Magnetic properties of large Co clusters

Structural and magnetic properties of large cobalt clusters.
Jaime Souto-Casares, Masahiro Sakurai, and James R. Chelikowsky
Phys. Rev. B 93, 174418 (2016)

Local magnetic moment per atom with respect to the coordination number. Error bars represent the minimum and maximum value. Each set of points has been fitted to a line. A miniature of the specific cluster is shown, with the color map representing the individual local magnetic moment growing in the upper direction.

Singl adatoms with thermal stability

Ordered Array of Single Adatoms with Remarkable Thermal Stability: Au/Fe3O4(001)
Zbynek Novotny, Giacomo Argentero, Zhiming Wang, Michael Schmid, Ulrike Diebold, and Gareth S. Parkinson
Phys. Rev. Lett. 108, 216103 (2012)

Spin and orbital moments in Fe clusters

Spin Coupling and Orbital Angular Momentum Quenching in Free Iron Clusters.
M. Niemeyer,1,2 K. Hirsch,1,2 V. Zamudio-Bayer,1,2 A. Langenberg,1,2 M. Vogel,1 M. Kossick,1,2 C. Ebrecht, K. Egashira,3 A. Terasaki,4,5 T. Mo¨ ller,2 B. v. Issendorff,6 and J. T. Lau
Phys. Rev. Lett. 108, 057201 (2012)

 Relative spin (filled circles) and orbital (open circles) magnetic moments of Fe+ n clusters normalized to the atomic values (muS= 4 muB and muL= 2 muB). While the spin moment remains at 60%–90%, the orbital value is strongly reduced already for Fe3+ .

Dipolar interactions and Anisotropy effects in small clusters

Effect of anisotropy on small magnetic clusters.
Alfred Hucht, Sanjubala Sahoo, Shreekantha Sil, and Peter Entel
Phys. Rev. B 84, 104438 (2011)

Schematic picture of ICO (left) and CUBO (right) with labeling of each atomic site.

SG behavior and Kondo effect

Kondo effect and spin-glass behavior of dilute iron clusters in silver films.
W. T. Herrera, Y. T. Xing, S. M. Ramos, P. Munayco, M. B. Fontes, E. M. Baggio-Saitovitch, and F. J. Litterst
PRB 84, 014430 (2011)

Onset temperature Ton for spin freezing, derived from resistivity data, for samples prepared at 285 K.

Ferromagnetism of free clusters

Metastability of Free Cobalt and Iron Clusters: A Possible Precursor to Bulk Ferromagnetism.
Xiaoshan Xu, Shuangye Yin, Ramiro Moro, Anthony Liang, John Bowlan, and Walt A. de Heer
Phys. Rev. Lett. 107, 057203 (2011)

P(M) for Co and Fe clusters for various thermalization conditions. Amplitudes are represented in color (blue:
low; red: high).