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@ARTICLE{Choi:1009108,
author = {Choi, Young-Gwan and Jo, Daegeun and Ko, Kyung-Hun and Go,
Dongwook and Kim, Kyung-Han and Park, Hee Gyum and Kim,
Changyoung and Min, Byoung-Chul and Choi, Gyung-Min and Lee,
Hyun-Woo},
title = {{O}bservation of the orbital {H}all effect in a light metal
{T}i},
journal = {Nature},
volume = {619},
number = {7968},
issn = {0028-0836},
address = {London [u.a.]},
publisher = {Nature Publ. Group},
reportid = {FZJ-2023-02639},
pages = {52 - 56},
year = {2023},
abstract = {The orbital Hall effect1 refers to the generation of
electron orbital angular momentum flow transverse to an
external electric field. Contrary to the common belief that
the orbital angular momentum is quenched in solids,
theoretical studies2,3 predict that the orbital Hall effect
can be strong and is a fundamental origin of the spin Hall
effect4,5,6,7 in many transition metals. Despite the growing
circumstantial evidence8,9,10,11, its direct detection
remains elusive. Here we report the magneto-optical
observation of the orbital Hall effect in the light metal
titanium (Ti). The Kerr rotation by the orbital magnetic
moment accumulated at Ti surfaces owing to the orbital Hall
current is measured, and the result agrees with theoretical
calculations semi-quantitatively and is supported by the
orbital torque12 measurement in Ti-based magnetic
heterostructures. This result confirms the orbital Hall
effect and indicates that the orbital angular momentum is an
important dynamic degree of freedom in solids. Moreover,
this calls for renewed studies of the orbital effect on
other degrees of freedom such as spin2,3,13,14, valley15,16,
phonon17,18,19 and magnon20,21 dynamics.},
cin = {PGI-1 / IAS-1},
ddc = {500},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406},
pnm = {5211 - Topological Matter (POF4-521)},
pid = {G:(DE-HGF)POF4-5211},
typ = {PUB:(DE-HGF)16},
pubmed = {37407680},
UT = {WOS:001024763800012},
doi = {10.1038/s41586-023-06101-9},
url = {https://juser.fz-juelich.de/record/1009108},
}