Sidewall depletion in nano-patterned LAO/STO heterostructures

作者: M. Z. Minhas , H. H. Blaschek , F. Heyroth , G. Schmidt

DOI: 10.1063/1.4943401

关键词: ConductanceHeterojunctionNanotechnologyConductivityOptoelectronicsFermi gasDry etchingNanostructureNano-Etching (microfabrication)Materials science

摘要: We have investigated the conductance of nanostructures fabricated from quasi-two-dimensional electron gas (q2DEG) formed at LaAlO3/ SrTiO3 (LAO/STO) interface. Measurements were done room temperature and T=4.2 K. Our findings show that fully industry compatible nano-patterning process conserves conductivity except for a small dependent sidewall depletion which we attribute to etch damage induced by dry etching process.

参考文章(28)
Heiko Gross, Namrata Bansal, Yong-Seung Kim, Seongshik Oh, Metal-insulator transition on SrTiO$_{3}$ surface induced by ionic-bombardment arXiv: Materials Science. ,(2011) , 10.1063/1.3650254
Pier Paolo Aurino, Alexey Kalabukhov, Nikolina Tuzla, Eva Olsson, Tord Claeson, Dag Winkler, Nano-patterning of the electron gas at the LaAlO3/SrTiO3 interface using low-energy ion beam irradiation Applied Physics Letters. ,vol. 102, pp. 201610- ,(2013) , 10.1063/1.4807785
Christof W Schneider, Stefan Thiel, German Hammerl, Christoph Richter, Jochen Mannhart, None, Microlithography of electron gases formed at interfaces in oxide heterostructures Applied Physics Letters. ,vol. 89, pp. 122101- ,(2006) , 10.1063/1.2354422
Yasuyuki Hikita, Harold Y. Hwang, Christopher Bell, Masayuki Hosoda, Masayuki Hosoda, Transistor operation and mobility enhancement in top-gated LaAlO3/SrTiO3 heterostructures Applied Physics Letters. ,vol. 103, pp. 103507- ,(2013) , 10.1063/1.4820449
Mark Huijben, Guus Rijnders, Dave H. A. Blank, Sara Bals, Sandra Van Aert, Jo Verbeeck, Gustaaf Van Tendeloo, Alexander Brinkman, Hans Hilgenkamp, Electronically coupled complementary interfaces between perovskite band insulators. Nature Materials. ,vol. 5, pp. 556- 560 ,(2006) , 10.1038/NMAT1675
M. Kawasaki, K. Takahashi, T. Maeda, R. Tsuchiya, M. Shinohara, O. Ishiyama, T. Yonezawa, M. Yoshimoto, H. Koinuma, Atomic Control of the SrTiO3 Crystal Surface Science. ,vol. 266, pp. 1540- 1542 ,(1994) , 10.1126/SCIENCE.266.5190.1540
Daisuke Kan, Takahito Terashima, Ryoko Kanda, Atsunobu Masuno, Kazunori Tanaka, Shucheng Chu, Hirofumi Kan, Atsushi Ishizumi, Yoshihiko Kanemitsu, Yuichi Shimakawa, Mikio Takano, Blue-light emission at room temperature from Ar + -irradiated SrTiO 3 Nature Materials. ,vol. 4, pp. 816- 819 ,(2005) , 10.1038/NMAT1498
Cheng Cen, Stefan Thiel, German Hammerl, Christof W Schneider, KE Andersen, C Stephen Hellberg, Jochen Mannhart, Jeremy Levy, None, Nanoscale control of an interfacial metal–insulator transition at room temperature Nature Materials. ,vol. 7, pp. 298- 302 ,(2008) , 10.1038/NMAT2136
Stefan Thiel, German Hammerl, Andreas Schmehl, Christof W Schneider, Jochen Mannhart, None, Tunable Quasi-Two-Dimensional Electron Gases in Oxide Heterostructures Science. ,vol. 313, pp. 1942- 1945 ,(2006) , 10.1126/SCIENCE.1131091
Yunzhong Chen, Nini Pryds, Josée E. Kleibeuker, Gertjan Koster, Jirong Sun, Eugen Stamate, Baogen Shen, Guus Rijnders, Søren Linderoth, Metallic and Insulating Interfaces of Amorphous SrTiO3-Based Oxide Heterostructures Nano Letters. ,vol. 11, pp. 3774- 3778 ,(2011) , 10.1021/NL201821J