Solid State Physics

Theory and applications of solid-state physics. | Review and cite the most recent SOLID STATE PHYSICS protocol, troubleshooting and other methodology information | Contact experts in SOLID STATE PHYSICS to get answers

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Questions related to Solid State Physics

How is the multipole-multipole(dipole-dipole, dipole-quadrupole, q-q) interaction responsible for the concentration quenching phenomenon?

Multipole-Multipole interaction, exchange interaction and radiation re-absorptions are considered as main cause for reduction in PL intensity on increasing the doping concentrations in the host...

21 April 2017 9,619 3 View

Does a metal at 0 K have 0 conductivity because all electrons are below the Fermi Energy?

It is well known that in general conductivity of metals increases with decreasing temperature. Although there are less electrons that are thermally excited above the Fermi energy to contribute to...

19 April 2017 8,226 11 View

How to calculate the bulk concentration (C) of Na (mol cm-3)?

Hi, My material is Na2Ti6O13, The Z value is 2, volume of unit cell (10^6 pm^3) is 512.18. How can I get the bulk concentration? Thanks Ranjusha

18 April 2017 198 5 View

I want to study the carrier temperature and the excition density relationship from PL. should i just simulate the PL curve??

N is proportional to the exp(-E/(KT)), i fit the PL curve and found that the tail of PL is matched well with a Gaussian curve instead of exp(-E/(KT)). so i cannot find the temperature and the...

12 April 2017 8,205 3 View

In a band structure plot what are meannings of the symmetry points? And at what symmetry point one should calculate the band gap?

In the band structure diagram what the symmetry points are really mean for? How should I calculate the band gap and at what symmetry point?

12 April 2017 3,829 6 View

How can I calculate absolute electronegativity of CuAl2O4?

I want to calculate the CBM and VBM from the band gap of CuAl2O4. But is unable find out the absolute electronegativity of CuAl2O4. Please help me with proper references How can I calculate...

10 April 2017 567 31 View

Bandgap question: Is Rc1=RC4 or not?

Seen from the attached pictuire. Based on bandgap requirement, Ic1=Ic2. Because Ic2 and Ic3 are in series--> Ic2=Ic3 Because of size ratio n, Ic4=n*Ic3 So Ic4=n*Ic1 But Ic4 and Ic1 are in...

09 April 2017 8,355 1 View

Why different lattice temperature in Sentaurus 3D simulation of electro-thermal effects of heavy ion on SiC Schottky when using different time range?

While simulating the effect of a heavy ion strike on a reverse biased SiC Schottky diode in Sentaurus 3D, I see totally different maximum lattice temperatures when simulating different time ranges...

08 April 2017 7,794 0 View

Why is the PL peak blue shifted?

The PL peak for bulk 3C-SiC is 2.3eV approximately. But the peak for Polycrystalline SiC(bulk) sample is observed to be near 2.8eV. So a shift is observed. I am interested to know the reason...

07 April 2017 2,103 3 View

What is Density of States of a semiconductor matrial?

Dear all, i hope this can be explained in terms of it's role in semiconductor devices, more specifically in FETs.

06 April 2017 8,592 2 View

Seeking possible perspective of tunneling based transport in atomically long single n-type silicon or other material ?

I asked this question before and explained it in the body of the question analysis. In this question I would like to share one perspective where tunneling based transport might oversee drift based...

30 March 2017 7,180 10 View

Is Fick's second law solvable with a concentration-dependent diffusion coefficient?

I've been trying to predict the theoretical annealing condition of a pure Ge thin film sputtered on Si substrate, the idea behind this process is to create a smooth composition gradient through...

29 March 2017 2,590 1 View

I am getting negative values for in phase and out of phase 3 Omega voltages while using SR 830 lock in amplifier. Any suggestions is appreciated?

I am trying to measure thermal conductivity of thin films using 3 Omega method. Although the in phase voltage follows decreasing trend with increase in frequency the values are always negative....

28 March 2017 7,310 2 View

Why does the amorphous Si behave like a direct semiconductor?

Could some one tell me why the optical absorption in the amorphous Si is so sharp than the crystalline Si ? Please add some relevant papers if possible!

22 March 2017 9,478 2 View

Is it possible that the carrier concentration increases however hole mobility decreases for Hall effect measurement?

Currently, I am measuring mg doped InN with Hall effect by van der Pauw method. However, I encounter this problem. Is this normal phenomenon?

22 March 2017 7,355 2 View

Please give me free computational or simulation software packages for 3 D visulazation of all crystal structures and theorotical calculation?

I want free Computational or simulation software package. Using which I can draw 3D images of all inorganic and organic crystal structure and their electronic properties. Particularly ready made...

21 March 2017 7,731 5 View

Effect of lattice vibrations on holes movement?

Hello I am working on a material in which mobility of holes needs to consider along with electrons when only lattice vibrations are there. But I am not sure that whether a particular type of...

20 March 2017 2,861 1 View

Hello everyone, What we can call those GW+BSE (e-h interaction) peaks, which appear after the optical band gap?

Fig. attached show the imaginary part of bulk system with GW and GW+BSE calculation. Present optical gap (GW) is 1.38 eV. Can we call these peaks (P1, P2, P3 appear at 1.45, 1.65 and 1.98 eV,...

18 March 2017 1,244 2 View

How to know whether a material has an indirect of direct band gap?

Dear All, I have calculated the reflectance of a material and then converted the reflectance into its absorbance by using the Kubelka Munk function using the equation F(R)=[(1-R)*2]/2R If n =1/2...

17 March 2017 4,777 4 View

Could anyone explain me how to plot the magnetic susceptibility in the form of XmT=f(T) in coordination compounds?

I have magnetic data for coordination compounds and I need to plot the magnetic susceptibility in the form of XmT=f(T).Could anyone explain me how can I plot these data in that form?

16 March 2017 4,787 2 View

How to calculate Curie temperature using SPRKKR code?

I want to calculate the Curie temperature of Heusler compounds using KKR code. Can you provide me case.inp file that contain a switch for calculating Curie temperature?

14 March 2017 591 3 View

Any general solutions to Sentaurus simulation not converge?

The simulation I ran often doesn't converge, always the RHS "right hand side" over 1e10. It can be I changed the length of the terminal, the carrier recombination velocity, the light intensity or...

08 March 2017 9,686 6 View

How to convert a conventional cell to a primitive cell.....?

I am working on 28 atom system. I need a primitive cell with 7 atoms. How should I get a primitive cell or primitive lattice vectors for this structure? I have the .cif file. Is there any way to...

05 March 2017 6,295 7 View

The delta values?

I am trying to calculate the Schottky contributions to the heat capacity in rare earth alloys in Cu and Y matrix. I need the values of the separation gap between the doublets. I found the value of...

27 February 2017 6,182 2 View

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