Questions tagged [solid-state-physics]

Question 1

Interested to calculate TDM of a molecule in the presence of a dielectric. What is the go-to way right now in research circles?

Question 2

In classical mechanics, the space of states is the cotangent bundle of configuration space. This space of states is also called phase space. In the physical case where phase space represents all ...

Question 3

I am trying to figure out following statement: For noble metals, the free-electron picture would predict that the Fermi sphere does not reach the boundary of the first Brillouin zone. In reality, ...

Question 4

The conditions for adiabatic evolution is that for every possible $n$, we must have $$ \sum_{n\neq m}\frac{\langle n(t) | \dot{H} | m(t) \rangle }{E_n(t)-E_m(t)} \to 0$$ which is achievable either by ...

Question 5

In XPS spectra of Silicon we only see $\rm Si$ $2s$ and $\rm Si$ $2p$ peaks. Why no $\rm Si$ $3s$ or $\rm Si$ $3p$ peaks? Silicon has electrons in both the $3s$ and $3p$ orbitals that could be emitted ...

Question 6

Most metals are paramagnetic because metals have a lot of unpaired electrons. While carbon is a nonmetal, because graphite has a lot of unsaturated bonds, those pi electrons can move freely just like ...

Question 7

I'm trying to follow the math in an old paper discussing the electrical characteristics of niobium. The paper skips over a fairly simple substitution/unit conversion: Here, $\rho_i$ is the intrinsic ...

Question 8

I just finished up a uni course on magnetism, which mostly made sense, but I've been left with some questions about ferromagnetic behaviour; in particular, I'm not satisfied with my lecturer's ...

Question 9

I'm trying to understand the connection between field-theoretic Lagrangians and the standard Hamiltonians used in solid-state physics. In particular, consider a full crystal Hamiltonian of the form: $ ...

Question 10

To my understanding, a $k$-point (or wavevector) is a point in reciprocal space that can be used as the “spawning” point of plane waves. These plane waves are then used as a basis set to describe a ...

Question 11

Why does the dipole moment have to be perpendicular to the mirror plane in systems with $C_{1h}$ point group symmetry? I am trying to understand the dipole emission of point defects in solid-state ...

Question 12

I have a question about how the Berry connection and the velocity operator are computed in continuum models versus in tight-binding models. Let me start with my understanding of the definitions in ...

Question 13

I am currently doing self-consistent calculations for various parameters $\Delta_{i}$, but i run into the problem that I have a U(1)-symmetry break, so when I reach the minima my simulations start ...

Question 14

The de Haas van Alphen effect can be summarized as finding peaks in the density of states evaluated at the Fermi energy of a metal at regularly spaced intervals as a function of $1/B$. What's a simple ...

Question 15

I am reading Wahabs book for solid state physics, he considers the potential shown in image attached. I understand first two boundary conditions from QM. But where are the other two coming from?

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Questions tagged [solid-state-physics]

How to calculate transition dipole moment computationally? [closed]

Deriving the Boltzmann equation [closed]

Free Electron theory and fermi surface

Is it truly possible to adiabatically achieve the flat band limit?

Why are there no $\rm Si$ $3p$ peaks in XPS spectra of Silicon?

Why is graphite a good diamagnet?

Non-spin factor of 2 when working with density of states

What is the mechanism behind the Curie point in ferromagnets?

Deriving the full crystal Hamiltonian from a Lagrangian density

What is a $k$-point physically — beyond its use in computational methods? [closed]

Dipole moment operator and $C_{1h}$ point group symmetry

Berry connection and velocity operator for tight binding models

Stopping criteria for Self-consistent calculations

Simple explanation of the de Haas van Alphen effect

Why can I have these 2 boundary condition in Kronig-Penney Model?

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