Chemically induced magnetism in atomically precise gold clusters

Katla Sai Krishna; Pilarisetty Tarakeshwar; Vladimiro Mujica; Challa S.S.R. Kumar

doi:10.1002/smll.201302393

Chemically induced magnetism in atomically precise gold clusters

Katla Sai Krishna, Pilarisetty Tarakeshwar, Vladimiro Mujica, Challa S.S.R. Kumar

Arizona State University

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Comparative theoretical and experimental investigations are reported into chemically induced magnetism in atomically-precise, ligand-stabilized gold clusters Au₂₅, Au₃₈ and Au₅₅. The results indicate that [Au₂₅(PPh₃)₁₀(SC ₁₂H₂₅)₅Cl₂]²⁺ and Au ₃₈(SC₁₂H₂₅)₂₄ are diamagnetic, Au₂₅(SC₂H₄Ph)₁₈ is paramagnetic, and Au₅₅(PPh₃)₁₂Cl₆, is ferromagnetic at room temperature. Understanding the magnetic properties resulting from quantum size effects in such atomically precise gold clusters could lead to new fundamental discoveries and applications.

Original language	English
Pages (from-to)	907-911
Number of pages	5
Journal	Small
Volume	10
Issue number	5
DOIs	https://doi.org/10.1002/smll.201302393
Publication status	Published - Mar 12 2014

Keywords

Atomically-precise gold clusters
DFT calculations
SQUID
magnetism
surface magnetism

ASJC Scopus subject areas

Biotechnology
Biomaterials
Chemistry(all)
Materials Science(all)

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title = "Chemically induced magnetism in atomically precise gold clusters",

abstract = "Comparative theoretical and experimental investigations are reported into chemically induced magnetism in atomically-precise, ligand-stabilized gold clusters Au25, Au38 and Au55. The results indicate that [Au25(PPh3)10(SC 12H25)5Cl2]2+ and Au 38(SC12H25)24 are diamagnetic, Au25(SC2H4Ph)18 is paramagnetic, and Au55(PPh3)12Cl6, is ferromagnetic at room temperature. Understanding the magnetic properties resulting from quantum size effects in such atomically precise gold clusters could lead to new fundamental discoveries and applications.",

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AU - Tarakeshwar, Pilarisetty

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AU - Kumar, Challa S.S.R.

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AB - Comparative theoretical and experimental investigations are reported into chemically induced magnetism in atomically-precise, ligand-stabilized gold clusters Au25, Au38 and Au55. The results indicate that [Au25(PPh3)10(SC 12H25)5Cl2]2+ and Au 38(SC12H25)24 are diamagnetic, Au25(SC2H4Ph)18 is paramagnetic, and Au55(PPh3)12Cl6, is ferromagnetic at room temperature. Understanding the magnetic properties resulting from quantum size effects in such atomically precise gold clusters could lead to new fundamental discoveries and applications.

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