We report broadband spin-wave spectroscopy on kagome artificial spin ices (KASIs) made of large arrays of disconnected Ni81Fe19 400-nm-long nanobars. We observed spin wave spectra that varied characteristically upon the separation between neighboring nanobars. The dipolar coupling within the KASI is analyzed in terms of a configuration-dependent bias field. It varies between about 30 and 40 mT for nearest-neighbor separations of 300 and 60 nm, respectively. Similarly to interconnected KASIs, we reprogram the spin wave spectra by means of a specific field protocol. The disconnected KASIs are promising for reprogramable spin wave guiding in underlayers.

1.
R.
Wang
,
C.
Nisoli
,
R.
Freitas
,
J.
Li
,
W.
McConville
,
B.
Cooley
,
M.
Lund
,
N.
Samarth
,
C.
Leighton
,
V.
Crespi
 et al,
Nature
439
,
303
(
2006
).
2.
Y.
Qi
,
T.
Brintlinger
, and
J.
Cumings
,
Phys. Rev. B
77
,
094418
(
2008
).
3.
X.
Zhou
,
G.-L.
Chua
,
N.
Singh
, and
A. O.
Adeyeye
,
Adv. Funct. Mater.
26
,
1437
(
2016
).
4.
M.
Krawczyk
and
D.
Grundler
,
J. Phys.: Condens. Matter
26
,
123202
(
2014
).
5.
P.
Mellado
,
O.
Petrova
,
Y.
Shen
, and
O.
Tchernyshyov
,
Phys. Rev. Lett.
105
,
187206
(
2010
).
6.
S.
Ladak
,
D.
Read
,
G.
Perkins
,
L.
Cohen
, and
W.
Branford
,
Nat. Phys.
6
,
359
(
2010
).
7.
V.
Bhat
,
F.
Heimbach
,
I.
Stasinopoulos
, and
D.
Grundler
,
Phys. Rev. B
93
,
140401
(
2016
).
8.
E.
Mengotti
,
L. J.
Heyderman
,
A. F.
Rodríguez
,
F.
Nolting
,
R. V.
Hügli
, and
H.-B.
Braun
,
Nat. Phys.
7
,
68
(
2011
).
9.
S.
Gliga
,
A.
Kákay
,
R.
Hertel
, and
O. G.
Heinonen
,
Phys. Rev. Lett.
110
,
117205
(
2013
).
10.
D. M.
Arroo
,
J. C.
Gartside
, and
W. R.
Branford
,
Phys. Rev. B
100
,
214425
(
2019
).
11.
S.
Gliga
,
E.
Iacocca
, and
O. G.
Heinonen
,
APL Mater.
8
,
040911
(
2020
).
12.
L.
Heyderman
and
R.
Stamps
,
J. Phys.: Condens. Matter
25
,
363201
(
2013
).
13.
M.
Jungfleisch
,
W.
Zhang
,
E.
Iacocca
,
J.
Sklenar
,
J.
Ding
,
W.
Jiang
,
S.
Zhang
,
J.
Pearson
,
V.
Novosad
,
J.
Ketterson
 et al,
Phys. Rev. B
93
,
100401
(
2016
).
14.
V.
Bhat
,
S.
Watanabe
,
K.
Baumgaertl
,
A.
Kleibert
,
M.
Schoen
,
C.
Vaz
, and
D.
Grundler
,
Phys. Rev. Lett.
125
,
117208
(
2020
).
15.
E.
Iacocca
,
S.
Gliga
, and
O. G.
Heinonen
,
Phys. Rev. Appl.
13
,
044047
(
2020
).
16.
M.
Donahue
and
D.
Porter
,
Interagency Report No. NISTIR 6376
,
1999
.
17.
A. G.
Gurevich
and
G. A.
Melkov
,
Magnetization Oscillations and Waves
(
CRC Press
,
1996
).
18.
V. S.
Bhat
,
F.
Heimbach
,
I.
Stasinopoulos
, and
D.
Grundler
,
Phys. Rev. B
96
,
014426
(
2017
).
19.
C.
Castelnovo
,
R.
Moessner
, and
S. L.
Sondhi
,
Nature
451
,
42
(
2008
).
20.
A.
Aharoni
,
J. Appl. Phys.
83
,
3432
(
1998
).
21.
A.
Talapatra
,
N.
Singh
, and
A.
Adeyeye
,
Phys. Rev. Appl.
13
,
014034
(
2020
).
22.
W.
Bang
,
J.
Sturm
,
R.
Silvani
,
M. T.
Kaffash
,
A.
Hoffmann
,
J. B.
Ketterson
,
F.
Montoncello
, and
M. B.
Jungfleisch
,
Phys. Rev. Appl.
14
,
014079
(
2020
).
23.
T.
Dion
,
D.
Arroo
,
K.
Yamanoi
,
T.
Kimura
,
J.
Gartside
,
L.
Cohen
,
H.
Kurebayashi
, and
W.
Branford
,
Phys. Rev. B
100
,
054433
(
2019
).
24.
V. S.
Bhat
and
D.
Grundler
Tuning interactions in reconfigurable kagome artificial spin ices for magnonics
,”
Zenodo
(
2021
). .
You do not currently have access to this content.