Regularization Algorithm for DOS Spectrum Deconvolution From C(V) and Q(V) Dependencies of Si Nanowire-Based MOS Structure

Ligatchev, V.; Chin, Sai Kong

doi:10.1149/1.3237005

Cited by 6 publications

(12 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental work done previously does however suggest that treating the dielectric constant (ω) of the diamond test mass as real and independent of both frequency and temperature in the limit when T ∼ O(1) K is a reasonably good assumption; see Refs. [51][52][53]. Furthermore, the temperature correction to the Casimir force can also be neglected at such low temperature regions, see the analysis in Ref.…”

Section: B Casimir Screeningmentioning

confidence: 99%

Quantum gravity witness via entanglement of masses: Casimir screening

et al. 2020

View full text Add to dashboard Cite

A recently proposed experimental protocol for quantum gravity induced entanglement of masses (QGEM) requires in principle realizable, but still very ambitious, set of parameters in matter-wave interferometry. Motivated by easing the experimental realization, in this paper, we consider the parameter space allowed by a slightly modified experimental design, which mitigates the Casimir potential between two spherical neutral test masses by separating the two macroscopic interferometers by a thin conducting plate. Although this setup will reintroduce a Casimir potential between the conducting plate and the masses, there are several advantages of this design. First, the quantum gravity induced entanglement between the two superposed masses will have no Casimir background. Secondly, the matter-wave interferometry itself will be greatly facilitated by allowing both the mass 10 −16-10 −15 kg and the superposition size x ∼ 20 μm to be a one-two order of magnitude smaller than those proposed earlier, and thereby also two orders of magnitude smaller magnetic field gradient of 10 4 Tm −1 to create that superposition through the Stern-Gerlach effect. In this context, we will further investigate the collisional decoherences and decoherence due to vibrational modes of the conducting plate.

show abstract

Section: B Casimir Screeningmentioning

confidence: 99%

Quantum gravity witness via entanglement of masses: Casimir screening

et al. 2020

View full text Add to dashboard Cite

show abstract

“…[2] with β = 1, f is the modified (due to electron collisions) statistical function, τ is the relaxation time, ∇ k and ∇ r are gradient operators in the momentum and spatial sub-spaces of the whole phase space. As for the 'supplementary' g function (which appears to reflect the collisions contribution), we can use a 'linearized' approximation, proposed in Ref.…”

Section: Boltzmann Transport Equation For C(v) Dependencies Of Sinw-bmentioning

confidence: 99%

“…4(a), (b) compare the standard FD distribution function (represented by Eq. [2] at V = 0) with the modified one (computed in accordance to Eqs. [4, 4a, 4b] for a = 5 nm) at two different temperatures: 300 K and 38 K. As one can see from figures 4(a) and (b), the modified distribution function deviates quite moderately from FD one at T = 300 K, but such deviation becomes severe at T = 38 K. This means that not only NW radius a, but also temperature exhibit strong effect on distribution function and eventual relationship between N(E) and C(V) functions in SiNW-based MOS structure.…”

Section: Boltzmann Transport Equation For C(v) Dependencies Of Sinw-bmentioning

confidence: 99%

Effects of Quantum Confinement on Interdependence between DOS Spectrum and C(V) Characteristic of Si Nanowire-Based MOS Structure

Ligatchev

Chin

2010

ECS Trans.

Self Cite

View full text Add to dashboard Cite

Interrelation between capacitance -gate voltage [C(V)] characteristic and density-of-states (DOS) spectrum [N(E)] is analyzed using experimental C(V) data obtained from siliconnanowire (SiNW) based metal-oxide-semiconductor (MOS) structure, solution of coupled Schrödinger-Poisson (SP) equations (with full treatment on quantum confinement) and semi-classical Fredholm integral equation (FIE) of the first kind. It is shown that FIE valid for NW-based MOS structures with NW radii a ≥ 10 nm at temperature T ≥ 38 K. However, significant deviations from FIE is predicted by SP treatment for a = 5 nm and T = 5 K. Such deviation is attributed to considerable effect of quantum confinement not only on N(E) distributions, but also on fundamental statistical distribution functions of electrons.

show abstract

“…Distinctive feature of Eqs. [1,2] consist in the fact that both of them treat E and eV quantities in the equivalent fashion, presuming the unity 'scaling factor' between them (i.e. β = 1).…”

Section: Effects Of Temperature and Nw Transverse Size On C(v) And N(...mentioning

confidence: 99%

Effects of Quantum Confinement on Interdependence between DOS Spectrum and C(V) Characteristic of Si Nanowire-Based MOS Structure

Ligatchev¹,

Chin²

2010

ECS Trans.

View full text Add to dashboard Cite

Interrelation between capacitance - gate voltage [C(V)] characteristic and density-of-states (DOS) spectrum [N(E)] is analyzed using experimental C(V) data obtained from silicon-nanowire (SiNW) based metal-oxide-semiconductor (MOS) structure, solution of coupled Schrödinger-Poisson (SP) equations (with full treatment on quantum confinement) and semi-classical Fredholm integral equation (FIE) of the first kind. It is shown that FIE valid for NW-based MOS structures with NW radii a equal to or beger than 10 nm at temperature T exceeding 38 K. However, significant deviations from FIE is predicted by SP treatment for a = 5 nm and T = 5 K. Such deviation is attributed to considerable effect of quantum confinement not only on N(E) distributions, but also on fundamental statistical distribution functions of electrons.

show abstract

Regularization Algorithm for DOS Spectrum Deconvolution From C(V) and Q(V) Dependencies of Si Nanowire-Based MOS Structure

Cited by 6 publications

References 16 publications

Quantum gravity witness via entanglement of masses: Casimir screening

Quantum gravity witness via entanglement of masses: Casimir screening

Effects of Quantum Confinement on Interdependence between DOS Spectrum and C(V) Characteristic of Si Nanowire-Based MOS Structure

Effects of Quantum Confinement on Interdependence between DOS Spectrum and C(V) Characteristic of Si Nanowire-Based MOS Structure

Contact Info

Product

Resources

About