Zobrazeno 1 - 10
of 317
pro vyhledávání: '"Ozyuzer, L"'
In our article [1], we found that with increasing dissipation there is a clear, systematic shift and sharpening of the conductance peak along with the disappearance of the higher-bias dip/hump features (DHF), for a stack of intrinsic Josephson juncti
Externí odkaz:
http://arxiv.org/abs/1009.2999
Publikováno v:
Phys. Rev. B 81, 224518 (2010)
Anomalously high and sharp peaks in the conductance of intrinsic Josephson junctions in Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$ (Bi2212) mesas have been universally interpreted as superconducting energy gaps, but here we show they are a result of he
Externí odkaz:
http://arxiv.org/abs/0911.1420
Autor:
Gray, K. E., Ozyuzer, L., Koshelev, A. E., Kurter, C., Kadowaki, K., Yamamoto, T., Minami, H., Yamaguchi, H., Tachiki, M., Kwok, W. -K., Welp, U.
By patterning mesoscopic crystals of Bi2Sr2CaCu2O8 (BSCCO) into electromagnetic resonators the oscillations of a large number of intrinsic Josephson junctions can be synchronized into a macroscopic coherent state accompanied by the emission of strong
Externí odkaz:
http://arxiv.org/abs/0901.4290
Autor:
Kurter, C., Gray, K. E., Zasadzinski, J. F., Ozyuzer, L., Koshelev, A. E., Li, Q., Yamamoto, T., Kadowaki, K., Kwok, W. - K., Tachiki, M., Welp, U.
We present a thermal analysis of a patterned mesa on a Bi2Sr2CaCu2O8 (Bi2212) single crystal that is based on tunneling characteristics of the c-axis stack of ~800 intrinsic Josephson junctions in the mesa. Despite the large mesa volume (e.g., 40x300
Externí odkaz:
http://arxiv.org/abs/0901.4297
Autor:
Mazur, Daniel, Gray, K. E., Zasadzinski, J. F., Ozyuzer, L., Beloborodov, I. S., Zheng, H., Mitchell, J. F.
Publikováno v:
Phys. Rev. B 76, 193102 (2007)
Tunneling data on $\mathrm{La_{1.28}Sr_{1.72}Mn_2O_7}$ crystals confirm Coulomb interaction effects through the $\sqrt{\mathrm{E}}$ dependence of the density of states. Importantly, the data and analysis at high energy, E, show a pileup of states: mo
Externí odkaz:
http://arxiv.org/abs/0708.0950
Interlayer tunneling spectroscopy measurements were performed on mesa arrays of Bi-2212 single crystals, intercalated with HgBr$_2$. Tunneling conductances were obtained over a wide temperature range to examine the spectral features, especially the b
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701721
Autor:
Kurter, C., Ozyuzer, L., Mazur, Daniel, Zasadzinski, J. F., Rosenmann, D., Claus, H., Hinks, D. G., Gray, K. E.
Publikováno v:
Phys. Rev. B 76, 220502(R) (2007)
Point-contact tunneling on CaC$_6$ crystals reproducibly reveals superconducting gaps, $\Delta$, of 2.3$\pm$0.2 meV which are $\sim$~40% larger than earlier reports. That puts CaC$_6$ into the class of very strong-coupled superconductors since 2$\Del
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612581
Autor:
Freeland, J. W., Kavich, J. J., Gray, K. E., Ozyuzer, L., Zheng, H., Mitchell, J. F., Warusawithana, M. P., Ryan, P., Zhai, X., Kodama, R. H., Eckstein, J. N.
What happens to ferromagnetism at the surfaces and interfaces of manganites? With the competition between charge, spin, and orbital degrees of freedom, it is not surprising that the surface behavior may be profoundly different than that of the bulk.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611112
Autor:
Kanigel, A., Norman, M. R., Randeria, M., Chatterjee, U., Suoma, S., Kaminski, A., Fretwell, H. M., Rosenkranz, S., Shi, M., Sato, T., Takahashi, T., Li, Z. Z., Raffy, H., Kadowaki, K., Hinks, D., Ozyuzer, L., Campuzano, J. C.
Publikováno v:
Nature Physics 2, 447 (2006)
The pseudogap phase in the cuprates is a most unusual state of matter: it is a metal, but its Fermi surface is broken up into disconnected segments known as Fermi arcs. Using angle resolved photoemission spectroscopy, we show that the anisotropy of t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605499
Publikováno v:
Phys. Rev. B 73, 092514 (2006)
The tunneling spectra of high temperature superconductors on Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ (Bi-2212) reproducibly show a high bias structure in the form of a dip-hump at voltages higher than the gap voltage. Of central concern is whether this fe
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602405