{"abstract":[{"text":"We investigate electronic transport in n-i-n GaN nanowires with and without AlN double barriers. The nanowires are grown by catalyst-free, plasma-assisted molecular beam epitaxy enabling abrupt GaN/AlN interfaces as well as longitudinal n-type doping modulation. At low temperature, transport in n-i-n GaN nanowires is dominated by the Coulomb blockade effect. Carriers are confined in the undoped middle region, forming single or multiple islands with a characteristic length of ∼100 nm. The incorporation of two AlN tunnel barriers causes confinement to occur within the GaN dot in between. In the case of a 6 nm thick dot and 2 nm thick barriers, we observe characteristic signatures of Coulomb-blockaded transport in single quantum dots with discrete energy states. For thinner dots and barriers, Coulomb-blockade effects do not play a significant role while the onset of resonant tunneling via the confined quantum levels is accompanied by a negative differential resistance surviving up to ∼150 K.","lang":"eng"}],"issue":"9","publication_status":"published","publication":"Nano Letters","title":"Quantum transport in GaN/AlN double-barrier heterostructure nanowires","quality_controlled":0,"author":[{"last_name":"Songmuang","first_name":"Rudeeson","full_name":"Songmuang, Rudeeson"},{"id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","full_name":"Georgios Katsaros","first_name":"Georgios"},{"last_name":"Monroy","first_name":"Eva","full_name":"Monroy, Eva"},{"full_name":"Spathis, Panayotis N","first_name":"Panayotis","last_name":"Spathis"},{"last_name":"Bougerol","first_name":"Catherine","full_name":"Bougerol, Catherine"},{"first_name":"Massimo","full_name":"Mongillo, Massimo","last_name":"Mongillo"},{"full_name":"De Franceschi, Silvano","first_name":"Silvano","last_name":"De Franceschi"}],"doi":"10.1021/nl1017578","_id":"1753","main_file_link":[{"url":"http://arxiv.org/abs/1005.3637","open_access":"1"}],"intvolume":"        10","type":"journal_article","extern":1,"volume":10,"publist_id":"5371","date_updated":"2021-01-12T06:52:59Z","oa":1,"date_published":"2010-09-08T00:00:00Z","day":"08","page":"3545 - 3550","status":"public","publisher":"American Chemical Society","year":"2010","date_created":"2018-12-11T11:53:49Z","month":"09","citation":{"apa":"Songmuang, R., Katsaros, G., Monroy, E., Spathis, P., Bougerol, C., Mongillo, M., &#38; De Franceschi, S. (2010). Quantum transport in GaN/AlN double-barrier heterostructure nanowires. <i>Nano Letters</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/nl1017578\">https://doi.org/10.1021/nl1017578</a>","chicago":"Songmuang, Rudeeson, Georgios Katsaros, Eva Monroy, Panayotis Spathis, Catherine Bougerol, Massimo Mongillo, and Silvano De Franceschi. “Quantum Transport in GaN/AlN Double-Barrier Heterostructure Nanowires.” <i>Nano Letters</i>. American Chemical Society, 2010. <a href=\"https://doi.org/10.1021/nl1017578\">https://doi.org/10.1021/nl1017578</a>.","ista":"Songmuang R, Katsaros G, Monroy E, Spathis P, Bougerol C, Mongillo M, De Franceschi S. 2010. Quantum transport in GaN/AlN double-barrier heterostructure nanowires. Nano Letters. 10(9), 3545–3550.","ieee":"R. Songmuang <i>et al.</i>, “Quantum transport in GaN/AlN double-barrier heterostructure nanowires,” <i>Nano Letters</i>, vol. 10, no. 9. American Chemical Society, pp. 3545–3550, 2010.","ama":"Songmuang R, Katsaros G, Monroy E, et al. Quantum transport in GaN/AlN double-barrier heterostructure nanowires. <i>Nano Letters</i>. 2010;10(9):3545-3550. doi:<a href=\"https://doi.org/10.1021/nl1017578\">10.1021/nl1017578</a>","mla":"Songmuang, Rudeeson, et al. “Quantum Transport in GaN/AlN Double-Barrier Heterostructure Nanowires.” <i>Nano Letters</i>, vol. 10, no. 9, American Chemical Society, 2010, pp. 3545–50, doi:<a href=\"https://doi.org/10.1021/nl1017578\">10.1021/nl1017578</a>.","short":"R. Songmuang, G. Katsaros, E. Monroy, P. Spathis, C. Bougerol, M. Mongillo, S. De Franceschi, Nano Letters 10 (2010) 3545–3550."},"acknowledgement":"This research was partly funded by the Agence Nationale de la Recherche through the COHESION project. G.K. acknowledges further support from the Deutsche Forschungsgemeinschaft (Grant KA 2922/1-1)"}