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|Title:||Metal-insulator transition at a depleted LaAlO3/SrTiO 3 interface: Evidence for charge transfer induced by SrTiO 3 phase transitions||Authors:||Lü, W.M.
Roy Barman, A.
|Issue Date:||24-Oct-2011||Citation:||Lü, W.M., Wang, X., Liu, Z.Q., Dhar, S., Annadi, A., Gopinadhan, K., Roy Barman, A., Su, H.B., Venkatesan, T., Ariando (2011-10-24). Metal-insulator transition at a depleted LaAlO3/SrTiO 3 interface: Evidence for charge transfer induced by SrTiO 3 phase transitions. Applied Physics Letters 99 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3656703||Abstract:||Two anomalous bias dependent resistive peaks induced by the SrTiO 3 structural phase transitions at 55 and 110 K were observed in a LaAlO3/SrTiO3 and Nb:SrTiO3 rectifying junction when the LaAlO3/SrTiO3 was depleted under reverse bias. At these transition temperatures, the barrier between LaAlO3/ SrTiO3 and Nb:SrTiO3 showed abrupt changes in the tunneling energy under forward bias. The peak at 110 K was an insulator-metal phase transition while the peak at 55 K was a metal-insulator one. We propose that the phase transitions of the SrTiO3 substrate influence the charge transfer to the LaAlO3/SrTiO3 layer, giving rise to these anomalous resistive peaks. © 2011 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/82683||ISSN:||00036951||DOI:||10.1063/1.3656703|
|Appears in Collections:||Staff Publications|
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