TY - JOUR
T1 - Dynamical spin-to-charge conversion on the edge of quantum spin Hall insulator
AU - Araki, Yasufumi
AU - Misawa, Takahiro
AU - Nomura, Kentaro
N1 - Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/5
Y1 - 2020/5
N2 - We theoretically show that the edge of a quantum spin Hall insulator (QSHI), attached to an insulating ferromagnet (FM), can realize a highly efficient spin-to-charge conversion. Based on a one-dimensional QSHI-FM junction, the electron dynamics on the QSHI edge is analyzed, driven by a magnetization dynamics in the FM. Under a large gap opening on the edge from the magnetic exchange coupling, we find that the spin injection into the QSHI edge gets suppressed while the charge current driven on the edge gets maximized, demanded by the band topology of the one-dimensional helical edge states.
AB - We theoretically show that the edge of a quantum spin Hall insulator (QSHI), attached to an insulating ferromagnet (FM), can realize a highly efficient spin-to-charge conversion. Based on a one-dimensional QSHI-FM junction, the electron dynamics on the QSHI edge is analyzed, driven by a magnetization dynamics in the FM. Under a large gap opening on the edge from the magnetic exchange coupling, we find that the spin injection into the QSHI edge gets suppressed while the charge current driven on the edge gets maximized, demanded by the band topology of the one-dimensional helical edge states.
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U2 - 10.1103/PhysRevResearch.2.023195
DO - 10.1103/PhysRevResearch.2.023195
M3 - Article
AN - SCOPUS:85104737085
SN - 2643-1564
VL - 2
JO - Physical Review Research
JF - Physical Review Research
IS - 2
M1 - 023195
ER -