Enhanced magnetization in proton irradiated Mn3Si2Te6 van der Waals crystals

Martinez, L. M.; Iturriaga, Hector; Olmos, Rubyann; Shao, Lin; Liu, Yu; Mai, Thuc; Petrović, C.; Walker, Angela R. Hight; Singamaneni, Srinivasa Rao

doi:10.1063/5.0002168

Cited by 16 publications

(11 citation statements)

References 78 publications

(79 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The synthesis of mm-sized CST crystals was conducted as previously reported with the self-flux method starting with Cr powder and Si and Te pieces [18]. The crystals were then irradiated with a 2 MeV proton beam in 1.7 MV Tandetron Accelerator following closely the procedure discussed in [6][7][8][9]. The energy of the beam is kept low enough to avoid damage to the crystal.…”

Section: Methodsmentioning

confidence: 99%

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr₂Si₂Te₆ magnet

Iturriaga,

Chen,

Yang

et al. 2024

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The discovery of long-range magnetic ordering in atomically thin materials catapulted the van der Waals (vdW) family of compounds into an unprecedented popularity, leading to potentially important technological applications in magnetic storage and magneto-transport devices, as well as photoelectric sensors. With the potential for the use of vdW materials in space exploration technologies it is critical to understand how the properties of such materials are affected by ionizing proton irradiation. Owing to their robust intra-layer stability and sensitivity to external perturbations, these materials also provide excellent opportunities for studying proton irradiation as a non-destructive tool for controlling their magnetic properties. Specifically, the exfoliable Cr2Si2Te6 (CST) is a ferromagnetic semiconductor with the Curie temperature (TC) of ~32 K. Here, we have investigated the magnetic properties of CST upon proton irradiation as a function of fluence (1 x 1015, 5 x 1015, 1 x 1016, 5 x 1016, and 1 x 1018 H+/cm2) by employing variable-temperature, variable-field magnetization measurements, and detail how the magnetization, magnetic anisotropy vary as a function of proton fluence across the magnetic phase transition. While the TC remains constant as a function of proton fluence, we observed that the saturation magnetization and magnetic anisotropy diverge at the proton fluence of 5 x 1016 H+/cm2, which is prominent in the ferromagnetic phase, in particular. This work demonstrates that proton irradiation is a feasible method for modifying the magnetic properties and local magnetic interactions of vdWs crystals, which represents a significant step forward in the design of future spintronic and magneto-electronic applications.

show abstract

Section: Methodsmentioning

confidence: 99%

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr₂Si₂Te₆ magnet

Iturriaga,

Chen,

Yang

et al. 2024

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…It was also reported that there is an exotic quantum state driven by ab plane chiral orbital currents in Mn 3 Si 2 Te 6 [12]. These intriguing features have inspired a lot of research works to unearth the electronic and magnetic properties of Mn 3 Si 2 Te 6 [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Intrinsically low lattice thermal conductivity in layered Mn₃Si₂Te₆

Li,

Cheng,

Zhao

et al. 2023

New J. Phys.

View full text Add to dashboard Cite

The ferrimagnetic nodal-line semiconductor Mn3Si2Te6 has recently received much attention due to its colossal angular magnetoresistance (Seo et al 2021 Nature 599 581). The magnetic and electronic properties of Mn3Si2Te6 have been extensively studied. Meanwhile, a recent experiment showed that Mn3Si2Te6 has a low in-plane lattice thermal conductivity, which implies its potential applications in thermoelectricity. Here, we have investigated phonon dispersion and lattice thermal conductivity of Mn3Si2Te6 by the first-principles calculations and the Peierls–Boltzmann transport equation. It is found that the lattice thermal conductivities of Mn3Si2Te6 are quite low, which are 1.33 and 0.96 Wm−1K−1 along the a and c axes at 300 K, respectively. A significant contribution (>90%) to the thermal conductivity comes from the acoustic phonons and low-frequency optical phonons linked to the vibration of Te atoms. Meanwhile, it is found that such low thermal conductivities of Mn3Si2Te6 are a consequence of the low group velocities and relatively short phonon lifetimes, which are intrinsically derived from the quite complex crystal structure, heavy Te atoms, and relatively weak chemical bonding. Our work not only explains the origin of the intrinsically low thermal conductivity of Mn3Si2Te6 but also could be helpful to the study on the thermal conductivity of other similar layered magnetic materials.

show abstract

“…In the recent past, external stimuli have been employed to tune the magnetic states in quasi-2D materials via photoexcitation, proton irradiation, strain, gating, doping, pressure, and intercalation. − Among all, hydrostatic pressure has been used as a disorderless procedure to tune the physical properties of vdW compounds. Pressure on a system of weakly coupled layers affects the bonding and interlayer coupling without destroying the crystal .…”

Section: Introductionmentioning

confidence: 99%

Pressure-Dependent Magnetic Properties of Quasi-2D Cr₂Si₂Te₆ and Mn₃Si₂Te₆

et al. 2023

Self Cite

View full text Add to dashboard Cite

Recently, pressure has been used to induce structural and magnetic phase transitions in many layered quantum materials whose layers are linked by van der Waals forces. Materials with such weakly held layers allow for relatively easy manipulation of the superexchange mechanism, which can give rise to novel magnetic behavior. Using hydrostatic pressure as a disorderless means to manipulate the interlayer coupling, we applied pressure on two quasi-2D sister compounds, namely, Cr 2 Si 2 Te 6 (CST) and Mn 3 Si 2 Te 6 (MST), up to ∼1 GPa. Magnetic property measurements with the application of pressure revealed that the ferromagnetic transition temperature decreases in CST, while the opposite occurs for the ferrimagnetic MST. In MST, magnetization decreases with the increase in pressure, and such a trend is not clearly observed within the pressure range studied for CST. The overall pressure effect on magnetic characteristics such as exchange couplings and magnetic anisotropy energies is also examined theoretically using density functional theory. Exchange coupling in MST is strongly frustrated, and the first nearest neighbor interaction is the most dominant of the components with the strongest pressure dependence. In CST, the exchange coupling parameters exhibit very little dependence on pressure. This combined experimental and theoretical work has the potential to expand to other relevant quantum materials.

show abstract

Enhanced magnetization in proton irradiated Mn3Si2Te6 van der Waals crystals

Cited by 16 publications

References 78 publications

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr₂Si₂Te₆ magnet

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr₂Si₂Te₆ magnet

Intrinsically low lattice thermal conductivity in layered Mn₃Si₂Te₆

Pressure-Dependent Magnetic Properties of Quasi-2D Cr₂Si₂Te₆ and Mn₃Si₂Te₆

Contact Info

Product

Resources

About

Enhanced magnetization in proton irradiated Mn3Si2Te6 van der Waals crystals

Cited by 16 publications

References 78 publications

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr2Si2Te6 magnet

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr2Si2Te6 magnet

Intrinsically low lattice thermal conductivity in layered Mn3Si2Te6

Pressure-Dependent Magnetic Properties of Quasi-2D Cr2Si2Te6 and Mn3Si2Te6

Contact Info

Product

Resources

About

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr₂Si₂Te₆ magnet

Proton-fluence dependent magnetic properties of exfoliable quasi-2D van der Waals Cr₂Si₂Te₆ magnet

Intrinsically low lattice thermal conductivity in layered Mn₃Si₂Te₆

Pressure-Dependent Magnetic Properties of Quasi-2D Cr₂Si₂Te₆ and Mn₃Si₂Te₆