Direct observation of high-spin states in manganese dimer and trimer cations by x-ray magnetic circular dichroism spectroscopy in an ion trap

被引：24

作者：

Zamudio-Bayer, V. ^{[1
,2
]}

Hirsch, K. ^{[2
,3
]}

Langenberg, A. ^{[2
,3
]}

Kossick, M. ^{[2
,3
]}

Lawicki, A. ^{[2
]}

Terasaki, A. ^{[4
,5
]}

v Issendorff, B. ^{[1
]}

Lau, J. T. ^{[2
]}

机构：

[1] Univ Freiburg, Phys Inst, D-79104 Freiburg, Germany

[2] Helmholtz Zentrum Berlin Mat & Energie GmbH, Inst Methoden & Instrumentierung Forsch Synchrotr, D-12489 Berlin, Germany

[3] Tech Univ Berlin, Inst Opt & Atomare Phys, D-10623 Berlin, Germany

[4] Toyota Technol Inst, Cluster Res Lab, Ichikawa, Chiba 2720001, Japan

[5] Kyushu Univ, Dept Chem, Higashi Ku, Fukuoka 8128581, Japan

来源：

JOURNAL OF CHEMICAL PHYSICS | 2015年 / 142卷 / 23期

关键词：

ELECTRONIC STATES; GROUND-STATE; CLUSTER IONS; MN-N; TRANSITION; SPECTRA; PHOTODISSOCIATION; CHROMIUM; RESONANCE; ENERGY;

D O I：

10.1063/1.4922487

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：

The electronic structure and magnetic moments of free Mn-2(+) and Mn-3(+) are characterized by 2p x-ray absorption and x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap that is coupled to a synchrotron radiation beamline. Our results directly show that localized magnetic moments of 5 mu(B) are created by 3d(5)(S-6) states at each ionic core, which are coupled ferromagnetically to form molecular high-spin states via indirect exchange that is mediated in both cases by a delocalized valence electron in a singly occupied 4s derived antibonding molecular orbital with an unpaired spin. This leads to total magnetic moments of 11 mu(B) for Mn-2(+) and 16 mu(B) for Mn-3(+), with no contribution of orbital angular momentum. (C) 2015 AIP Publishing LLC.

引用

页数：6

共 76 条

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