSICAL REVIEW B
Volume 77, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.77.245304
Keywords
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Funding
- EPSRC [EP/F021836/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F021836/1] Funding Source: researchfish
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Photogalvanic effects are observed and investigated in wurtzite (0001)-oriented GaN/AlGaN low-dimensional structures excited by terahertz radiation. The structures are shown to represent linear quantum ratchets. Experimental and theoretical analysis exhibits that the observed photocurrents are related to the lack of an inversion center in the GaN-based heterojunctions.
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