Ground State of the Easy-Axis Rare-Earth Kagome LangasitePr3Ga5SiO14

An intense photoemission feature is observed at a binding energy of ~10 eV in the UV photoemission spectra from the (0001) surfaces of bulk single crystals of rare-earth metals. This emission cannot be explained in terms of ground state electronic structure and we have been unable to attribute its existence to the presence of contamination of the surface. We present some evidence that may indicate its origin lies in the creation, by the photoemission process, of a metastable two-hole final state.

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The Effect Of Isovalent Substitution In The Rare-Earth Subsystem On Ground Magnetic State Of A Single Crystal La1.4sr1.6mn2o7

Siberian Journal of Physics ◽

10.54362/1818-7919-2015-10-4-95-99 ◽

2015 ◽

Vol 10 (4) ◽

pp. 95-99

Author(s):

Nikolay Pavlovskii ◽

Kirill Shaykhutdinov ◽

Andrey Dubrovskiy ◽

Mikhail Petrov ◽

Konstantin Terent’ev ◽

...

Keyword(s):

Magnetic Properties ◽

Rare Earth ◽

Ground State ◽

Sharp Increase ◽

Magnetic State ◽

Ferromagnetic State ◽

Metamagnetic Transition ◽

Isovalent Substitution ◽

Ground Magnetic ◽

Orbital Character

In this report we investigate changing of magnetic properties of system (La1-zNdz)1.4Sr1.6Mn2O7 during isovalent substitution from lanthanium to neodymium at different concentration z = 0, 0.3. Decreasing of Mn-Mn in-plane distance with increasing z leads to the suppression of the ferromagnetic state that, as expected, tells us about the change of the orbital character eg – electrons with 2 2 3z r d  on the 2 2 . x y d  Also, at high applied magnetic fields metamagnetic transition observed at concentration z = 0.3, it is characterized by a sharp increase of the magnetization and the change of the ground state of the sample from the antiferromagnetic to ferromagnetic.

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Pressure Effects on the Magnetic Phase Diagram of the CeNMSb2 (NM: Au and Ag): A DFT Study

Materials ◽

10.3390/ma13102237 ◽

2020 ◽

Vol 13 (10) ◽

pp. 2237

Author(s):

Mowafaq Mohammad Alsardia ◽

Jaekyung Jang ◽

Joo Yull Rhee

Keyword(s):

Ground State ◽

Noble Metals ◽

Easy Axis ◽

Magnetic Phase ◽

Magnetic Phase Diagram ◽

Pressure Effects ◽

Spin Orbit ◽

Magnetic Ground State ◽

Magnetic Easy Axis ◽

Spin Orbit Interactions

We explore the influence of pressure on the magnetic ground state of the heavy-fermion antiferromagnet (ferromagnet) CeAuSb 2 (CeAgSb 2 ) using first-principles calculations. The total-energy differences obtained by including the spin-orbit interactions and the on-site Coulomb potential for the Ce-derived 4f-orbitals are necessary to realize the accurate magnetic ground state of CeNMSb 2 (NM: Au and Ag). According to our results, the appearance of a new magnetic phase of CeAuSb 2 (CeAgSb 2 ) at the pressure of 2.1 GPa (3.5 GPa) is due to the rotation of the magnetic easy axis from the <001> to the <100> direction. Additionally, our data confirm that CeAgSb 2 is antiferromagnetic (AFM) above a critical pressure P c , and such a tendency is expected for CeAuSb 2 and remains to be seen. Through the spin-orbit-coupling Hamiltonian and detailed information on the occupation of individual 4f-orbitals of the Ce atom obtained by the electronic-structure calculations, we can deduce the rotation of the magnetic easy axis upon the application of pressure. According to the present and previous studies, the differences among the magnetic properties of CeNMSb 2 (NM: Cu, Ag and Au) compounds are not due to the different noble metals, but due to the subtle differences in the relative position of Ce atoms and, in turn, different occupations of Ce 4f-orbitals.

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ESR in Hexagonal ABX3-Type Antiferromagnets. I. Ground State Properties in Easy-Axis Anisotropy Case

Journal of the Physical Society of Japan ◽

10.1143/jpsj.60.2484 ◽

1991 ◽

Vol 60 (7) ◽

pp. 2484-2484 ◽

Cited By ~ 2

Author(s):

Hidekazu Tanaka ◽

Soichiro Teraoka ◽

Eiichiro Kakehashi ◽

Katsunori Iio ◽

Kazukiyo Nagata

Keyword(s):

Ground State ◽

Easy Axis ◽

Ground State Properties

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Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds

Nanoscale ◽

10.1039/d0nr04964f ◽

2020 ◽

Vol 12 (43) ◽

pp. 22258-22267

Author(s):

L. Fernandez ◽

M. Blanco-Rey ◽

R. Castrillo-Bodero ◽

M. Ilyn ◽

K. Ali ◽

...

Keyword(s):

Magnetic Properties ◽

Rare Earth ◽

Easy Axis ◽

Mixed Valence ◽

Electronic And Magnetic Properties ◽

Surface Compounds ◽

Out Of Plane

HoAu2, YbAu2 and GdAu2 surface compounds are investigated by electron spectroscopies, microscopy and theory. Yb in YbAu2 reveals a mixed valence character while Gd and Ho are trivalent. HoAu2 is ferromagnetic with an out-of-plane easy axis and TC = 22 K.

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Cross-Relaxation Depletion of the Ground State of Rare-Earth Ions in Crystals

Advanced Solid State Lasers ◽

10.1364/assl.1990.tnl4 ◽

1991 ◽

Author(s):

M. A. Noginov ◽

G. K. Sarkissian ◽

V. A. Smirnov ◽

I. A. Shcherbakov

Keyword(s):

Rare Earth ◽

Ground State ◽

Cross Relaxation ◽

Rare Earth Ions

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Deformation, pairing, and moments of inertia in ground-state bands of even-even rare-earth nuclei

Physical Review C ◽

10.1103/physrevc.48.r2158 ◽

1993 ◽

Vol 48 (5) ◽

pp. R2158-R2161 ◽

Cited By ~ 9

Author(s):

E. C. Halbert ◽

W. Nazarewicz

Keyword(s):

Rare Earth ◽

Ground State ◽

Moments Of Inertia ◽

Rare Earth Nuclei

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EXCEPTIONAL STRUCTURES IN THE ODD-ODD NUCLEUS 250Md

International Journal of Modern Physics E ◽

10.1142/s0218301300000258 ◽

2000 ◽

Vol 09 (04) ◽

pp. 309-317 ◽

Cited By ~ 5

Author(s):

P. C. SOOD ◽

M. SAINATH ◽

K. VENKATARAMANIAH

Keyword(s):

Rare Earth ◽

Energy Spectrum ◽

Ground State ◽

Low Energy ◽

Α Decay ◽

Decay Modes ◽

Proton Interaction ◽

Zero Range ◽

Singlet Band ◽

Rare Earth Nucleus

The low-energy two-quasiparticle bandhead energies for the odd-odd Z=101 nucleus 250 Md are evaluated using a zero range residual neutron-proton interaction. The 250Md ground state is seen to have the spin-parity Iπ=0- corresponding to the singlet band from the configuration {p : 7/2[514]⊗n:7/2[624]} in violation of the Gallagher-Moszkowski (GM) coupling rule. The situation here is shown to be almost identical to that for the rare-earth nucleus 166 Ho , which is the only well-established exception to the GM rule known so far. Analysis of the expected low energy spectrum, including the rotational levels, for 250 Md reveals the occurrence of an as-yet-unobserved long-lived high-spin Iπ = 7- isomeric state around (80±30) keV with dominant ε and α decay modes.

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