scholarly journals Co-existence of short- and long-range magnetic order in LaCo2P2

2021 ◽  
Author(s):  
Ola Kenji Forslund ◽  
Daniel Andreica ◽  
Hiroto Ohta ◽  
Masaki Imai ◽  
Chishiro Michioka ◽  
...  
Keyword(s):  
Long Range ◽  
First Principles ◽  
Magnetic Order ◽  
Muon Spin ◽  
Intrinsic Property ◽  
Muon Spin Rotation ◽  
Zero Field ◽  
First Principles Calculations ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

Abstract The ferromagnetic (FM) nature of the metallic LaCo2P2 was investigated with the positive muon spin rotation, relaxation and resonance (μ+SR) technique. Transverse and zero field μ+SR measurements revealed that the compound enters a long range FM ground state at TZFC = 135.00(1) K, consistent with previous studies. Based on the reported FM structure, the internal magnetic field was computed at the muon sites, which were predicted with first principles calculations. The computed result agree well with the experimental data. Moreover, although LaCo2P2 is a paramagnet at higher temperatures T > 160 K, it enters a short range ordered (SRO) magnetic phase for T ZF C < T ≤160 K. Measurements below the vicinity of T ZF C revealed that the SRO phase co-exists with the long range FM order at temperatures 124 K ≤T ≤T ZF C. Such co-existence is an intrinsic property and may be explained by an interplay between spin and lattice degree of freedoms.

scholarly journals Magnetism in semiconducting molybdenum dichalcogenides

2018 ◽  
Vol 4 (12) ◽  
pp. eaat3672 ◽  
Author(s):  
Z. Guguchia ◽  
A. Kerelsky ◽  
D. Edelberg ◽  
S. Banerjee ◽  
F. von Rohr ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Long Range ◽  
Density Functional ◽  
Magnetic Order ◽  
Muon Spin ◽  
Muon Spin Rotation ◽  
Scanning Tunneling ◽  
Spin Electronics ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

Transition metal dichalcogenides (TMDs) are interesting for understanding the fundamental physics of two-dimensional (2D) materials as well as for applications to many emerging technologies, including spin electronics. Here, we report the discovery of long-range magnetic order belowTM= 40 and 100 K in bulk semiconducting TMDs 2H-MoTe2and 2H-MoSe2, respectively, by means of muon spin rotation (μSR), scanning tunneling microscopy (STM), and density functional theory (DFT) calculations. The μSR measurements show the presence of large and homogeneous internal magnetic fields at low temperatures in both compounds indicative of long-range magnetic order. DFT calculations show that this magnetism is promoted by the presence of defects in the crystal. The STM measurements show that the vast majority of defects in these materials are metal vacancies and chalcogen-metal antisites, which are randomly distributed in the lattice at the subpercent level. DFT indicates that the antisite defects are magnetic with a magnetic moment in the range of 0.9 to 2.8 μB. Further, we find that the magnetic order stabilized in 2H-MoTe2and 2H-MoSe2is highly sensitive to hydrostatic pressure. These observations establish 2H-MoTe2and 2H-MoSe2as a new class of magnetic semiconductors and open a path to studying the interplay of 2D physics and magnetism in these interesting semiconductors.

scholarly journals Long-range magnetic order inCeRu2Al10studied via muon spin relaxation and neutron diffraction

2010 ◽  
Vol 82 (10) ◽  
Author(s):  
D. D. Khalyavin ◽  
A. D. Hillier ◽  
D. T. Adroja ◽  
A. M. Strydom ◽  
P. Manuel ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Long Range ◽  
Spin Relaxation ◽  
Magnetic Order ◽  
Muon Spin ◽  
Muon Spin Relaxation ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

scholarly journals Emergent long-range magnetic order in ultrathin (111)-oriented LaNiO3 films

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Margaret M. Kane ◽  
Arturas Vailionis ◽  
Lauren J. Riddiford ◽  
Apurva Mehta ◽  
Alpha T. N’Diaye ◽  
...  
Keyword(s):  
Long Range ◽  
Degrees Of Freedom ◽  
Magnetic Order ◽  
Magnetic Ordering ◽  
Anomalous Hall Effect ◽  
X Ray Diffraction ◽  
X Ray ◽  
Range Magnetic Order ◽  
Film Substrate ◽  
Long Range Magnetic Order

AbstractThe emergence of ferromagnetism in materials where the bulk phase does not show any magnetic order demonstrates that atomically precise films can stabilize distinct ground states and expands the phase space for the discovery of materials. Here, the emergence of long-range magnetic order is reported in ultrathin (111) LaNiO3 (LNO) films, where bulk LNO is paramagnetic, and the origins of this phase are explained. Transport and structural studies of LNO(111) films indicate that NiO6 octahedral distortions stabilize a magnetic insulating phase at the film/substrate interface and result in a thickness-dependent metal–insulator transition at t = 8 unit cells. Away from this interface, distortions relax and bulk-like conduction is regained. Synchrotron x-ray diffraction and dynamical x-ray diffraction simulations confirm a corresponding out-of-plane unit-cell expansion at the interface of all films. X-ray absorption spectroscopy reveals that distortion stabilizes an increased concentration of Ni2+ ions. Evidence of long-range magnetic order is found in anomalous Hall effect and magnetoresistance measurements, likely due to ferromagnetic superexchange interactions among Ni2+–Ni3+ ions. Together, these results indicate that long-range magnetic ordering and metallicity in LNO(111) films emerges from a balance among the spin, charge, lattice, and orbital degrees of freedom.

High-resolution polarization analysis study of long-range magnetic order in cuprates

2005 ◽  
Vol 71 (21) ◽  
Author(s):  
Zahirul Islam ◽  
D. Haskel ◽  
J. C. Lang ◽  
G. Srajer ◽  
X. Liu ◽  
...  
Keyword(s):  
High Resolution ◽  
Long Range ◽  
Magnetic Order ◽  
Polarization Analysis ◽  
Analysis Study ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

Gd substitutions in the TmCo2Laves phase: the onset of long-range magnetic order in the itinerant subsystem

1995 ◽  
Vol 7 (3) ◽  
pp. 597-610 ◽  
Author(s):  
E Gratz ◽  
R Hauser ◽  
A Lindbaum ◽  
M Maikis ◽  
R Resel ◽  
...  
Keyword(s):  
Long Range ◽  
Magnetic Order ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order
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