148 citations · 821 across the 22 of their papers we have counts for
19 papers · 1 filter
Strong phase coherence and vortex matter in a fractal system with proximity-induced superconductivity
Nanami Teramachi, Aoi Hashimoto, Iku Nakaaki +10
The proximity effect in normal/superconductor heterostructures is an intriguing phenomenon in that the normal side takes on the properties of a superconductor with an induced gap.…
Visualizing the Pt doping effect on surface and electronic structure in Ir_{1-x}Pt_{x}Te_{2} by scanning tunneling microscopy and spectroscopy
Y. Fujisawa, T. Machida, K. Igarashi +7
We report on the Pt doping effect on surface and electronic structure in IrPtTe by scanning tunneling microscopy (STM) and spectrosc…
Quantum Interference of Impurity Bound States in BiSrCa(CuZn)O Probed by Scanning Tunneling Spectroscopy
Tadashi Machida, Takuya Kato, Hiroshi Nakamura +6
In conventional superconductors, magnetic impurities form an impurity band due to quantum interference of the impurity bound states, leading to suppression of the superconducting t…
A New Noncentrosymmetric Superconducting Phase in the Li-Rh-B System
Hiroyuki Takeya, Hiroki Fujii, Mohammed ElMassalami +6
Superconductivity, at 2-3 K, was observed in a novel phase of the ternary Li-Rh-B system. The structural phase exhibits a large noncentrosymmetric cubic unit cell with the a-parame…
Disappearance of zinc impurity resonance in large gap region on BiSrCaCuO probed by scanning tunneling spectroscopy
Tadashi Machida, Takuya Kato, Hiroshi Nakamura +6
Using Scanning tunneling spectroscopy (STS), we report the correlation between spatial gap inhomogeneity and the zinc (Zn) impurity resonance in single crystals of Bi$_{\mathrm{2}}…
History and metastability effects in the intermediate state of mesoscopic type I superconducting Indium
Ajay D. Thakur, Ujjal K. Gautam, Goutam Sheet +5
We report detailed magnetic measurements on history and metastability effects in the intermediate state of mesoscopic cylinders of type I superconducting Indium. This includes the…
Multi-vortex versus interstitial vortices scenario in superconducting antidot arrays
A. D. Thakur, S. Ooi, S. P. Chockalingam +3
In superconducting thin films, engineered lattice of antidots (holes) act as an array of columnar pinning sites for the vortices and thus lead to vortex matching phenomena at comme…
Observation of Vortex Matching Phenomena in Antidot Array of NbN Thin Film
Ajay D. Thakur, Shuuichi Ooi, Subbaiah P. Chockalingam +3
We report vortex matching phenomenon in rectangular antidot array fabricated on epitaxial NbN thin film. The antidot array was fabricated using Focussed Ion Beam milling technique.…
Vortex matching effect in engineered thin films of NbN
Ajay D. Thakur, Shuuichi Ooi, Subbaiah P. Chockalingam +3
We report robust vortex matching effects in antidot arrays fabricated on thin films of NbN. The near absence of hysteresis between field sweep directions indicates a negligible res…
Focused-ion-beam-induced deposition of superconducting nanowires
E. S. Sadki, S. Ooi, K. Hirata
Superconducting nanowires, with a critical temperature of 5.2 K, have been synthesized using an ion-beam-induced deposition, with a Gallium focused ion beam and Tungsten Carboxyl,…
Investigating The Vortex Melting Phenomenon In BSCCO Crystals Using Magneto-Optical Imaging Technique
A. Soibel, S. S. Banerjee, Y. Myasoedov +4
Using a novel differential magneto-optical imaging technique we investigate the phenomenon of vortex lattice melting in crystals of Bi_2Sr_2CaCu_2O_8 (BSCCO). The images of melting…
Periodic Oscillations of Josephson-Vortex Flow Resistance in BiSrCaCuO
Shuuichi Ooi, Takashi Mochiku, Kazuto Hirata
To study the Josephson-vortex system in the intrinsic Josephson junctions, we have measured the flow resistance as a function of magnetic field parallel to the plane in Bi${}_…
Vortex Matter Transition in BiSrCaCuO under Tilted Fields
S. Ooi, T. Shibauchi, K. Itaka +2
Vortex phase diagram under tilted fields from the axis in BiSrCaCuO is studied by local magnetization hysteresis measurements using Hall probes. Whe…
Shear-induced vortex decoupling in Bi2Sr2CaCu2O8 crystals
B. Khaykovich, D. T. Fuchs, K. Teitelbaum +6
Simultaneous transport and magnetization studies in Bi2Sr2CaCu2O8 crystals at elevated currents reveal large discrepancies, including finite resistivity at temperatures of 40K belo…
Evidence for field-induced excitations in low-temperature thermal conductivity of Bi_2Sr_2CaCu_2O_8
H. Aubin, K. Behnia, S. Ooi +1
The thermal conductivity ,, of Bi_2Sr_2CaCu_2O_8 was studied as a function of magnetic field. Above 5 K, after an initial decrease, presents a kink followed by a plateau,…
Transport properties of BSCCO crystals with and without surface barriers
Dan T. Fuchs, Richard A. Doyle, Eli Zeldov +5
Large BSCCO crystals with electrical contacts positioned far from the edges are studied by transport measurements, then cut into the common narrow strip geometry, and remeasured. I…
Possible new vortex matter phases in BSCCO
Dan T. Fuchs, Eli Zeldov, Tsuyoshi Tamegai +3
The vortex matter phase diagram of BSCCO crystals is analyzed by investigating vortex penetration through the surface barrier in the presence of a transport current. The strength o…
Where does the transport current flow in Bi2Sr2CaCu2O8 crystals?
Dan T. Fuchs, Eli Zeldov, Michael Rappaport +3
A new measurement technique for investigation of vortex dynamics is introduced. The distribution of the transport current across a crystal is derived by a sensitive measurement of…
Comment on ``Plateaus Observed in the Field profile of Thermal Conductivity in the Superconductor Bi_2Sr_2CaCu_2O_8''
H. Aubin, K. Behnia, S. Ooi +1
We studied the thermal conductivity of a Bi_2Sr_2CaCu_2O_8 single crystal as a function of a magnetic field ramped up and down and then reversed. As recently discovered by Krishana…