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Title: Spin polarized tunneling in large area mesas of superconducting Bi 2Sr2CaCu2O8+δ for the generation of the THz waves
Authors: Türkoğlu, Fulya
Şimşek, Yılmaz
Köseoğlu, Hasan
Demirhan, Yasemin
Meriç Polster, Zeynep
Özyüzer, Lütfi
Issue Date: 2009
Publisher: Institute of Electrical and Electronics Engineers Inc.
Abstract: Rectangular intrinsic Josephson junction mesa structures of superconducting Bi2Sr2CaCu2O8+delta (Bi2212) can be used as a source of continuous, coherent and polarized terahertz (THz) radiation. THz emitting mesas are below a certain underdoped level of Bi2212. They have small Josephson critical current in contrast to optimally doped and overdoped Bi2212. We deposited Au/Co/Au multilayer top of mesa and obtained small critical current from mesas fabricated by as-grown Bi2212 single crystals due to injection of spin polarized current. The spin injection eliminates adjustment of doping level for successful THz emission.
Description: Workshop on Terahertz and Mid Infrared Radiation (TERA-MIR 2009)
ISBN: 978-1-4244-3848-8
Appears in Collections:Electrical - Electronic Engineering / Elektrik - Elektronik Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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