scholarly journals Magnetic Interaction between Surface-Engineered Rare-Earth Atomic Spins

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Chiung-Yuan Lin ◽  
Jheng-Lian Li ◽  
Yao-Hsien Hsieh ◽  
Keng-Liang Ou ◽  
B. A. Jones
Keyword(s):  
Rare Earth ◽  
Magnetic Interaction ◽  
Atomic Spins

scholarly journals Publisher’s Note: Magnetic Interaction between Surface-Engineered Rare-Earth Atomic Spins [Phys. Rev. X2, 021012 (2012)]

2012 ◽  
Vol 2 (3) ◽  
Author(s):  
Chiung-Yuan Lin ◽  
Jheng-Lian Li ◽  
Yao-Hsien Hsieh ◽  
Keng-Liang Ou ◽  
B. A. Jones
Keyword(s):  
Rare Earth ◽  
Magnetic Interaction ◽  
Atomic Spins

scholarly journals Solubility limit, magnetic interaction and conduction mechanism in rare earth doped spinel ferrite

2016 ◽  
Vol 2 (1) ◽  
pp. 3-11 ◽  
Author(s):  
Jitendra Pal Singh ◽  
◽  
Hemanut Kumar ◽  
R.C. Srivastava ◽  
Ayush Singhal ◽  
...  
Keyword(s):  
Rare Earth ◽  
Conduction Mechanism ◽  
Spinel Ferrite ◽  
Magnetic Interaction ◽  
Solubility Limit ◽  
Rare Earth Doped

scholarly journals Free coherent evolution of a coupled atomic spin system initialized by electron scattering

Science ◽  
2021 ◽  
Vol 372 (6545) ◽  
pp. 964-968
Author(s):  
Lukas M. Veldman ◽  
Laëtitia Farinacci ◽  
Rasa Rejali ◽  
Rik Broekhoven ◽  
Jérémie Gobeil ◽  
...  
Keyword(s):  
Magnetic Interaction ◽  
Scanning Tunneling ◽  
Local Magnetization ◽  
Tunneling Microscopy ◽  
Pump Probe ◽  
Atomic Spin ◽  
Spin Lattice ◽  
Atomic Spins ◽  
Insight Into ◽  
A Current

Full insight into the dynamics of a coupled quantum system depends on the ability to follow the effect of a local excitation in real-time. Here, we trace the free coherent evolution of a pair of coupled atomic spins by means of scanning tunneling microscopy. Rather than using microwave pulses, we use a direct-current pump-probe scheme to detect the local magnetization after a current-induced excitation performed on one of the spins. By making use of magnetic interaction with the probe tip, we are able to tune the relative precession of the spins. We show that only if their Larmor frequencies match, the two spins can entangle, causing angular momentum to be swapped back and forth. These results provide insight into the locality of electron spin scattering and set the stage for controlled migration of a quantum state through an extended spin lattice.

scholarly journals Topological RPdBi half-Heusler semimetals: A new family of noncentrosymmetric magnetic superconductors

2015 ◽  
Vol 1 (5) ◽  
pp. e1500242 ◽  
Author(s):  
Yasuyuki Nakajima ◽  
Rongwei Hu ◽  
Kevin Kirshenbaum ◽  
Alex Hughes ◽  
Paul Syers ◽  
...  
Keyword(s):  
Rare Earth ◽  
Normal State ◽  
Magnetic Interaction ◽  
Superconducting Transition ◽  
New Family ◽  
Simultaneous Control ◽  
Band Inversion ◽  
Lattice Density ◽  
Topological Semimetals ◽  
Superconducting Pairing

We report superconductivity and magnetism in a new family of topological semimetals, the ternary half-Heusler compound RPdBi (R: rare earth). In this series, tuning of the rare earth f-electron component allows for simultaneous control of both lattice density via lanthanide contraction and the strength of magnetic interaction via de Gennes scaling, allowing for a unique tuning of the normal-state band inversion strength, superconducting pairing, and magnetically ordered ground states. Antiferromagnetism with ordering vector (½,½,½) occurs below a Néel temperature that scales with de Gennes factor dG, whereas a superconducting transition is simultaneously supressed with increasing dG. With superconductivity appearing in a system with noncentrosymmetric crystallographic symmetry, the possibility of spin-triplet Cooper pairing with nontrivial topology analogous to that predicted for the normal-state electronic structure provides a unique and rich opportunity to realize both predicted and new exotic excitations in topological materials.

Influence of Magnetic Interaction on Nuclear Orientation of Cobalt-60 in Rare-Earth Double Nitrates

1961 ◽  
Vol 121 (2) ◽  
pp. 538-546 ◽  
Author(s):  
M. W. Levi ◽  
R. C. Sapp ◽  
J. W. Culvahouse
Keyword(s):  
Rare Earth ◽  
Nuclear Orientation ◽  
Magnetic Interaction

The atomic heats of the rare-earth elements

1951 ◽  
Vol 207 (1089) ◽  
pp. 137-155 ◽  
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Electric Fields ◽  
Temperature Anomaly ◽  
Magnetic Interaction ◽  
Hexagonal Close Packed ◽  
Large Hysteresis ◽  
Heat Curve ◽  
Rare Earth Salts ◽  
Atomic Heat

The atomic heats of lanthanum, cerium, praseodymium and neodymium have been measured from 2 to 180° K. Lanthanum shows an anomaly corresponding to superconductivity at 4⋅37° K, and the atomic heat (C D ) rises to 6⋅2 cal./g. atom at 180° K. The free electronic specific heat deduced from the low-temperature results appears to explain this high value satisfactorily. Cerium, praseodymium and neodymium all behave anomalously. A specimen of cerium of face-centred cubic structure shows an anomaly between 90 and 180° K which exhibits large hysteresis effects. Taking into account the results of other research workers which have been published since this work was begun, this anomaly appears to correspond to the transition of the 4 f electron to a 5 d state. A second specimen of cerium in which both face-centred cubic and hexagonal close-packed structures were present did not show this anomaly. Both specimens, however, showed large anomalous humps in the low-temperature region at approximately 12° K. Praseodymium shows a very large distributed anomaly which produced a maximum in the atomic heat curve at 65° K. Neodymium shows two anomalous peaks, one at 7⋅5° K and one at 19° K. These anomalies in praseodymium and neodymium, together with the low-temperature anomaly in cerium, can be explained qualitatively by the view that the electronic states attributable to the 4 f .electrons are split by the electric fields existing within the metallic crystals. This effect is more complicated than with the magnetically dilute hydrated rare-earth salts, as magnetic interaction is probably very important.

Characterization of Rare-Earth Fluoride Anti-Stokes Phosphors by Scanning arid Transmission Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 142-143
Author(s):  
N. M. P. Low ◽  
L. E. Brosselard
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Elevated Temperatures ◽  
Stoichiometric Composition ◽  
Rare Earth Ions ◽  
Crystalline Solid ◽  
Precipitation Process ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Rare Earth Fluorides

There has been considerable interest over the past several years in materials capable of converting infrared radiation to visible light by means of sequential excitation in two or more steps. Several rare-earth trifluorides (LaF3, YF3, GdF3, and LuF3) containing a small amount of other trivalent rare-earth ions (Yb3+ and Er3+, or Ho3+, or Tm3+) have been found to exhibit such phenomenon. The methods of preparation of these rare-earth fluorides in the crystalline solid form generally involve a co-precipitation process and a subsequent solid state reaction at elevated temperatures. This investigation was undertaken to examine the morphological features of both the precipitated and the thermally treated fluoride powders by both transmission and scanning electron microscopy.Rare-earth oxides of stoichiometric composition were dissolved in nitric acid and the mixed rare-earth fluoride was then coprecipitated out as fine granules by the addition of excess hydrofluoric acid. The precipitated rare-earth fluorides were washed with water, separated from the aqueous solution, and oven-dried.

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