Electrical manipulation of spin states in a single electrostatically gated transition-metal complex
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Electrical manipulation of spin states in a single electrostatically gated transition-metal complex. / Osorio, Edgar A; Moth-Poulsen, Kasper; van der Zant, Herre S J; Paaske, Jens; Hedegård, Per; Flensberg, Karsten; Bendix, Jesper; Bjørnholm, Thomas.
In: Nano Letters, Vol. 10, No. 1, 01.01.2010, p. 105-10.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Electrical manipulation of spin states in a single electrostatically gated transition-metal complex
AU - Osorio, Edgar A
AU - Moth-Poulsen, Kasper
AU - van der Zant, Herre S J
AU - Paaske, Jens
AU - Hedegård, Per
AU - Flensberg, Karsten
AU - Bendix, Jesper
AU - Bjørnholm, Thomas
PY - 2010/1/1
Y1 - 2010/1/1
N2 - We demonstrate an electrically controlled high-spin (S = 5/2) to low-spin (S = 1/2) transition in a three-terminal device incorporating a single Mn(2+) ion coordinated by two terpyridine ligands. By adjusting the gate-voltage we reduce the terpyridine moiety and thereby strengthen the ligand-field on the Mn-atom. Adding a single electron thus stabilizes the low-spin configuration and the corresponding sequential tunnelling current is suppressed by spin-blockade. From low-temperature inelastic cotunneling spectroscopy, we infer the magnetic excitation spectrum of the molecule and uncover also a strongly gate-dependent singlet-triplet splitting on the low-spin side. The measured bias-spectroscopy is shown to be consistent with an exact diagonalization of the Mn-complex, and an interpretation of the data is given in terms of a simplified effective model.
AB - We demonstrate an electrically controlled high-spin (S = 5/2) to low-spin (S = 1/2) transition in a three-terminal device incorporating a single Mn(2+) ion coordinated by two terpyridine ligands. By adjusting the gate-voltage we reduce the terpyridine moiety and thereby strengthen the ligand-field on the Mn-atom. Adding a single electron thus stabilizes the low-spin configuration and the corresponding sequential tunnelling current is suppressed by spin-blockade. From low-temperature inelastic cotunneling spectroscopy, we infer the magnetic excitation spectrum of the molecule and uncover also a strongly gate-dependent singlet-triplet splitting on the low-spin side. The measured bias-spectroscopy is shown to be consistent with an exact diagonalization of the Mn-complex, and an interpretation of the data is given in terms of a simplified effective model.
U2 - 10.1021/nl9029785
DO - 10.1021/nl9029785
M3 - Journal article
C2 - 20000819
VL - 10
SP - 105
EP - 110
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 1
ER -
ID: 33697534