32 citations · 103 across the 16 of their papers we have counts for
6 papers · 1 filter
The effect of large quantum fluctuation on the noise of a single-electron transistor
Yasuhiro Utsumi, Hiroshi Imamura, Masahiko Hayashi +1
We theoretically investigate the noise of a single-electron transistor in the regime of large quantum fluctuation of charge out of equilibrium. We show that the charge noise is sup…
Noise of a single-electron transistor in the regime of large quantum fluctuations of island charge out of equilibrium
Yasuhiro Utsumi, Hiroshi Imamura, Masahiko Hayashi +1
By using the drone-fermion representation and the Schwinger-Keldysh approach, we calculate the current noise and the charge noise for a single-electron transistor in the non-equili…
Parity Effect and Tunnel Magnetoresistance of Ferromagnet / Superconductor / Ferromagnet Single-Electron Tunneling Transistors
Hiroshi Imamura, Yasuhiro Utsumi, Hiromichi Ebisawa
We theoretically study the tunnel magnetoresistance(TMR) of ferromagnet / superconductor / ferromagnet single-electron tunneling transistors with a special attention to the parity…
The current and the charge noise of a single-electron transistor in the regime of large charge fluctuations out of equilibrium
Yasuhiro Utsumi, Hiroshi Imamura, Masahiko Hayashi +1
By using the Schwinger-Keldysh approach, we evaluate the current noise and the charge noise of the single-electron transistor (SET) in the regime of large charge fluctuations cause…
Orbital Magnetism in Three-Dimensional Quantum Dots
Takeru Suzuki, Hiroshi Imamura, Masahiko Hayashi +1
We study orbital magnetism in a three-dimensional (3D) quantum dot with a parabolic confining potential. We calculate the free energy of the system as a function of the magnetic fi…
Superconductivity Induced by the Proximity Effect of Singlet Resonating Valence Bond Order in High- Superconductors
M. Hayashi, H. Ebisawa
Effects of inhomogeneous doping on the high- cuprate superconductors are studied within the framework of the t-J model. Especially, the boundary between two non-superconductin…