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Atomic and Condensed Matter Forum

Join in expert discussion on atomic and condensed matter. Methods for atoms, molecules, condensed matter. This includes the structure of the atom, its energy states, and its interactions.

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Mimetite: P63/m Space Group Explained

May 26, 2014 · Replies 3 · May 26, 2014

Replies: 3

Views: 3K

Superconductivity and magnetism

May 25, 2014 · Replies 4 · May 26, 2014

Replies: 4

Views: 2K

What Determines the Fermi Energy in Solids?

Oct 25, 2013 · Replies 3 · May 23, 2014

Replies: 3

Views: 3K

Molecular Orbital Theory Question about bonding/antibonding orbitals

May 20, 2014 · Replies 6 · May 21, 2014

Replies: 6

Views: 3K

Two Fourier transforms and the calculation of Effective Hamiltonian.

May 16, 2014 · Replies 7 · May 20, 2014

Replies: 7

Views: 3K

Quastion about K-points and energy cutoff

May 2, 2014 · Replies 3 · May 20, 2014

Replies: 3

Views: 8K

Interpretation to ARPES measured Fermi surface

May 18, 2014 · Replies 3 · May 18, 2014

Replies: 3

Views: 3K

Why is Orthogonal Plane Wave (OPW) Complete?

May 14, 2014 · Replies 1 · May 18, 2014

Replies: 1

Views: 2K

Near field of a diffraction grating?

May 14, 2014 · Replies 1 · May 16, 2014

Replies: 1

Views: 3K

Steady state of diffusion current in semiconductors

Apr 26, 2014 · Replies 2 · May 16, 2014

Replies: 2

Views: 4K

How to build different structures using programming

May 7, 2014 · Replies 4 · May 15, 2014

Replies: 4

Views: 2K

The Kubo Formula of Hall Conductivity

May 8, 2014 · Replies 3 · May 14, 2014

Replies: 3

Views: 5K

Symmetry operation in reciprocal space

Mar 12, 2014 · Replies 9 · May 14, 2014

Replies: 9

Views: 5K

Some basic problems with energy band

May 13, 2014 · Replies 1 · May 13, 2014

Replies: 1

Views: 2K

Understanding Critical Exponents and Their Application in Systems

May 9, 2014 · Replies 1 · May 13, 2014

Replies: 1

Views: 3K

What is the internal and external quantum numbers of a atom

May 12, 2014 · Replies 1 · May 13, 2014

Replies: 1

Views: 3K

Understanding Brillouin Zones - What do they represent physically?

May 10, 2014 · Replies 2 · May 10, 2014

Replies: 2

Views: 3K

React Ion of Gases: Low Energy Anion/Cation & Grounded Metal Surface

Apr 10, 2014 · Replies 1 · May 9, 2014

Replies: 1

Views: 2K

Is the analytic properties of Fermionic self energy well known?

Apr 16, 2014 · Replies 3 · May 9, 2014

Replies: 3

Views: 3K

Rb saturated spectrum and identification of absorption lines

May 7, 2014 · Replies 4 · May 8, 2014

Replies: 4

Views: 2K

Can one electron decay into an electron plus a phonon?

May 7, 2014 · Replies 12 · May 8, 2014

Replies: 12

Views: 4K

Understanding Fermi Level in Silicon: Valence and Conduction Bands Explained

May 7, 2014 · Replies 5 · May 8, 2014

Replies: 5

Views: 8K

What is the Fermi energy of (undoped) graphene?

May 2, 2014 · Replies 2 · May 8, 2014

Replies: 2

Views: 10K

What is the difference in mechanisms in which IB1 and IB2 are formed?

Sep 12, 2013 · Replies 3 · May 7, 2014

Replies: 3

Views: 3K

Derivation of 1st london equation.

Apr 26, 2014 · Replies 2 · May 7, 2014

Replies: 2

Views: 7K

Hole current and Recombination

May 6, 2014 · Replies 2 · May 7, 2014

Replies: 2

Views: 2K

Triboelectric Effect: Atoms Affinity & Electron Attraction

Apr 26, 2014 · Replies 2 · May 7, 2014

Replies: 2

Views: 2K

Lattice systems and group symmetries

Apr 27, 2014 · Replies 2 · May 7, 2014

Replies: 2

Views: 2K

Weak Form of the Effective Mass Schrodinger Equation

Apr 29, 2014 · Replies 1 · May 6, 2014

Replies: 1

Views: 3K

How can free of self-interaction error easily be concluded in DFT?

May 6, 2014 · Replies 5 · May 6, 2014

Replies: 5

Views: 3K

How Does a Magnetic Field Affect Thermal Transport in Graphene?

Apr 11, 2014 · Replies 2 · May 5, 2014

Replies: 2

Views: 3K

Understanding Inversion Symmetry and Space Symmetry Breaking

Apr 25, 2014 · Replies 4 · May 5, 2014

Replies: 4

Views: 19K

Question about crystallography

May 3, 2014 · Replies 2 · May 5, 2014

Replies: 2

Views: 3K

Born-Bethe approximation for cross section

Apr 22, 2014 · Replies 1 · May 4, 2014

Replies: 1

Views: 3K

Absorption spectra of T = 0K semiconductor?

Apr 30, 2014 · Replies 3 · May 4, 2014

Replies: 3

Views: 3K

Phase Diagram of BiMnO3: High Pressure Necessary?

May 1, 2014 · Replies 4 · May 2, 2014

Replies: 4

Views: 2K

Laser Diode Principles: Stimulated Emission & Voltage

May 1, 2014 · Replies 2 · May 1, 2014

Replies: 2

Views: 2K

Question about Bragg diffraction

Apr 29, 2014 · Replies 6 · May 1, 2014

Replies: 6

Views: 6K

How Does the Fermi Surface Form a Perfect Square in a 2D Tight Binding Model?

Mar 30, 2014 · Replies 3 · Apr 29, 2014

Replies: 3

Views: 6K

How Does Entropy Influence Electron-Hole Recombination Mechanisms?

Apr 29, 2014 · Replies 3 · Apr 29, 2014

Replies: 3

Views: 2K

Isothermal Magnetic Susceptibility

Apr 28, 2014 · Replies 2 · Apr 29, 2014

Replies: 2

Views: 4K

What does an 2H- in front of a chemical symbol mean? (i.e. 2H-MoX_2)

Apr 25, 2014 · Replies 2 · Apr 27, 2014

Replies: 2

Views: 4K

Microscopic properties of electrical resistance

Apr 26, 2014 · Replies 2 · Apr 27, 2014

Replies: 2

Views: 3K

DOS Formulas: Derivation & Comparison

Apr 21, 2014 · Replies 9 · Apr 25, 2014

Replies: 9

Views: 3K

Magnetic properties for In2O3, indium (iii) oxide

Apr 24, 2014 · Replies 1 · Apr 24, 2014

Replies: 1

Views: 2K

D-wave superconductivity: Functional forms?

Mar 31, 2014 · Replies 10 · Apr 24, 2014

Replies: 10

Views: 4K

Cutting, at the atomic/molecular level

Apr 21, 2014 · Replies 10 · Apr 22, 2014

Replies: 10

Views: 3K

How do compound objects maintain rigidity despite atomic vibrations?

Apr 21, 2014 · Replies 2 · Apr 22, 2014

Replies: 2

Views: 2K

P-N Junction Depth: Affect on Semiconductor Device Performance

Apr 17, 2014 · Replies 1 · Apr 20, 2014

Replies: 1

Views: 3K

Is an atom a dipole due to its positive and negative charges?

Apr 20, 2014 · Replies 2 · Apr 20, 2014

Replies: 2

Views: 2K

Is there a conservation law associated with C4 symmetry?

Apr 17, 2014 · Replies 2 · Apr 20, 2014

Replies: 2

Views: 4K

Calculate the mass defect of a molecule without empirical mass

Apr 19, 2014 · Replies 1 · Apr 19, 2014

Replies: 1

Views: 3K

Question regarding orbital hybridization in DFT

Apr 14, 2014 · Replies 2 · Apr 15, 2014

Replies: 2

Views: 3K

Questions regarding the Fermi level of a metal

Apr 13, 2014 · Replies 4 · Apr 15, 2014

Replies: 4

Views: 3K

Understanding Spin-Orbit Coupling in Hamiltonian

Apr 10, 2014 · Replies 4 · Apr 14, 2014

Replies: 4

Views: 3K

Why does the anomalous Zeeman effect not show up on some atoms?

Apr 12, 2014 · Replies 1 · Apr 14, 2014

Replies: 1

Views: 3K

Bragg and Brillouin diffraction

Apr 13, 2014 · Replies 9 · Apr 14, 2014

Replies: 9

Views: 3K

The Equipartion principle for diatomic molecules

Apr 12, 2014 · Replies 1 · Apr 13, 2014

Replies: 1

Views: 1K

PN Junction. Silicon vs Germanium

Apr 12, 2014 · Replies 2 · Apr 13, 2014

Replies: 2

Views: 2K

Doubts about the electron magnetic moment.

Apr 12, 2014 · Replies 3 · Apr 13, 2014

Replies: 3

Views: 2K

What can be seen if taking a snap shot @ 4.21K? Superconductivity

Apr 12, 2014 · Replies 4 · Apr 12, 2014

Replies: 4

Views: 2K

Can graphene work in outer space?

Mar 23, 2014 · Replies 3 · Apr 10, 2014

Replies: 3

Views: 2K

Why aren't most insulators transparent just like glass?

Apr 8, 2014 · Replies 3 · Apr 9, 2014

Replies: 3

Views: 6K

Trying to understand emission and absorption

Apr 8, 2014 · Replies 1 · Apr 8, 2014

Replies: 1

Views: 3K

Atomic Energy States in a Crystal: Einstein's Relation

Apr 7, 2014 · Replies 1 · Apr 7, 2014

Replies: 1

Views: 2K

Suggestions for FTIR Experiment

Feb 24, 2014 · Replies 6 · Apr 7, 2014

Replies: 6

Views: 3K

What is the significance of Fractional Occupation Numbers in DFT?

Mar 30, 2014 · Replies 5 · Apr 7, 2014

Replies: 5

Views: 3K

Number of modes for a 2d crystal

Apr 4, 2014 · Replies 1 · Apr 5, 2014

Replies: 1

Views: 3K

Converting Between K-Space Sum and Integral for Macroscopic Solids"

Mar 31, 2014 · Replies 2 · Apr 3, 2014

Replies: 2

Views: 13K

How can the electrical conductivity of graphene be measured?

Mar 30, 2014 · Replies 3 · Mar 30, 2014

Replies: 3

Views: 5K

Microscopic description of glass-light interaction

Mar 25, 2014 · Replies 1 · Mar 26, 2014

Replies: 1

Views: 2K

Improving vacuum system efficiency?

Nov 29, 2013 · Replies 11 · Mar 25, 2014

Replies: 11

Views: 6K

How many defects in graphene would kill its conductivity?

Mar 25, 2014 · Replies 3 · Mar 25, 2014

Replies: 3

Views: 3K

Can DFT Bridge the Gap Between Theory and Real-World Material Science?

Feb 27, 2014 · Replies 5 · Mar 23, 2014

Replies: 5

Views: 4K

Ising model, same interaction with all spins

Feb 14, 2014 · Replies 8 · Mar 23, 2014

Replies: 8

Views: 4K

Defining Reference Entropy and Chemical Potential in Different Phases

Mar 23, 2014 · Replies 6 · Mar 23, 2014

Replies: 6

Views: 2K

Ionization, neutralization, electrical breakdown etc.

Mar 23, 2014 · Replies 1 · Mar 23, 2014

Replies: 1

Views: 2K

Form Factor and Neutron Scattering

Mar 20, 2014 · Replies 1 · Mar 22, 2014

Replies: 1

Views: 3K

[FDTD/FORTRAN] problem with tfsf boundary and berenger's pml

Mar 17, 2014 · Replies 8 · Mar 18, 2014

Replies: 8

Views: 4K

Tight Binding Hamiltonian and Potential (U)

Feb 16, 2014 · Replies 2 · Mar 17, 2014

Replies: 2

Views: 3K

How Do Quantum Theory and Software Model Large Atoms Like Iron?

Mar 15, 2014 · Replies 6 · Mar 16, 2014

Replies: 6

Views: 2K

Should I use Quantum ESPRESSO or Material Studio?

Feb 25, 2014 · Replies 1 · Mar 15, 2014

Replies: 1

Views: 4K

First-variational and second-variational eigenvectors

Mar 12, 2014 · Replies 4 · Mar 14, 2014

Replies: 4

Views: 3K

Why do electrons in SP3 orbitals need opposite spins in molecular bonding?

Mar 12, 2014 · Replies 2 · Mar 14, 2014

Replies: 2

Views: 5K

Solution of Dirac Delta DOS Equation

Mar 12, 2014 · Replies 6 · Mar 13, 2014

Replies: 6

Views: 3K

How does zirconium-oxide coating reduce work function in SEM tips?

Mar 12, 2014 · Replies 2 · Mar 12, 2014

Replies: 2

Views: 3K

Crosslink PVA Physically: UV or Sensitizer?

Mar 5, 2014 · Replies 3 · Mar 6, 2014

Replies: 3

Views: 3K

Solid State: Diamond lattice and scattering

Mar 2, 2014 · Replies 3 · Mar 3, 2014

Replies: 3

Views: 3K

Questions about superconductivity

Feb 20, 2014 · Replies 3 · Feb 28, 2014

Replies: 3

Views: 3K

Kitaev's Periodic Table (of Topological Insulators & SCs)

May 6, 2012 · Replies 20 · Feb 26, 2014

Replies: 20

Views: 10K

Easy Guide to Understanding LAPW Method for Beginners

Sep 20, 2013 · Replies 2 · Feb 24, 2014

Replies: 2

Views: 3K

How Can dI/dV Help Determine Fermi Level and Band Gap in Semiconductors?

Feb 23, 2014 · Replies 1 · Feb 23, 2014

Replies: 1

Views: 3K

Interatomic potentials for diatomic systems

Feb 17, 2014 · Replies 1 · Feb 20, 2014

Replies: 1

Views: 3K

Fermi energy in semiconductors

Feb 13, 2014 · Replies 4 · Feb 20, 2014

Replies: 4

Views: 3K

Can I get Bandgap of 3D material with 1D Hamiltonian

Feb 18, 2014 · Replies 1 · Feb 19, 2014

Replies: 1

Views: 2K

One dimensional diatomic lattice oscillations

Feb 12, 2014 · Replies 4 · Feb 19, 2014

Replies: 4

Views: 4K

Can Atomic Clocks Measure Time Accurately Underground?

Jan 20, 2014 · Replies 13 · Feb 16, 2014

Replies: 13

Views: 3K

Why don't electron go into the next orbit during stimulated emission?

Feb 15, 2014 · Replies 1 · Feb 15, 2014

Replies: 1

Views: 4K

Ising Model for Spins: External Magnetic Field Effect

Feb 14, 2014 · Replies 1 · Feb 14, 2014

Replies: 1

Views: 3K

Are Phase Transitions Caused by Instabilities or Spontaneous Symmetry Breaking?

Feb 11, 2014 · Replies 6 · Feb 13, 2014

Replies: 6

Views: 3K

Atomic and Condensed Matter

Welcome to the Atomic Physics forum!

Atomic and condensed matter physics are two closely related branches of physics. Atomic physics focuses on the study of atoms, investigating their structure, behavior, and interactions with electromagnetic radiation.

It delves into phenomena such as atomic spectra, quantum states, and atomic transitions. Condensed matter physics, on the other hand, extends these principles to study the properties and behaviors of solid and liquid matter in bulk, dealing with materials like metals, semiconductors, and liquids.

This field explores concepts such as phase transitions, crystal structures, and electronic properties of condensed phases. Both atomic and condensed matter physics contribute significantly to our understanding of the fundamental properties of matter and find applications in various technological advancements and material science.

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