Showing 2014 · cond-mat.mtrl-sciShow all

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cond-mat.mtrl-sci2014★ 43 cited

Influence of interface condition on spin-Seebeck effects

Z. Qiu, D. Hou, K. Uchida +1

The longitudinal spin-Seebeck effect (LSSE) has been investigated for Pt/yttrium iron garnet (YIG) bilayer systems. The magnitude of the voltage induced by the LSSE is found to be…

cond-mat.mtrl-sci2014★ 98 cited

Quantitative Temperature Dependence of Longitudinal Spin Seebeck Effect at High Temperatures

Ken-ichi Uchida, Takashi Kikkawa, Asuka Miura +2

This article reports temperature-dependent measurements of longitudinal spin Seebeck effects (LSSEs) in Pt/YFeO (YIG)/Pt systems in a high temperature range from roo…

cond-mat.mtrl-sci2014★ 187 cited

Quantum Hall Effect on Top and Bottom Surface States of Topological Insulator (Bi1-xSbx)2Te3 Films

R. Yoshimi, A. Tsukazaki, Y. Kozuka +6

The three-dimensional (3D) topological insulator (TI) is a novel state of matter as characterized by two-dimensional (2D) metallic Dirac states on its surface. Bi-based chalcogenid…

cond-mat.mtrl-sci2014★ 9 cited

Terahertz radiation by optical rectification in a hydrogen-bonded organic molecular ferroelectric crystal, 2-phenylmalondialdehyde

W. Guan, N. Kida, M. Sotome +5

Terahertz radiation by optical rectification has been observed at room temperature in a hydrogen-bonded organic molecular ferroelectric crystal, 2-phenyl malondialdehyde (PhMDA). T…

cond-mat.mtrl-sci2014★ 59 cited

Atomistic mechanism of perfect alignment of nitrogen-vacancy centers in diamond

Takehide Miyazaki, Yoshiyuki Miyamoto, Toshiharu Makino +7

Nitrogen-vacancy (NV) centers in diamond have attracted a great deal of attention because of their possible use in information processing and electromagnetic sensing technologies.…

cond-mat.mtrl-sci2014★ 48 cited

Spin Hall effect by surface roughness

Lingjun Zhou, Vahram L. Grigoryan, Sadamichi Maekawa +2

The spin Hall effect and its inverse effect, caused by the spin orbit interaction, provide the interconversion between spin current and charge current. Since the effects make it po…

cond-mat.mtrl-sci2014★ 4 cited

Inelastic electron tunneling spectroscopy of nanoporous gold films

H. W. Liu, R. Nishitani, T. Fujita +8

We investigated the localized electronic properties of nanoporous gold films by using an ultra-high vacuum scanning tunneling microscope at low temperature (4.2 K). Second derivati…

cond-mat.mtrl-sci2014★ 125 cited

Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc

Yuichi Ohnuma, Hiroto Adachi, Eiji Saitoh +1

A linear-response formulation of the dc spin pumping, i.e., a spin injection from a precessing ferromagnet into an adjacent spin sink, is developed in view of describing many-body…

cond-mat.mtrl-sci2014★ 22 cited

Sign change of the spin Hall effect due to electron correlation in nonmagnetic CuIr alloys

Zhuo Xu, Bo Gu, Michiyasu Mori +2

Recently a positive spin Hall angle (SHA) of 0.021, was observed experimentally in nonmagnetic CuIr alloys [Niimi et al., Phys. Rev. Lett. 106, 126601 (2011)] and attributed predom…

cond-mat.mtrl-sci2014★ 62 cited

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…

cond-mat.mtrl-sci2014

Novel linear algebraic theory and one-hundred-million-atom quantum material simulations on the K computer

Takeo Hoshi, Tomohiro Sogabe, Takafumi Miyatad +7

The present paper gives a review of our recent progress and latest results for novel linear-algebraic algorithms and its application to large-scale quantum material simulations or…

cond-mat.mtrl-sci2014★ 10 cited

Enhanced spin Hall effect by electron correlations in CuBi alloys

Bo Gu, Zhuo Xu, Michiyasu Mori +2

A recent experiment in CuBi alloys obtained a large spin Hall angle (SHA) of -0.24 (Niimi et al. Phys. Rev. Lett. 109, 156602 (2012)). We find that the SHA can be dramatically enha…

cond-mat.mtrl-sci2014★ 59 cited

Polarization Switching Ability Dependent on Multidomain Topology in a Uniaxial Organic Ferroelectric

F. Kagawa, S. Horiuchi, N. Minami +5

The switching of electric polarization induced by electric fields -a fundamental functionality of ferroelectrics- is closely associated with the motions of the domain walls that se…