203 citations · 758 across the 19 of their papers we have counts for
19 papers
Diffusion model for analyzing quantum fingerprints in conductance fluctuation
Naoto Yokoi, Yuki Tanaka, Yukito Nonaka +3
A conditional diffusion model has been developed to analyze intricate conductance fluctuations called universal conductance fluctuations or quantum fingerprints appearing in quantu…
Negative longitudinal resistance of monolayer graphene in the quantum Hall regime
Alexey A. Kaverzin, Shunsuke Daimon, Takashi Kikkawa +2
In the quantum Hall regime the charge current is carried by ideal one-dimensional edge channels where the backscattering is prohibited by topology. This results in the constant pot…
Dynamics of measurement-induced state transitions in superconducting qubits
Yuta Hirasaki, Shunsuke Daimon, Naoki Kanazawa +3
We have investigated temporal fluctuation of superconducting qubits via the time-resolved measurement for an IBM Quantum system. We found that the qubit error rate abruptly changes…
Detecting bulk carbon ferromagnetism in graphene multi-edge structure
Chao Wang, Nan Jian, Meijie Yin +11
The emergence of bulk carbon ferromagnetism is long-expected over years. At nanoscale, carbon ferromagnetism was detected by analyzing the magnetic edge states via scanning tunneli…
Quantum Circuit Distillation and Compression
Shunsuke Daimon, Kakeru Tsunekawa, Ryoto Takeuchi +3
Quantum coherence in a qubit is vulnerable to environmental noise. When long quantum calculation is run on a quantum processor without error correction, the noise often causes fata…
Detection of temporal fluctuation in superconducting qubits for quantum error mitigation
Yuta Hirasaki, Shunsuke Daimon, Toshinari Itoko +2
We have investigated instability of a superconducting quantum computer by continuously monitoring the qubit output. We found that qubits exhibit a step-like change in the error rat…
Deciphering quantum fingerprints in electric conductance
Shunsuke Daimon, Kakeru Tsunekawa, Shinji Kawakami +5
When the electric conductance of a nano-sized metal is measured at low temperatures, it often exhibits complex but reproducible patterns as a function of external magnetic fields,…
Observation of nuclear-spin Seebeck effect
T. Kikkawa, D. Reitz, H. Ito +10
Thermoelectric effects have been applied to power generators and temperature sensors that convert waste heat into electricity. The effects, however, have been limited to electrons…
Observation of quantum interference conductance fluctuations in metal rings with strong spin-orbit coupling
R. Ramos, T. Makiuchi, T. Kikkawa +3
We investigated the magnetotransport properties of mesoscopic platinum nanostructures (wires and rings) with sub-100 nm lateral dimensions at very low temperatures. Despite the str…
Magnon polarons in the spin Peltier effect
Reimei Yahiro, Takashi Kikkawa, Rafael Ramos +4
We report the observation of anomalous peak structures induced by hybridized magnon-phonon excitation (magnon polarons) in the magnetic field dependence of the spin Peltier effect…
Thickness dependence of spin Peltier effect visualized by thermal imaging technique
Shunsuke Daimon, Ken-ichi Uchida, Naomi Ujiie +3
Magnon propagation length in a ferrimagnetic insulator yttrium iron garnet (YIG) has been investigated by measuring and analyzing the YIG-thickness t_YIG dependence of the spin Pel…
Efficient spin transport in a paramagnetic insulator
Koichi Oyanagi, Saburo Takahashi, Ludo J. Cornelissen +6
The discovery of new materials that efficiently transmit spin currents has been important for spintronics and material science. The electric insulator $\mathrm{Gd}_3\mathrm{Ga}_5\m…
Thermographic measurements of spin-current-induced temperature modulation in metallic bilayers
R. Iguchi, A. Yagmur, Y. -C. Lau +4
Spin-to-heat current conversion effects have been investigated in bilayer films consisting of a paramagnetic metal (PM; Pt, W, or Ta) and a ferromagnetic metal (FM; CoFeB or permal…
Magnetic-field-induced suppression of spin Peltier effect in Pt/ system at room temperature
Ryuichi Itoh, Ryo Iguchi, Shunsuke Daimon +3
We report the observation of magnetic-field-induced suppression of the spin Peltier effect (SPE) in a junction of a paramagnetic metal Pt and a ferrimagnetic insulator ${\rm Y_{3}F…
Thermographic measurements of the spin Peltier effect in metal/yttrium-iron-garnet junction systems
Shunsuke Daimon, Ken-ichi Uchida, Ryo Iguchi +2
The spin Peltier effect (SPE), heat-current generation due to spin-current injection, in various metal (Pt, W, and Au single layers and Pt/Cu bilayer)/ferrimagnetic insulator (yttr…
Concomitant enhancement of longitudinal spin Seebeck effect with thermal conductivity
Ryo Iguchi, Ken-ichi Uchida, Shunsuke Daimon +1
We report a simultaneous measurement of a longitudinal spin Seebeck effect (LSSE) and thermal conductivity in a Pt/ (YIG)/Pt system in a temperature range…
Thermal imaging of spin Peltier effect
Shunsuke Daimon, Ryo Iguchi, Tomosato Hioki +2
When a charge current is applied to a junction comprising two different conductors, its temperature increases or decreases depending on the direction of the charge current. This ph…
Critical suppression of spin Seebeck effect by magnetic fields
Takashi Kikkawa, Ken-ichi Uchida, Shunsuke Daimon +3
The longitudinal spin Seebeck effect (LSSE) in Pt/YFeO (YIG) junction systems has been investigated at various magnetic fields and temperatures. We found that the LS…
Sign of inverse spin Hall voltages generated by ferromagnetic resonance and temperature gradients in yttrium iron garnet|platinum bilayers
Michael Schreier, Gerrit E. W. Bauer, Vitaliy Vasyuchka +13
We carried out a concerted effort to determine the absolute sign of the inverse spin Hall effect voltage generated by spin currents injected into a normal metal. We focus on yttriu…