Lian Liu

Ferromagnetic ordering in superatomic solids.

In order to realize significant benefits from the assembly of solid-state materials from molecular cluster superatomic building blocks, several criteria must be met. Reproducible syntheses must reliably produce macroscopic amounts of pure material; the cluster-assembled solids must show properties that are more than simply averages of those of the constituent subunits; and rational changes to the chemical structures of the subunits must result in predictable changes in the collective properties of the solid. In this report we show that we can meet these requirements. Using a combination of magnetometry and muon spin relaxation measurements, we demonstrate that crystallographically defined superatomic solids assembled from molecular nickel telluride clusters and fullerenes undergo a ferromagnetic phase transition at low temperatures. Moreover, we show that when we modify the constituent superatoms, the cooperative magnetic properties change in predictable ways.

(La1-xBax)(Zn1-xMnx)AsO: A two-dimensional 1111-type diluted magnetic semiconductor in bulk form

We employ NMR techniques to investigate the nature of Mn spins in the I-II-V diluted magnetic semiconductor Li(Zn1−xMnx)P (x = 0.1, Curie temperature Tc = 25 K). We successfully identify the Li NMR signals arising from the Li sites adjacent to Mn, and probe the static and dynamic properties of Mn spins. From the NMR spin-lattice relaxation data, we show that the Mn spin-spin interactions extend over many unit cells.

Unconventional Magnetic Ground State in Yb2Ti2O7

We report low temperature specific heat and muon spin relaxation/rotation (

Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 ( T=Co,Ni )

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Effect of interlayer coupling on the coexistence of antiferromagnetism and superconductivity in Fe pnictide superconductors: A study of Ca 0.74 ( 1 ) La 0.26 ( 1 ) ( Fe 1 − x Co x ) As 2 single crystals

SR) measurements on both polycrystalline and single crystal samples of the pyrochlore magnet Yb

The structural and magnetic phase transitions in Ca0.73La0.27FeAs2 with electron overdoped FeAs layers.

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Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning

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The synthesis and characterization of 1 1 1 1 type diluted ferromagnetic semiconductor (La(1-x)Ca(x))(Zn(1-x) Mn(x))AsO.

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Antiferromagnetism and hidden order in isoelectronic doping of URu2Si2

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ELECTRON SPECTROSCOPY OF STRONGLY CORRELATED ELECTRON MATERIALS—RECENT ISSUES AND RESULTS

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