Virtual Journal of Applications of Superconductivity -- July 15, 2010

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ELECTRONICS APPLICATIONS

Superconducting quantum interference proximity transistor
Francesco Giazotto, Joonas T. Peltonen, Matthias Meschke, and Jukka P. Pekola
Nature Physics   6, 551 (2010)   
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Qubit-induced high-order nonlinear interaction of the polar molecules in a stripline cavity
Gang Chen, Hao Zhang, Yonggang Yang, Rui Wang, Liantuan Xiao, and Suotang Jia
Physical Review A   82, 013601 (2010) (5 pages)   
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Switchable Ultrastrong Coupling in Circuit QED
B. Peropadre, P. Forn-Díaz, E. Solano, and J. J. García-Ripoll
Physical Review Letters   105, 023601 (2010) (4 pages)   
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Gains without inversion in quantum systems with broken parities
W. Z. Jia and L. F. Wei
Physical Review A   82, 013808 (2010) (6 pages)   
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Positive noise cross-correlation in hybrid superconducting and normal-metal three-terminal devices
Jian Wei and V. Chandrasekhar
Nature Physics   6, 494-498 (2010)   
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Integrated photonic qubit quantum computing on a superconducting chip
Lianghui Du, Yong Hu, Zheng-Wei Zhou, Guang-Can Guo, and Xingxiang Zhou
New Journal of Physics   12, 63015- (2010)   
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Experimental investigation of an eight-qubit unit cell in a superconducting optimization processor
R. Harris, M. W. Johnson, T. Lanting, A. J. Berkley, J. Johansson, P. Bunyk, E. Tolkacheva, E. Ladizinsky, N. Ladizinsky, T. Oh, F. Cioata, I. Perminov, P. Spear, C. Enderud, C. Rich, S. Uchaikin, M. C. Thom, E. M. Chapple, J. Wang, B. Wilson, M. H. S. Amin, N. Dickson, K. Karimi, B. Macready, C. J. S. Truncik, and G. Rose
Physical Review B   82, 024511 (2010) (15 pages)   
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Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi₂Sr₂CaCu₂O₈₊
Manabu Tsujimoto, Kazuhiro Yamaki, Kota Deguchi, Takashi Yamamoto, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, Kazuo Kadowaki, and Richard A. Klemm
Physical Review Letters   105, 037005 (2010) (4 pages)   
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Macroscopic Quantum Tunneling in a Bi₂Sr₂CaCu₂O_8+\delta Single Crystalline Whisker
Yuimaru Kubo, Yamaguchi Takahide, Shinya Ueda, Yoshihiko Takano, and Youiti Ootuka
Applied Physics Express   3, 063104 (2010) (3 pages)   
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Coulomb-enhanced resonance transmission of quantum SINIS junctions
N. B. Kopnin, Y. M. Galperin, and V. M. Vinokur
Physical Review B   82, 012503 (2010) (4 pages)   
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Response and amplification of terahertz electromagnetic waves in intrinsic Josephson junctions of layered high-T_c superconductor
Shi-Zeng Lin and Xiao Hu
Physical Review B   82, 020504 (2010) (4 pages)   
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Minimal resonator loss for circuit quantum electrodynamics
R. Barends, N. Vercruyssen, A. Endo, P. J. de Visser, T. Zijlstra, T. M. Klapwijk, P. Diener, S. J. C. Yates, and J. J. A. Baselmans
Applied Physics Letters   97, 023508 (2010) (3 pages)   
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Intrinsic detection efficiency of superconducting nanowire single-photon detectors with different thicknesses
M. Hofherr, D. Rall, K. Ilin, M. Siegel, A. Semenov, H.-W. Hübers, and N. A. Gippius
Journal of Applied Physics   108, 014507 (2010) (9 pages)   
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Noise in resistively shunted Josephson junctions
F. T. Brandt, J. Frenkel, and J. C. Taylor
Physical Review B   82, 014515 (2010) (10 pages)   
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Environment-Assisted Tunneling as an Origin of the Dynes Density of States
J. P. Pekola, V. F. Maisi, S. Kafanov, N. Chekurov, A. Kemppinen, Yu. A. Pashkin, O.-P. Saira, M. Möttönen, and J. S. Tsai
Physical Review Letters   105, 026803 (2010) (4 pages)   
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High resolution on-chip thermometry using a microstrip-coupled transition edge sensor
D. J. Goldie, K. Rostem, and S. Withington
Journal of Applied Physics   108, 014505 (2010) (5 pages)   
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Tunneling spectra of strongly coupled superconductors: Role of dimensionality
C. Berthod
Physical Review B   82, 024504 (2010) (8 pages)   
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LARGE-SCALE APPLICATIONS

Use of second generation coated conductors for efficient shielding of dc magnetic fields
J. F. Fagnard, M. Dirickx, G. A. Levin, P. N. Barnes, B. Vanderheyden, and P. Vanderbemden
Journal of Applied Physics   108, 013910 (2010) (4 pages)   
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Calorimetric method of ac loss measurement in a rotating magnetic field
P. K. Ghoshal, T. A. Coombs, and A. M. Campbell
Review of Scientific Instruments   81, 074702 (2010) (8 pages)   
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MATERIALS IMPORTANT FOR APPLICATIONS

Vortex pinning by compound defects in YBa₂Cu₃O₇₋
J. Hua, U. Welp, J. Schlueter, A. Kayani, Z. L. Xiao, G. W. Crabtree, and W. K. Kwok
Physical Review B   82, 024505 (2010) (4 pages)   
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Intra-unit-cell electronic nematicity of the high-T_c copper-oxide pseudogap states
M. J. Lawler, K. Fujita, Jhinhwan Lee, A. R. Schmidt, Y. Kohsaka, Chung Koo Kim, H. Eisaki, S. Uchida, J. C. Davis, J. P. Sethna, and Eun-Ah Kim
Nature   466, 347-351 (2010)   
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Second superconducting energy gap of Nb₃Sn observed by breakjunction point-contact spectroscopy
M. Marz, G. Goll, W. Goldacker, and R. Lortz
Physical Review B   82, 024507 (2010) (5 pages)   
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Theory of Raman scattering from Leggett's collective mode in a multiband superconductor: Application to MgB₂
M. V. Klein
Physical Review B   82, 014507 (2010) (9 pages)   
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Evidence of local structural inhomogeneity in FeSe_1−xTe_x from extended x-ray absorption fine structure
B. Joseph, A. Iadecola, A. Puri, L. Simonelli, Y. Mizuguchi, Y. Takano, and N. L. Saini
Physical Review B   82, 020502 (2010) (4 pages)   
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Inconsistent pressure effect on superconducting transition temperature and volume in Fe_1+yTe_1−xSe_x single crystals
L Li, Z Yang, Z Zhang, L Pi, S Tan, and Y Zhang
New Journal of Physics   12, 63019- (2010)   
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Temperature-pressure phase diagram of the superconducting iron pnictide LiFeP
K. Mydeen, E. Lengyel, Z. Deng, X. C. Wang, C. Q. Jin, and M. Nicklas
Physical Review B   82, 014514 (2010) (4 pages)   
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Spin-phonon coupling and effect of pressure in the superconductor LiFeAs: Lattice dynamics from first-principles calculations
G. Q. Huang, Z. W. Xing, and D. Y. Xing
Physical Review B   82, 014511 (2010) (7 pages)   
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Absence of an Appreciable Iron Isotope Effect on the Transition Temperature of the Optimally Doped SmFeAsO_1-y Superconductor
Parasharam M. Shirage, Kiichi Miyazawa, Kunihiro Kihou, Hijiri Kito, Yoshiyuki Yoshida, Yasumoto Tanaka, Hiroshi Eisaki, and Akira Iyo
Physical Review Letters   105, 037004 (2010) (4 pages)   
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Unusual Electronic Structure and Observation of Dispersion Kink in CeFeAsO Parent Compound of FeAs-based Superconductors
Haiyun Liu, G. F. Chen, Wentao Zhang, Lin Zhao, Guodong Liu, T.-L. Xia, Xiaowen Jia, Daixiang Mu, Shanyu Liu, Shaolong He, Yingying Peng, Junfeng He, Zhaoyu Chen, Xiaoli Dong, Jun Zhang, Guiling Wang, Yong Zhu, Zuyan Xu, Chuangtian Chen, and X. J. Zhou
Physical Review Letters   105, 027001 (2010) (4 pages)   
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Effects of spin structures on phonons in BaFe₂As₂
Y. Wang, S. L. Shang, X. D. Hui, L. Q. Chen, and Z. K. Liu
Applied Physics Letters   97, 022504 (2010) (3 pages)   
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Effects of magnetism and doping on the electron-phonon coupling in BaFe₂As₂
L. Boeri, M. Calandra, I. I. Mazin, O. V. Dolgov, and F. Mauri
Physical Review B   82, 020506 (2010) (4 pages)   
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Different response of the crystal structure to isoelectronic doping in BaFe₂(As_1−xP_x)₂ and (Ba_1−xSr_x)Fe₂As₂
Marianne Rotter, Christine Hieke, and Dirk Johrendt
Physical Review B   82, 014513 (2010) (6 pages)   
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Band-dependent Quasiparticle Dynamics in Single Crystals of the Ba_0.6K_0.4Fe₂As₂ Superconductor Revealed by Pump-Probe Spectroscopy
Darius H. Torchinsky, G. F. Chen, J. L. Luo, N. L. Wang, and Nuh Gedik
Physical Review Letters   105, 027005 (2010) (4 pages)   
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Specific Heat Measurements of Ba_0.68K_0.32Fe₂As₂ Single Crystals: Evidence for a Multiband Strong-Coupling Superconducting State
P. Popovich, A. V. Boris, O. V. Dolgov, A. A. Golubov, D. L. Sun, C. T. Lin, R. K. Kremer, and B. Keimer
Physical Review Letters   105, 027003 (2010) (4 pages)   
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Electron-hole asymmetry in Co- and Mn-doped SrFe₂As₂
J. S. Kim, Seunghyun Khim, H. J. Kim, M. J. Eom, J. M. Law, R. K. Kremer, Ji Hoon Shim, and Kee Hoon Kim
Physical Review B   82, 024510 (2010) (6 pages)   
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High Critical Current Density 4 MA/cm² in Co-Doped BaFe₂As₂ Epitaxial Films Grown on (La,Sr)(Al,Ta)O₃ Substrates without Buffer Layers
Takayoshi Katase, Hidenori Hiramatsu, Toshio Kamiya, and Hideo Hosono
Applied Physics Express   3, 063101 (2010) (3 pages)   
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Critical current and vortex dynamics in single crystals of Ca(Fe_1−xCo_x)₂As₂
A. K. Pramanik, L. Harnagea, S. Singh, S. Aswartham, G. Behr, S. Wurmehl, C. Hess, R. Klingeler, and B. Büchner
Physical Review B   82, 014503 (2010) (7 pages)   
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Conductance asymmetry in point-contacts on epitaxial thin films of Ba(Fe_0.92Co_0.08)₂As₂
Manan Mehta, Goutam Sheet, D. A. Dikin, S. Lee, C. W. Bark, J. Jiang, J. D. Weiss, E. E. Hellstrom, M. S. Rzchowski, C. B. Eom, and V. Chandrasekhar
Applied Physics Letters   97, 012503 (2010) (3 pages)   
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Superconductivity Above 40 K Observed in a New Iron Arsenide Oxide (Fe₂As₂)(Ca₄(Mg,Ti)₃O_y)
Hiraku Ogino, Yasuaki Shimizu, Koichi Ushiyama, Naoto Kawaguchi, Kohji Kishio, and Jun-ichi Shimoyama
Applied Physics Express   3, 063103 (2010) (3 pages)   
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Supercurrent in superconducting graphene
N. B. Kopnin and E. B. Sonin
Physical Review B   82, 014516 (2010) (8 pages)   
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First-Principles Prediction of Doped Graphane as a High-Temperature Electron-Phonon Superconductor
G. Savini, A. C. Ferrari, and F. Giustino
Physical Review Letters   105, 037002 (2010) (4 pages)   
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Specific heat measurements of a superconducting NbS₂ single crystal in an external magnetic field: Energy gap structure
J. Kačmarčík, Z. Pribulová, C. Marcenat, T. Klein, P. Rodière, L. Cario, and P. Samuely
Physical Review B   82, 014518 (2010) (5 pages)   
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Enhanced superconducting vortex pinning with disordered nanomagnetic arrays
Y. J. Rosen, A. Sharoni, and Ivan K. Schuller
Physical Review B   82, 014509 (2010) (5 pages)   
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