Consequences of magnetic ordering in chiral 
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Karna, Sunil K.; Womack, F. N.; Chapai, Ramakanta; Young, David P.; Marshall, Milton V.; Xie, Weiwei; Graf, David; Wu, Yan; Cao, Huibo; DeBeer‐Schmitt, Lisa; Adams, P. W.; Jin, Rongying; DiTusa, J. F.

doi:10.1103/physrevb.100.184413

Cited by 38 publications

(29 citation statements)

References 34 publications

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“…Recently, Cr 1/3 TaS 2 has been shown to form a CSL phase, showing that Cr 1/3 NbS 2 is not unique among the intercalated TMDCs in this phenomenon [24]. Additionally, Mn 1/3 NbS 2 has been reported as being chiral helimagnetic [25] with an ordering temperature of T C = 45 K and a more recent study using neutron diffraction suggests that it was possible that Mn 1/3 NbS 2 was either a ferromagnet with a small domain size of 250 nm along the c axis or a helimagnet with a modulation size far larger than the one found in Cr 1/3 NbS 2 [26].…”

Section: Introductionmentioning

confidence: 93%

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/
Hall
¹
,
Loudon
²
,
Midgley
³

et al. 2022
Phys. Rev. Materials
13
1
8
0
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We compare the magnetism of single crystals of the intercalated transition metal dichalcogenides Cr 1/3 NbS 2 and Mn 1/3 NbS 2 using techniques such as dc and ac susceptibility and Lorentz transmission electron microscopy (LTEM). We present a detailed structural investigation of these materials using electron and single-crystal x-ray diffraction measurements to show how substitutional disorder and stacking faults can manifest in Cr 1/3 NbS 2 and Mn 1/3 NbS 2 , and give rise to additional superlattice reflections in diffraction patterns acquired from Mn 1/3 NbS 2 . Magnetic susceptibility and LTEM measurements show Cr 1/3 NbS 2 displays chiral helimagnetism below its magnetic ordering temperature (T C ) of 111 K, while there is no evidence that Mn 1/3 NbS 2 exhibits helimagnetic ordering below its transition temperature T C = 45 K.

show abstract

Section: Introductionmentioning

confidence: 93%

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/
Hall
¹
,
Loudon
²
,
Midgley
³

et al. 2022
Phys. Rev. Materials
13
1
8
0
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“…[ 34 ] Certain reports have claimed the observation of helical magnetic structures and solitons in Mn 1/3 NbS 2 with the magnetic helix having a long pitch period of ≈250 nm. [ 35,36 ] A smaller spatial period could lead to a smaller device size and higher storage density in future memory devices.…”

Section: Introductionmentioning

confidence: 99%

Chiral Helimagnetism and One‐Dimensional Magnetic Solitons in a Cr‐Intercalated Transition Metal Dichalcogenide

Zhang

Liu

et al. 2021

Advanced Materials

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Chiral magnets endowed with topological spin textures are expected to have promising applications in next‐generation magnetic memories. In contrast to the well‐studied 2D or 3D magnetic skyrmions, the authors report the discovery of 1D nontrivial magnetic solitons in a transition metal dichalcogenide 2H‐TaS2 via precise intercalation of Cr elements. In the synthetic Cr1/3TaS2 (CTS) single crystal, the coupling of the strong spin–orbit interaction from TaS2 and the chiral arrangement of the magnetic Cr ions evoke a robust Dzyaloshinskii–Moriya interaction. A magnetic helix having a short spatial period of ≈25 nm is observed in CTS via Lorentz transmission electron microscopy. In a magnetic field perpendicular to the helical axis, the helical spin structure transforms into a chiral soliton lattice (CSL) with the spin structure evolution being consistent with the chiral sine‐Gordon theory, which opens promising perspectives for the application of CSL to fast‐speed nonvolatile magnetic memories. This work introduces a new paradigm to soliton physics and provides an effective strategy for seeking novel 2D magnets.

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“…Thus, the role of the DMI in ScFeGe has not been resolved in our measurements or our calculations, thus far. This is important, since materials with hexagonal symmetry and significant DMI interaction have yielded helical magnets with magnetic solitonic states and unusual magnetic domain structures that evolve with field [6,8]. Coupled to this unanswered question is the question of topological protection in a polar noncentrosymmetric helimagnet.…”

Section: Discussionmentioning

confidence: 99%

“…The magnetism found in noncentrosymmetric (NCS) magnetic materials is compelling because of the topologically nontrivial nanoscopic magnetic structures discovered that offer potential for new magnetic information manipulation and storage technologies [1][2][3][4][5][6][7][8][9][10]. For example, MnSi, which discoveries of topologically interesting magnetic phases in bulk achiral materials outside of those caused by demagnetization fields.…”

Section: Introductionmentioning

confidence: 99%

“…For systems that are dominated by the DM interaction, such that one chirality or handedness of the helical state is highly preferred, the magnetic structure evolves to one where regions of magnetic moments aligned with H are separated by 2π chiral domain walls. This state is known as the magnetic soliton lattice [6,8]. Further increases in H eventually cause a breakdown of the topological protection afforded this state, so that it transforms to the topologically trivial field-polarized state.…”

Section: Introductionmentioning

confidence: 99%

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Helical magnetic order and Fermi surface nesting in noncentrosymmetric ScFeGe

Karna¹,

Tristant²,

Hebert³

et al. 2021

Phys. Rev. B

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An investigation of the structural, magnetic, thermodynamic, and charge transport properties of noncentrosymmetric hexagonal ScFeGe reveals it to be an anisotropic metal with a transition to a weak itinerant incommensurate helimagnetic state below T N = 36 K. Neutron diffraction measurements discovered a temperature and field independent helical wave vector k = (0 0 0.193) with magnetic moments of 0.53 μ B per Fe confined to the ab plane. Density functional theory calculations are consistent with these measurements and find several bands that cross the Fermi level along the c axis with a nearly degenerate set of flat bands just above the Fermi energy. The anisotropy found in the electrical transport is reflected in the calculated Fermi surface, which consists of several warped flat sheets along the c axis with two regions of significant nesting, one of which has a wave vector that closely matches that found in the neutron diffraction. The electronic structure calculations, along with a strong anomaly in the c-axis conductivity at T N , signal a Fermi surface driven magnetic transition, similar to that found in spin density wave materials. Magnetic fields applied in the ab plane result in a metamagnetic transition with a threshold field of ≈6.7 T along with a sharp, strongly temperature dependent discontinuity and a change in sign of the magnetoresistance for in-plane currents. Thus, ScFeGe is an ideal system to investigate the effect of in-plane magnetic fields on a helimagnet with a c-axis propagation vector, where the relative strength of the magnetic interactions and anisotropies determine the topology and magnetic structure.

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Consequences of magnetic ordering in chiral Mn1/3NbS2

Cited by 38 publications

References 34 publications

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/
Hall
¹
,
Loudon
²
,
Midgley
³

et al. 2022
Phys. Rev. Materials
13
1
8
0
View full text Add to dashboard Cite

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/
Hall
¹
,
Loudon
²
,
Midgley
³

et al. 2022
Phys. Rev. Materials
13
1
8
0
View full text Add to dashboard Cite

Chiral Helimagnetism and One‐Dimensional Magnetic Solitons in a Cr‐Intercalated Transition Metal Dichalcogenide

Helical magnetic order and Fermi surface nesting in noncentrosymmetric ScFeGe

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Consequences of magnetic ordering in chiral Mn1/3NbS2

Cited by 38 publications

References 34 publications

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/Hall1, Loudon2, Midgley3 et al. 2022Phys. Rev. Materials13180View full textAdd to dashboardCite

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/Hall1, Loudon2, Midgley3 et al. 2022Phys. Rev. Materials13180View full textAdd to dashboardCite

Chiral Helimagnetism and One‐Dimensional Magnetic Solitons in a Cr‐Intercalated Transition Metal Dichalcogenide

Helical magnetic order and Fermi surface nesting in noncentrosymmetric ScFeGe

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Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/
Hall
¹
,
Loudon
²
,
Midgley
³

et al. 2022
Phys. Rev. Materials
13
1
8
0
View full text Add to dashboard Cite

Comparative study of the structural and magnetic properties of Mn1/3NbS2 and Cr1/
Hall
¹
,
Loudon
²
,
Midgley
³

et al. 2022
Phys. Rev. Materials
13
1
8
0
View full text Add to dashboard Cite