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Tunneling studies of multilayered superconducting cuprate (Cu,C)Ba 2Ca3Cu4O12+δ 

Miyakawa, Nobuaki; Tokiwa, K.; Mikusu, S.; Zasadzinski, John F.; Özyüzer, Lütfi; İshihara, T.; Kaneko, Tsutomu; Watanabe, T.; Gray, Kenneth E. (World Scientific Publishing, 2003-08)
Point contact tunneling data are reported in a multilayered high-T c cuprate (Cu,C)Ba2Ca3Cu4O 12+δ with Tc = 117 K. The tunneling spectra in the superconducting state (T ≪ Tc) display spectral features such as well-defined ...
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Comparison of intrinsic Josephson and SIS tunneling spectroscopy of Bi 2Sr2CaCu2O8+δ 

Özyüzer, Lütfi; Kurter, Cihan; Zasadzinski, John F.; Gray, Kenneth E.; Hinks, David G.; Miyakawa, Nobuaki (IEEE, 2005-05)
Tunneling spectroscopy measurements are reported on optimally-doped and overdoped Bi2Sr2Ca2Cu2O 8+δ single crystals. A novel point contact method is used to obtain superconductor-insulator-normal metal (SIN) and SIS break ...
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Tunneling spectroscopy of heavily underdoped crystals of Bi2Sr2CaCu2O8-δ 

Özyüzer, Lütfi; Zasadzinski, John F.; Miyakawa, Nobuaki; Kendziora, Christopher A.; Sha, J.; Hinks, David G.; Gray, Kenneth E. (Elsevier, 2000-11)
Crystals of Bi2Sr2CaCu2O8+δ with optimal Tc=95 K have been underdoped using two different methods and the superconducting gaps have been obtained by tunneling. In some cases, three different tunneling geometries have been ...
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Fabrication of array of mesas on superconducting Bi2Sr 2CaCu2O8+δ single crystals 

Kurter, Cihan; Özyüzer, Lütfi (National Institute of Optoelectronics, 2005-02)
The superconducting properties of multi-layered high temperature superconductors (HTS) result mainly from the CuO2 planes, while the other structural components behave simply as charge reservoirs. Using these perfect-layered ...
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Predominantly superconducting origin of large energy gaps in underdoped Bi2Sr2CaCu2O8+δ from tunneling spectroscopy 

Miyakawa, Nobuaki; Zasadzinski, John F.; Özyüzer, Lütfi; Guptasarma, Prasenjit; Hinks, David G.; Kendziora, Christopher A.; Gray, Kenneth E. (American Physical Society, 1999-08)
New tunneling data are reported in Bi2Sr2CaCu2O8+δ which show quasiparticle excitation gaps, Δ, reaching values as high as 60 meV for underdoped crystals with Tc = 70 K. These energy gaps are nearly 3 times larger than ...
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Absence of pseudogap in heavily overdoped Bi2Sr2CaCu2O8+δ from tunneling spectroscopy of break junctions 

Özyüzer, Lütfi; Zasadzinski, John F.; Gray, Kenneth E.; Kendziora, Christopher A.; Miyakawa, Nobuaki (Institute of Physics Publishing, 2002-05)
We report tunneling spectroscopy of superconductor-insulator-superconductor break junctions on heavily overdoped Bi2Sr2CaCu2O8+δ with Tc = 56 K. At T ≪ Tc, the junction conductances display well-defined quasiparticle peaks ...
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Tunneling spectroscopy of Tl2Ba2CuO6 

Özyüzer, Lütfi; Yusof, Zikri; Zasadzinski, John F.; Li, Ting-Wei; Hinks, David G.; Gray, Kenneth E. (Elsevier, 1999-07)
New results from tunneling spectroscopies on near optimally doped single crystals of Tl2Ba2CuO6 (Tl-2201) junctions are presented. The superconductor-insulator-normal metal (SIN) tunnel junctions are obtained using the ...
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Quasiparticle and Josephson tunneling of overdoped Bi2Sr2CaCu2O8+δ single crystals 

Özyüzer, Lütfi; Zasadzinski, John F.; Kendziora, Christopher A.; Gray, Kenneth E. (American Physical Society, 2000-02)
The point contact tunneling technique is used to examine quasiparticle and Josephson currents in overdoped Bi2Sr2CaCu2O8+δ (Bi-2212) single crystals with bulk Tc values ranging from 82 K down to 62 K. Superconductor-insu ...
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Self-heating effect in intrinsic tunneling spectroscopy of HgBr2 intercalated Bi2.1Sr1.4Ca1.5Cu 2O8+δ single crystals 

Kurter, Cihan; Özyüzer, Lütfi; Zasadzinski, John F.; Hinks, David G.; Gray, Kenneth E. (IEEE, 2007-06)
We report tunneling results in intrinsic Josephson junction (IJJ) stacks fabricated in the form of square micromesas on HgBr2 intercalated Bi2.1Sr1.4Ca1.5Cu2O 8+δ (Bi2212) single crystals using photolithography and Ar ion ...
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Spin polarized current injection through HgBr2 intercalated Bi2212 intrinsic josephson junctions 

Özyüzer, Lütfi; Kurter, Cihan; Özdemir, Mustafa; Zasadzinski, John F.; Gray, Kenneth E.; Hinks, David G. (IEEE, 2007-06)
To investigate the effect of polarized current on tunneling characteristics of intrinsic Josephson junctions (IJJs), spin-polarized and spin-degenerate current have been injected through the c-axis of HgBr2 intercalated ...
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Özyüzer, Lütfi (13)
Gray, Kenneth E. (12)Zasadzinski, John F. (10)Hinks, David G. (9)Kurter, Cihan (7)Miyakawa, Nobuaki (5)Kendziora, Christopher A. (4)Mazur, Daniel (2)Özdemir, Mustafa (2)Claus, Helmut (1)... View MoreSubject
Tunneling spectroscopy (13)
Intrinsic Josephson junctions (6)Energy gap (4)High-Tc superconductors (3)High temperature superconductors (2)Josephson junction devices (2)Pseudogap (2)Superconducting gap (2)Superconductors (2)Tunneling (Physics) (2)... View MoreDate Issued2007 (5)2005 (2)2003 (1)2002 (1)2000 (2)1999 (2)

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