168 citations · 1.4k across the 37 of their papers we have counts for
12 papers · 1 filter
Observation of nonlocal ferron-drag thermoelectricity
Takuma Itoh, Takamasa Hirai, Ping Tang +8
The Peltier effect induces a heat current when a charge current passes through a conductor. Since a charge current is conserved at the junction between two different conductors, th…
Quantitative noncontact measurement of thermal Hall angle and transverse thermal conductivity by lock-in thermography
Takumi Imamura, Takamasa Hirai, Koichi Oyanagi +4
We propose and demonstrate a quantitative noncontact measurement method for the thermal Hall effect (THE) based on magnetic-field-modulated lock-in thermography. This method enable…
Spin Peltier effect and its length scale in Pt/YIG system at high temperatures
Atsushi Takahagi, Takamasa Hirai, Ryo Iguchi +3
The temperature and yttrium-iron-garnet (YIG) thickness dependences of the spin Peltier effect (SPE) have been investigated using a Pt/YIG junction system at temperatures ranging f…
Excitations of the ferroelectric order
Ping Tang, Ryo Iguchi, Ken-ichi Uchida +1
We identify the bosonic excitations in ferroelectrics that carry electric dipoles from the phenomenological Landau-Ginzburg-Devonshire theory. The "ferron" quasi-particles emerge f…
Magnonics vs. Ferronics
Gerrit E. W. Bauer, Ping Tang, Ryo Iguchi +1
Magnons are the elementary excitations of the magnetic order that carry spin, momentum, and energy. Here we compare the magnon with the ferron, i.e. the elementary excitation of th…
The Ferroelectric Point Contact
Ping Tang, Ryo Iguchi, Ken-ichi Uchida +1
We formulate a scattering theory of polarization and heat transport through a ballistic ferroelectric point contact. We predict a polarization current under either an electric fiel…
Theory of Transport in Ferroelectric Capacitors
Gerrit E. W. Bauer, Ryo Iguchi, amd Ken-ichi Uchida
We present a time-dependent diffusion theory for heat and polarization transport in a planar ferroelectric capacitor with parameters derived from a one-dimensional phonon model. We…
Thermoelectric microscopy of magnetic skyrmions
Ryo Iguchi, Shinya Kasai, Kazushige Koshikawa +3
The magnetic skyrmion is a nanoscale topological object characterized by the winding of the magnetic moments, appearing in magnetic materials with broken inversion symmetry. Becaus…
Visualization of Anomalous Ettingshausen Effect in a Ferromagnetic Film: Direct Evidence of Different Symmetry from Spin Peltier Effect
T. Seki, R. Iguchi, K. Takanashi +1
Spatial distribution of temperature modulation due to anomalous Ettingshausen effect (AEE) is visualized in a ferromagnetic FePt thin film with in-plane and out-of-plane magnetizat…
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…
Hall detection of a ppm spin polarization
Dazhi Hou, Z. Qiu, R. Iguchi +4
Hall effects have been employed as sensitive detectors of magnetic fields and magnetizations. In spintronics, exotic phenomena often emerge from a non-equilibrium spin polarization…
Spin current generation from sputtered Y3Fe5O12 films
J. Lustikova, Y. Shiomi, Z. Qiu +4
Spin current injection from sputtered yttrium iron garnet (YIG) films into an adjacent platinum layer has been investigated by means of the spin pumping and the spin Seebeck effect…