Temperature-, Light-, and Soft X-ray-Induced Spin Crossover in a Single Layer of FeII-Pyrazolylborate Molecules in Direct Contact with Gold

被引：37

作者：

Bairagi, Kaushik ^{[1
,5
]}

Bellec, Amandine ^{[1
]}

Fourmental, Cynthia ^{[1
,3
]}

Iasco, Olga ^{[2
]}

Lagoute, Jerome ^{[1
]}

Chacon, Cyril ^{[1
]}

Girard, Yann ^{[1
]}

Rousset, Sylvie ^{[1
]}

Choueikani, Fadi ^{[3
]}

Otero, Edwige ^{[3
]}

Ohresser, Philippe ^{[3
]}

Sainctavit, Philippe ^{[4
]}

Boillot, Marie-Laure ^{[2
]}

Mallah, Talal ^{[2
]}

Repain, Vincent ^{[1
]}

机构：

[1] Univ Paris Diderot, Sorbonne Paris Cite, Lab Mat Phenomenes Quant, CNRS,UMR 7162, F-75013 Paris, France

[2] Univ Paris Saclay, Univ Paris Sud, Inst Chim Mol Mat Orsay, CNRS,UMR 8182, F-91405 Orsay, France

[3] Synchrotron SOLEIL, St Aubin BP48, F-91192 Gif Sur Yvette, France

[4] Univ Paris 06, CNRS, UMR 7590, Inst Mineral Phys Mat & Cosmochim, Paris, France

[5] CIC nanoGUNE, Consolider Tolosa Hiribidea 76, Donostia San Sebastian 20018, Spain

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2018年 / 122卷 / 01期

关键词：

ROOM-TEMPERATURE; SOLID-SURFACE; COMPLEXES; FE(PHEN)(2)(NCS)(2); NANOPARTICLES; MEMRISTANCE; DEVICES; ROBUST; FILMS;

D O I：

10.1021/acs.jpcc.7b11874

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Understanding the properties of spin-crossover molecules in direct contact with metals is crucial for their future integration in electronic and spintronic devices. By X-ray absorption spectroscopy, we investigate the properties of Fe-II((3,5-(CH3)(2)Pz)(3)BH)(2) molecules in the form of monolayer islands on a metallic substrate, namely, Au(111). We demonstrate that the spin crossover transition can be thermally induced from the high spin state to a mixed spin state phase containing one-third of high-spin state and two-thirds of low-spin-state molecules in agreement with previous work by scanning tunneling microscopy. In addition, at 4.4 K, the spin crossover from the low spin state to the high spin state can also be induced by X-ray and by light excitations.

引用

页码：727 / 731

页数：5

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