Chiral solitons in monoaxial chiral magnets in tilted magnetic field

Yumoto, Masaki; Aoki, Ryuya; Togawa, Yoshihiko; Kato, Yasuyuki

doi:10.1103/physrevb.98.100402

Cited by 25 publications

(8 citation statements)

References 54 publications

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“…At a certain saturated field, the cone closes completely and the FFM state is reached (e. g., ≈4.5 T at 125 K, see Figure S1b in the Supporting Information). [38,[45][46][47][48][49] Correspondingly, as shown in Figure 3f, the ρ xy reaches a minimum at the saturated magnetic fields (e. g., ≈4.5 T at 125 K) which agrees well with the saturated magnetic field shown in Figure S1b in the Supporting Information for H // c. The low temperature behavior of ρ xy can be understood by taking into account the mean free path l. [39,45] At temperatures below 100 K, the longitudinal resistivity decreases fast and the mean free path l increases rapidly as temperature is lowered. As the AHE signal scales with 1/l 2 , it diminishes rapidly at temperatures below 100 K, resulting in the OHE dominating the Hall signal at 75 K and 2 K. The temperature dependence of ρ xy is consistent with previously reported results of Cr 1/3 NbS 2 .…”

Section: Electrical Transport Propertiesmentioning

confidence: 99%

The Magneto‐Transport Properties of Cr_1/3TaS₂ with Chiral Magnetic Solitons

Obeysekera

Gamage

Gao

et al. 2021

Adv Elect Materials

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Compared with the domain wall motion in a ferromagnetic nanowire, the chiral soliton motion could reach a much larger velocity at a much smaller current density. [9,11] The metallic chiral magnets that can host CSL are very rare. As far as we know, the formation of CSL in metallic chiral magnets has been only observed in Cr 1/3 NbS 2 and YbNi 3 Al 9 . [2,3,12,13] As the stability of chiral magnetic solitons is determined by the Dzyaloshinskii-Moriya (DM) interaction and the velocity of soliton motion is controlled by the non-adiabatic torque, searching for new chiral magnets associate with strong DM interaction and large non-adiabatic torque is of great importance in the emerging field of solitonics. [2,3,8,9] Among the various candidates, the magnetic ion (M = Cr, Mn, Fe, Co, and Ni) intercalated M 1/3 TaS 2 stands out because the parent compound TaS 2 has large spin-orbit coupling (SOC) and hosts a rich collection of exotic states including the Mott state, charge density wave, and quantum spin liquid. [14][15][16] As the magnetic ions insert into TaS 2 , the ordering of magnetic ions in M 1/3 TaS 2 results in a (1/3, 1/3, 0) superstructure with a chiral space group of P6 3 22. [17] The strong SOC and the chiral lattice structure of M 1/3 TaS 2 could induce strong DM interaction and large non-adiabatic torque, since the strength of DM interaction and non-adiabatic torque both are proportional to the SOC constant. [18,19] In the family of M 1/3 TaS 2 , only Fe 1/3 TaS 2 has been confirmed as a chiral magnet. [17,20] Nevertheless, the extremely large orbital magnetic moment of Fe 2+ ions yields the gigantic easy-axis magnetocrystalline anisotropy and brings on the Ising-type ferromagnetic structure in Fe 1/3 TaS 2 . [17,21] The crystal growth and characterization of several other M 1/3 TaS 2 have been studied as early as the 1980s, yet whether the crystals possess chiral lattice structure and chiral magnetism are in question. [22][23][24] For example, the Cr 1/3 TaS 2 has been reported to exhibit a trivial ferromagnetic (FM) transition near 115 K without any hints of chiral features. [22][23][24][25] In this work, we report the magneto-transport properties and magnetic phase diagrams of Cr 1/3 TaS 2 single crystals. In contrast with the reported trivial FM transition, our Cr 1/3 TaS 2 single crystals exhibit a chiral helimagnetic (CHM) transition near 140 K. The conducting electrons interact with the CHM and CSL orders, giving rise to the nontrivial magnetoresistance (MR) in Cr 1/3 TaS 2 . The normalized magnetic moment and Cr 1/3 TaS 2 -a candidate of chiral magnet-has been reported as a trivial ferromagnetic material. In contrast, the Cr 1/3 TaS 2 single crystals exhibit a chiral helimagnetic (CHM) transition near 140 K. The magnetic moment versus magnetic field curves reveal a CHM-chiral soliton lattice (CSL)-forced ferromagnetic (FFM) transition in the magnetic ordered state. The conducting electrons interact with the CHM and CSL orders, giving rise to the nontrivial magnetoresistance (MR) in the Cr 1/3 TaS 2 ...

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Section: Electrical Transport Propertiesmentioning

confidence: 99%

The Magneto‐Transport Properties of Cr_1/3TaS₂ with Chiral Magnetic Solitons

Obeysekera

Gamage

Gao

et al. 2021

Adv Elect Materials

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show abstract

“…Leonov and Kézsmárki 22 extended this study to Néel-type skyrmions with the uniaxial anisotropy. Masaki et al 23 generalized these results to chiral solitions in monoaxial chiral magnets and saw the interaction between solitions goes from repulsion to attraction depending on their separation and the strength of the in-plane component of the applied field. Osorio et al 24 studied skyrmion stability in ferromagnetic chiral magnets by studying the deformation of the skyrmion shape via harmonic expansion series of the skyrmion's boundary to see the effect of different fields.…”

Section: Introductionmentioning

confidence: 98%

Skyrmions in an oblique field: A path to novel binary and quaternary memory

Capic,

Garanin,

Chudnovsky

2020

Preprint

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We propose a novel binary and quaternary memory device based upon skyrmion states induced by the oblique field in a square magnetic island. To describe stable states and dynamics of the skyrmion, we employ the lattice model that uses the parameters of a real material and accounts for all relevant interactions. Depending on the orientation of the field, two or four spatially separated energy minima emerge in the oblique field. The energy barriers between the minima can be controlled by the strength and orientation of the magnetic field. We study the dynamics of the skyrmion and show that it can be moved between any two states by application of the field gradient. Islands of thickness of a few tens of atomic layers permit room-temperature manipulation of the proposed device.

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“…Domain walls and their magnonics, with and without DMI, are being extensively studied. [4][5][6][7][8][9][10][11][12] Comparatively, monoaxial helimagnets, in which the DMI acts only along one axis (the DMI axis), have received much less attention, although many experimental and theoretical results concerning their equilibrium [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] and dynamical [32][33][34][35][36][37][38][39][40][41][42][43][44] properties have been obtained.…”

mentioning

confidence: 99%

Magnonic Goos–Hänchen Effect Induced by 1D Solitons

Laliena

Campo

2021

Adv Elect Materials

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the chiral solitons of monoaxial helimagnets. These solitonic states appear easily in chiral magnets, characterized by the presence of an important Dzyaloshinskii-Moriya interaction (DMI). Domain walls and their magnonics, with and without DMI, are being extensively studied. [4][5][6][7][8][9][10][11][12] Comparatively, monoaxial helimagnets, in which the DMI acts only along one axis (the DMI axis), have received much less attention, although many experimental and theoretical results concerning their equilibrium [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] and dynamical [32][33][34][35][36][37][38][39][40][41][42][43][44] properties have been obtained.

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Chiral solitons in monoaxial chiral magnets in tilted magnetic field

Cited by 25 publications

References 54 publications

The Magneto‐Transport Properties of Cr_1/3TaS₂ with Chiral Magnetic Solitons

The Magneto‐Transport Properties of Cr_1/3TaS₂ with Chiral Magnetic Solitons

Skyrmions in an oblique field: A path to novel binary and quaternary memory

Magnonic Goos–Hänchen Effect Induced by 1D Solitons

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Chiral solitons in monoaxial chiral magnets in tilted magnetic field

Cited by 25 publications

References 54 publications

The Magneto‐Transport Properties of Cr1/3TaS2 with Chiral Magnetic Solitons

The Magneto‐Transport Properties of Cr1/3TaS2 with Chiral Magnetic Solitons

Skyrmions in an oblique field: A path to novel binary and quaternary memory

Magnonic Goos–Hänchen Effect Induced by 1D Solitons

Contact Info

Product

Resources

About

The Magneto‐Transport Properties of Cr_1/3TaS₂ with Chiral Magnetic Solitons

The Magneto‐Transport Properties of Cr_1/3TaS₂ with Chiral Magnetic Solitons