111 citations · 365 across the 13 of their papers we have counts for
10 papers · 1 filter
Probing local emission properties in InGaN/GaN quantum wells by scanning tunneling luminescence microscopy
Mylène Sauty, Natalia Alyabyeva, Cheyenne Lynsky +7
Scanning tunneling electroluminescence microscopy is performed on a 3-nm-thick InGaN/GaN quantum well with x = 0.23 such that the main light emission occurs in the green. The techn…
Interplay of the inverse proximity effect and magnetic field in out-of-equilibrium single-electron devices
Shuji Nakamura, Yuri A. Pashkin, Mathieu Taupin +11
The magnetic field is shown to affect significantly non-equilibrium quasiparticle (QP) distributions under conditions of inverse proximity effect on the remarkable example of a sin…
Shot noise suppression in InGaAs/InGaAsP quantum channels
Yoshitaka Nishihara, Shuji Nakamura, Kensuke Kobayashi +3
We have measured the shot noise in a quantum point contact (QPC) fabricated by using InGaAs/InGaAsP heterostructure, whose conductance can be electrically tuned by the gate voltage…
Shot Noise Induced by Electron-nuclear Spin-flip Scattering in a Nonequilibrium Quantum Wire
Kensaku Chida, Masayuki Hashisaka, Yoshiaki Yamauchi +5
We study the shot noise (nonequilibrium current fluctuation) associated with dynamic nuclear polarization in a nonequilibrium quantum wire (QW) fabricated in a two-dimensional elec…
Sub-Poissonian shot noise in CoFeB/MgO/CoFeB-based magnetic tunneling junctions
Tomonori Arakawa, Koji Sekiguchi, Shuji Nakamura +7
We measured the shot noise in the CoFeB/MgO/CoFeB-based magnetic tunneling junctions with a high tunneling magnetoresistance ratio (over 200% at 3 K). Although the Fano factor in t…
Evolution of the Kondo Effect in a Quantum Dot Probed by the Shot Noise
Yoshiaki Yamauchi, Koji Sekiguchi, Kensaku Chida +6
We measure the current and shot noise in a quantum dot (QD) in the Kondo regime to address the non-equilibrium properties of the Kondo effect. By systematically tuning the temperat…
Temperature dependence of the visibility in an electronic Mach-Zehnder interferometer
Masayuki Hashisaka, Andreas Helzel, Shuji Nakamura +7
We performed the conductance and the shot noise measurements in an electronic Mach-Zehnder interferometer. The visibility of the interference is investigated as a function of the e…
Non-equilibrium Fluctuation Relations in a Quantum Coherent Conductor
Shuji Nakamura, Yoshiaki Yamauchi, Masayuki Hashisaka +8
We experimentally demonstrate the validity of non-equilibrium fluctuation relations by using a quantum coherent conductor. In equilibrium the fluctuation-dissipation relation leads…
Conductance Anomaly and Fano Factor Reduction in Quantum Point Contacts
Shuji Nakamura, Masayuki Hashisaka, Yoshiaki Yamauchi +3
We report an experimental study on the shot noise as well as the dc transport properties of a quantum point contact (QPC) whose conductance anomaly can be tuned electrostatically b…
Bolometric Detection of Quantum Shot Noise in Coupled Mesoscopic Systems
Masayuki Hashisaka, Yoshiaki Yamauchi, Shuji Nakamura +3
We present a new scheme to detect the quantum shot noise in coupled mesoscopic systems. By applying the noise thermometry to the capacitively coupled quantum point contacts (QPCs)…