TY - JOUR
T1 - Triplon current generation in solids
AU - Chen, Yao
AU - Sato, Masahiro
AU - Tang, Yifei
AU - Shiomi, Yuki
AU - Oyanagi, Koichi
AU - Masuda, Takatsugu
AU - Nambu, Yusuke
AU - Fujita, Masaki
AU - Saitoh, Eiji
N1 - Funding Information:
We thank D. Hirobe, T. Kikkawa, G. E. W. Bauer, and Y. Hirayama for valuable discussions. This research was supported by JST ERATO Spin Quantum Rectification Project (No. JPMJER1402), JPSP KAKENHI (the Grant-in-Aid for Scientific Research (S) No. JP19H05600 and JP17H06137; the Grant-in-Aid for Scientific Research (A) No. JP16H02125; the Grant-in-Aid for Scientific Research (B) No. JP20H01830 and No. JP19H02424; the Grant-in-Aid for Scientific Research (C) No. JP17K05513; the Grant-in-Aid for Challenging Research (Exploratory) No. JP19K22124 and No. JP20K20896; the Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) No. JP20H04631, No. JP20H05153, No. JP19H05825 and No.
Funding Information:
JP19H04683; the Grant-in-Aid for Research Activity start-up No. JP20K22476), JST CREST (No. JPMJCR20C1 and No. JPMJCR20T2), and MEXT (Innovative Area “Nano Spin Conversion Science” (No. 26103005)). Y.C., Y.T., and K.O. are supported by GP-Spin at Tohoku University. Y.C. is also supported by the Japan Society for Promotion of Science through a research fellowship for young scientists (No. JP18J21304).
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - A triplon refers to a fictitious particle that carries angular momentum S=1 corresponding to the elementary excitation in a broad class of quantum dimerized spin systems. Such systems without magnetic order have long been studied as a testing ground for quantum properties of spins. Although triplons have been found to play a central role in thermal and magnetic properties in dimerized magnets with singlet correlation, a spin angular momentum flow carried by triplons, a triplon current, has not been detected yet. Here we report spin Seebeck effects induced by a triplon current: triplon spin Seebeck effect, using a spin-Peierls system CuGeO3. The result shows that the heating-driven triplon transport induces spin current whose sign is positive, opposite to the spin-wave cases in magnets. The triplon spin Seebeck effect persists far below the spin-Peierls transition temperature, being consistent with a theoretical calculation for triplon spin Seebeck effects.
AB - A triplon refers to a fictitious particle that carries angular momentum S=1 corresponding to the elementary excitation in a broad class of quantum dimerized spin systems. Such systems without magnetic order have long been studied as a testing ground for quantum properties of spins. Although triplons have been found to play a central role in thermal and magnetic properties in dimerized magnets with singlet correlation, a spin angular momentum flow carried by triplons, a triplon current, has not been detected yet. Here we report spin Seebeck effects induced by a triplon current: triplon spin Seebeck effect, using a spin-Peierls system CuGeO3. The result shows that the heating-driven triplon transport induces spin current whose sign is positive, opposite to the spin-wave cases in magnets. The triplon spin Seebeck effect persists far below the spin-Peierls transition temperature, being consistent with a theoretical calculation for triplon spin Seebeck effects.
UR - http://www.scopus.com/inward/record.url?scp=85114038827&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85114038827&partnerID=8YFLogxK
U2 - 10.1038/s41467-021-25494-7
DO - 10.1038/s41467-021-25494-7
M3 - Article
C2 - 34465792
AN - SCOPUS:85114038827
VL - 12
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 5199
ER -