309 citations · 1.2k across the 21 of their papers we have counts for
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Supercurrent generation by spin-twisting itinerant motion of electrons
Daichi Manabe, Hiroyasu Koizumi
Superconductivity is a phenomena where an external-feeding current flows through the system without voltage drop. This indicates the existence of an energy minimum under the curren…
Coherent emission from disordered arrays of driven Josephson vortices
Fabio Marchesoni, Sergey Savel'ev, Masashi Tachiki +1
We propose a mechanism of coherent emission from driven vortices in stacked intrinsic Josephson junctions. In contrast to super-radiance, which occurs only for highly ordered vorte…
Broadly Tunable Sub-terahertz Emission from Internal Branches of the Current-voltage Characteristics of Superconducting Bi2Sr2CaCu2O8+d Single Crystals
Manabu Tsujimoto, Takashi Yamamoto, Kaveh Delfanazari +8
Continuous, coherent sub-terahertz radiation arises when a dc voltage is applied across a stack of the many intrinsic Josephson junctions in a Bi2Sr2CaCu2O8+d single crystal. The a…
Spin-Triplet Vortex State in the Topological Superconductor CuxBi2Se3
Pradip Das, Yusuke Suzuki, Masashi Tachiki +1
We report on the observation of bulk superconductivity from dc magnetization measurements in a cylindrical single crystal of CuxBi2Se3. The magnitude of the magnetization in the Me…
Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+d
Manabu Tsujimoto, Kazuhiro Yamaki, Kota Deguchi +6
Subterahertz radiation emitted from a variety of short rectangular-, square-, and disk-shaped mesas of intrinsic Josephson junctions fabricated from a Bi2Sr2CaCu2O8+d single crysta…
Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{} Intrinsic Josephson Junctions
Kazuo Kadowaki, Manabu Tsujimoto, Kazuhiro Yamaki +5
The THz radiation emitted from rectangular mesas of single-crystal was studied using angular distribution measurements and Fourier transform infrar…
Reply to the comment [arXiv:0903.5110] on "Mechanism of Terahertz Electromagnetic Emission from Intrinsic Josephson Junctions" [arXiv:0810.5268]
Masashi Tachiki, Tomio Koyama, Shouta Fukuya
We reply to the comment [arXiv:0903.5110] on our paper "Mechanism of Terahertz Electromagnetic Emission from Intrinsic Josephson Junctions" [arXiv:0810.5268].
Thermal Management in Large Bi2212 Mesas used for Terahertz Sources
C. Kurter, K. E. Gray, J. F. Zasadzinski +8
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 Joseph…
Emission of Terahertz Waves from Stacks of Intrinsic Josephson Junctions
K. E. Gray, L. Ozyuzer, A. E. Koshelev +8
By patterning mesoscopic crystals of Bi2Sr2CaCu2O8 (BSCCO) into electromagnetic resonators the oscillations of a large number of intrinsic Josephson junctions can be synchronized i…
Mechanism of Terahertz Electromagnetic Wave Emission from Intrinsic Josephson Junctions
Masashi Tachiki, Shouta Fukuya, Tomio Koyama
Using a 3-D parallelepiped model of intrinsic Josephson junctions, we calculate the cavity resonance modes of Josephson plasma waves excited by external electric currents. The elec…
Computer Simulation on Terahertz Emission from Intrinsic Josephson Junctions of High-T_c Superconductors
Shizeng Lin, Xiao Hu, Masashi Tachiki
Solving coupled nonlinear sine-Gordon equations and Maxwell equations numerically, we study the electromagnetic and superconducting properties of the single crystal of high- s…
Periodic Oscillations of Josephson-Vortex Flow Resistance in Oxygen-Deficient Y1Ba2Cu3Ox
M. Nagao, S. Urayama, S. M. Kim +9
We measured the Josephson vortex flow resistance as a function of magnetic field applied parallel to the ab-planes using annealed Y1Ba2Cu3Ox intrinsic Josephson junctions having hi…
Superconductivity in Polycrystalline Diamond Thin Films
Yoshihiko Takano, Masanori Nagao, Tomohiro Takenouchi +4
Superconductivity was discovered in heavily boron-doped diamond thin films deposited by the microwave plasma assisted chemical vapor deposition (MPCVD) method. Advantages of the MP…
Advantage on Superconductivity of Heavily Boron-Doped (111) Diamond Films
Hitoshi Umezawa, Tomohiro Takenouchi, Yoshihiko Takano +8
The superconductivity transition temperatures Tc(onset) of 11.4 K and Tc(offset) of 7.4 K, which are the highest in diamond at present, are realized on homoepitaxially grown (111)…
Decoupled two-dimensional superconductivity and continuous melting transitions in layered superconductors immersed in a parallel magnetic field
Xiao Hu, Masashi Tachiki
Possible phases and the B-T phase diagram of interlayer Josephson vortices induced by a magnetic field parallel to the superconducting layers are investigated by Monte Carlo simula…
Superconductivity in CVD Diamond Thin Film Well-Above Liquid Helium Temperature
Y. Takano, M. Nagao, K. Kobayashi +5
Diamond has always been adored as a jewel. Even more fascinating is its outstanding physical properties; it is the hardest material known in the world with the highest thermal cond…
d-like Symmetry of the Order Parameter and Intrinsic Josephson Effects in Bi2212 Cross-Whisker Junctions
Yoshihiko Takano, Takeshi Hatano, Akihiro Fukuyo +5
An intrinsic tunnel junction was made using two Bi-2212 single crystal whiskers. The two whiskers with a cross-angle were overlaid at their c-planes and connected by annealing. The…
Vibronic mechanism of high-Tc superconductivity
Masashi Tachiki, Masahiko Machida, Takeshi Egami
The dispersion of the in-plane Cu-O bond-stretching LO phonon mode in the high- superconducting cuprates shows strong softening with doping near the zone boundary. We sugges…
Kosterlitz-Thouless phase and continuous melting transition in layered superconductors immersed in a parallel magnetic field
Xiao Hu, Masashi Tachiki
B-T phase diagram and phase transitions of interlayer Josephson vortices are investigated. For magnetic fields above a critical value, we find a Kosterlitz-Thouless (KT) type inter…
A Cross-Whiskers Junction as a Novel Fabrication Process for Intrinsic Josephson Junction
Yoshihiko Takano, Takeshi Hatano, Akihiro Fukuyo +4
A Bi2Sr2CaCu2O8+d cross-whiskers junction has been successfully discovered as a novel intrinsic Josephson junction without using any technique for micro-fabrication. Two Bi2Sr2CaCu…
Flux-line entanglement as the mechanism of melting transition in high-temperature superconductors in a magnetic field
Yoshihiko Nonomura, Xiao Hu, Masashi Tachiki
The mechanism of the flux-line-lattice (FLL) melting in anisotropic high-T_c superconductors in is clarified by Monte Carlo simulations of the 3D f…