2014
DOI: 10.1021/nn500409u
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Exchange Interaction of Strongly Anisotropic Tripodal Erbium Single-Ion Magnets with Metallic Surfaces

Abstract: We present a comprehensive study of Er(trensal) single-ion magnets deposited in ultrahigh vacuum onto metallic surfaces. X-ray photoelectron spectroscopy reveals that the molecular structure is preserved after sublimation, and that the molecules are physisorbed on Au(111) while they are chemisorbed on a Ni thin film on Cu(100) single-crystalline surfaces. X-ray magnetic circular dichroism (XMCD) measurements performed on Au(111) samples covered with molecular monolayers held at temperatures down to 4 K suggest… Show more

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Cited by 41 publications
(32 citation statements)
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“…1) are in very good agreement with the spectra simulated for the 4f 11 configuration as well as with previous reports for trivalent Er [30,51]. The relative amplitudes of the multiplet peaks within the M 5 edge vary with the substrate due to the presence of a different ligand environment.…”
Section: A 4 F Occupancy Of Re Adatomssupporting
confidence: 91%
“…1) are in very good agreement with the spectra simulated for the 4f 11 configuration as well as with previous reports for trivalent Er [30,51]. The relative amplitudes of the multiplet peaks within the M 5 edge vary with the substrate due to the presence of a different ligand environment.…”
Section: A 4 F Occupancy Of Re Adatomssupporting
confidence: 91%
“…These values vastly exceed the corresponding records reported for any surface-adsorbed SMM [4][5][6][7][8][9][10][11][12][13]26 ] as well as the ones reported for bulk TbPc 2 . [ 20 ] The large remanence indicates that quantum tunneling of magnetization is strongly suppressed for fi elds below 3 T, with only a very subtle modulation of the relaxation rate across the hysteresis loop.…”
mentioning
confidence: 48%
“…Overall, the detailed knowledge on TbPc 2 makes it an ideal candidate to test if a tunnel barrier can boost the magnetic properties of surface-adsorbed SMMs. In this communication we show that the magnetic remanence and hysteresis opening obtained with TbPc 2 on MgO tunnel barriers outperform the ones of any other surface-adsorbed SMM [4][5][6][7][8][9][10][11][12][13]26 ] as well as those of bulk samples of TbPc 2 . [ 20 ] The scanning tunneling microscopy (STM) images in Figure 1 b,c show that TbPc 2 self-assembles by forming perfectly ordered 2D islands on two monolayers (MLs) of MgO on Ag(100).…”
mentioning
confidence: 99%
“…Out of the Ln(trensal) family [58,108,110,111], the Er(trensal) SIM was studied in the monolayer regime on Au (1 1 1) and Ni/Cu(1 0 0) surfaces [180]. The shape of the ligand is tripodal with the three legs being linked at an apex nitrogen atom as described in section 4.2.…”
Section: Ln(trensal)mentioning
confidence: 99%