Low-temperature vibration characteristics in InSe single crystals intercalated by Ni

Baran, A.; Botko, M.; Kajňaková, M.; Feher, A.; Feodosyev, S. B.; Syrkin, E. S.; Klochko, M. S.; Tovstyuk, N. K.; Grygorchak, I. I.; Fomenko, V. L.

doi:10.1063/1.4934548

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…-at temperatures below the Debye temperature, the temperature dependence of the specific heat capacity does not correspond to the expected law of T 2-3 for quasi-twodimensional systems, nor even to the Debye law T 3 , but the dependence ~ T  3 is revealed (the power index is greater than 3). For example, for x = 1 this dependence is proportional to T 3.2 [13]. In this case, even in the extended temperature range up to 12 K, it is well approximated by the function aТ 3 + bТ 5 .…”

Section: Resultsmentioning

confidence: 87%

“…In order to find out the nature of the modification of the electron energy spectrum for nickel intercalated InSe, the temperature dependence of the heat capacity was investigated in [13]. The absence of hysteresis was proved for a temperature range of 2-170 K. For a nonintercalated InSe sample at the lowest temperatures (below 5.5 K), the temperature dependence of the specific heat content is of the order T 2.4 .…”

Section: Resultsmentioning

confidence: 99%

“…In this case, even in the extended temperature range up to 12 K, it is well approximated by the function aТ 3 + bТ 5 . This enabled to determine Debye temperature of TD  275 K [13]. TD is almost invariable with the change in the concentration of the introduced nickel.…”

Section: Resultsmentioning

confidence: 99%

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The Effect of the Fractal Guest Subsystem on the Structure, Heat Capacity and Impedance Response of InSe Crystals Intercalated with Nickel

Seredyuk¹,

Grygorchak²,

Fomenko³

et al. 2018

J. Nano- Electron. Phys.

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The intercalation compounds of NixInSe (x  0; 0.25; 0.5; 0.75; 1.0; 1.25) were produced by the method of direct synthesis of components in quartz ampoules. These compounds are characterized by the formation of discrete nanoislands from the "guest" component as well as their reproduction with the formation of fractal nets. The inductive response at x  0.25, x  0.75, x  1.25, which for the indicated values of x has different intensity and frequency manifestation has been revealed for these structures. An impedance analysis of electrical current passage and its comparison with the data of temperature dependence of electrical conductivity has been carried out. It was found that the linear contribution to the heat capacity from the electrons at the lowest temperatures disappears as a result of intercalation with nickel, and at temperatures below Debye temperature the temperature dependence of the specific heat does not correspond to the expected law of T 2 ÷ 3 for the quasi-twodimensional systems. The revealed out of the ordinary effects can be explained by the change in the fractal structure of the clustered nickel guest subsystem.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of the Fractal Guest Subsystem on the Structure, Heat Capacity and Impedance Response of InSe Crystals Intercalated with Nickel

Seredyuk¹,

Grygorchak²,

Fomenko³

et al. 2018

J. Nano- Electron. Phys.

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Uncovering the phonon spectra and lattice dynamics of plastically deformable InSe van der Waals crystals

Wu,

Lin,

Shu

et al. 2024

Nat Commun

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Stacking two-dimensional (2D) van der Waals (vdW) materials in a layered bulk structure provides an appealing platform for the emergence of exotic physical properties. As a vdW crystal with exceptional plasticity, InSe offers the opportunity to explore various effects arising from the coupling of its peculiar mechanical behaviors and other physical properties. Here, we employ neutron scattering techniques to investigate the correlations of plastic interlayer slip, lattice anharmonicity, and thermal transport in InSe crystals. Not only are the interlayer slip direction and magnitude well captured by shifts in the Bragg reflections, but we also observe a deviation from the expected Debye behaviour in the heat capacity and lattice thermal conductivity. Combining the experimental data with first-principles calculations, we tentatively attribute the observed evidence of strong phonon-phonon interactions to a combination of a large acoustic-optical frequency resonance and a nesting effect. These findings correlate the macroscopic plastic slip and the microscopic lattice dynamics, providing insights into the mechano-thermo coupling and modulation in 2D vdW materials.

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Luminescence centers in low-dimensional layered cadmium iodide crystals and nanostructures

Rudka

Matviishyn

Seredyuk

et al. 2020

2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO)

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Low-temperature vibration characteristics in InSe single crystals intercalated by Ni

Cited by 4 publications

References 37 publications

The Effect of the Fractal Guest Subsystem on the Structure, Heat Capacity and Impedance Response of InSe Crystals Intercalated with Nickel

The Effect of the Fractal Guest Subsystem on the Structure, Heat Capacity and Impedance Response of InSe Crystals Intercalated with Nickel

Uncovering the phonon spectra and lattice dynamics of plastically deformable InSe van der Waals crystals

Luminescence centers in low-dimensional layered cadmium iodide crystals and nanostructures

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