@article{6238715f2a4a46f6b55746e9470905ec,
title = "One-dimensional spinon spin currents",
abstract = "Quantum spin fluctuation in a low-dimensional or frustrated magnet breaks magnetic ordering while keeping spin correlation. Such fluctuation has been a central topic in magnetism because of its relevance to high-T c superconductivity and topological states. However, utilizing such spin states has been quite difficult. In a one-dimensional spin-1/2 chain, a particle-like excitation called a spinon is known to be responsible for spin fluctuation in a paramagnetic state. Spinons behave as a Tomonaga-Luttinger liquid at low energy, and the spin system is often called a quantum spin chain. Here we show that a quantum spin chain generates and carries spin current, which is attributed to spinon spin current. This is demonstrated by observing an anisotropic negative spin Seebeck effect along the spin chains in Sr 2 CuO 3. The results show that spin current can flow even in an atomic channel owing to long-range spin fluctuation.",
author = "Daichi Hirobe and Masahiro Sato and Takayuki Kawamata and Yuki Shiomi and Uchida, {Ken Ichi} and Ryo Iguchi and Yoji Koike and Sadamichi Maekawa and Eiji Saitoh",
note = "Funding Information: We thank Y. Ohnuma, N. Yokoi and K. Sato for valuable discussions. This work is supported by ERATO-JST {\textquoteleft}Spin Quantum Rectification Project{\textquoteright}, Japan, Grant-in-Aid for Scientific Research on Innovative Area {\textquoteleft}Nano Spin Conversion Science{\textquoteright} (No. 26103005), PRESTO {\textquoteleft}Phase Interfaces for Highly Efficient Energy Utilization{\textquoteright} from JST, Japan, Grant-in-Aid for Challenging Exploratory Research (No. 16K13827), and Grant-in-Aid for Scientific Research (A) (No. 15H02012) from MEXT, Japan. D.H. is supported by the Yoshida Scholarship Foundation through the Doctor 21 programme. Funding Information: This work is supported by ERATO-JST 'Spin Quantum Rectification Project', Japan, Grant-in-Aid for Scientific Research on Innovative Area 'Nano Spin Conversion Science' (No. 26103005), PRESTO 'Phase Interfaces for Highly Efficient Energy Utilization' from JST, Japan, Grant-in-Aid for Challenging Exploratory Research (No. 16K13827), and Grant-in-Aid for Scientific Research (A) (No. 15H02012) from MEXT, Japan. D.H. is supported by the Yoshida Scholarship Foundation through the Doctor 21 programme. Publisher Copyright: {\textcopyright} Macmillan Publishers Limited. All rights reserved.",
year = "2017",
month = jan,
day = "5",
doi = "10.1038/nphys3895",
language = "English",
volume = "13",
pages = "30--34",
journal = "Nature Physics",
issn = "1745-2473",
publisher = "Nature Publishing Group",
number = "1",
}