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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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Snake instability and vortex pair

Dec 9, 2014 · Replies 8 · Apr 8, 2015

Replies: 8

Views: 2K

Information about absorption cross section

Apr 3, 2015 · Replies 1 · Apr 8, 2015

Replies: 1

Views: 2K

Fermi Level and density of states

Mar 30, 2015 · Replies 6 · Apr 7, 2015

Replies: 6

Views: 5K

Can QED solve all solid state problems?

Apr 7, 2015 · Replies 1 · Apr 7, 2015

Replies: 1

Views: 2K

Charge radius of a proton as a function of its mass

Apr 4, 2015 · Replies 3 · Apr 5, 2015

Replies: 3

Views: 1K

How to dope a chemical compound?

Apr 3, 2015 · Replies 2 · Apr 4, 2015

Replies: 2

Views: 3K

How to find atomicity of solid elements as can't apply the gas law

Apr 2, 2015 · Replies 1 · Apr 2, 2015

Replies: 1

Views: 1K

Superconductivity Research ideas

Apr 1, 2015 · Replies 2 · Apr 2, 2015

Replies: 2

Views: 2K

Why do insulators appear transparent?

Mar 31, 2015 · Replies 9 · Apr 1, 2015

Replies: 9

Views: 6K

Band Structure of a solid is not related to the size/doping?

Mar 31, 2015 · Replies 4 · Apr 1, 2015

Replies: 4

Views: 3K

Why removal of other electrons cause binding energy increase

Apr 1, 2015 · Replies 1 · Apr 1, 2015

Replies: 1

Views: 1K

What is the biggest challenge to improve white LEDs?

Mar 29, 2015 · Replies 2 · Mar 31, 2015

Replies: 2

Views: 1K

Superposition of energy levels

Mar 28, 2015 · Replies 7 · Mar 31, 2015

Replies: 7

Views: 2K

Where can i get some semiconductor wire?

Mar 29, 2015 · Replies 6 · Mar 30, 2015

Replies: 6

Views: 3K

Bragg's Law Experiment: Questions and Answers

Mar 24, 2015 · Replies 4 · Mar 28, 2015

Replies: 4

Views: 3K

Ohmic vs Rectifying Contact: N+ & N-Type Semiconductors

Feb 23, 2015 · Replies 1 · Mar 27, 2015

Replies: 1

Views: 2K

Conductor Behavior at Absolute 0 Temperature

Mar 22, 2015 · Replies 10 · Mar 27, 2015

Replies: 10

Views: 3K

Solving Coulomb Barrier: Calculating Energy w/e2 Units

Mar 26, 2015 · Replies 1 · Mar 27, 2015

Replies: 1

Views: 2K

Calculation of total ionization cross section

Mar 24, 2015 · Replies 1 · Mar 24, 2015

Replies: 1

Views: 2K

Stokes Shift in Hydrogen Spectrum ?

Aug 13, 2014 · Replies 8 · Mar 24, 2015

Replies: 8

Views: 4K

Explaining Band theory and Momentum Space to laymen?

Mar 22, 2015 · Replies 2 · Mar 24, 2015

Replies: 2

Views: 2K

Atoms and energy levels question

Mar 23, 2015 · Replies 2 · Mar 23, 2015

Replies: 2

Views: 2K

Importance of knowing the Curie temperature?

Mar 23, 2015 · Replies 1 · Mar 23, 2015

Replies: 1

Views: 3K

Why do resistivity and conductivity change with temperature?

Mar 18, 2015 · Replies 2 · Mar 21, 2015

Replies: 2

Views: 2K

Green Laser Question: Explaining the Double Pumping Method

Mar 21, 2015 · Replies 1 · Mar 21, 2015

Replies: 1

Views: 2K

Solving My Confusion: States in Energy Band

Mar 18, 2015 · Replies 5 · Mar 21, 2015

Replies: 5

Views: 2K

Polarization and energy level transitions

Mar 19, 2015 · Replies 2 · Mar 21, 2015

Replies: 2

Views: 2K

What is the best referece book to study atomic structure?

Mar 21, 2015 · Replies 1 · Mar 21, 2015

Replies: 1

Views: 4K

Semiconductor Energy Gap: Silicon Explained

Mar 20, 2015 · Replies 2 · Mar 20, 2015

Replies: 2

Views: 2K

Does the Water during sonoluminescence heat up?

Mar 19, 2015 · Replies 6 · Mar 19, 2015

Replies: 6

Views: 2K

Fermi Energy's plausible, but why define Fermi Temperature?

Mar 17, 2015 · Replies 12 · Mar 18, 2015

Replies: 12

Views: 5K

Fermi Level Concept: Probability & Forbidden Gap

Mar 17, 2015 · Replies 3 · Mar 17, 2015

Replies: 3

Views: 2K

Solving Coupled ODEs with 4th Order Runge-Kutta Method

Mar 17, 2015 · Replies 3 · Mar 17, 2015

Replies: 3

Views: 2K

Why is the effective mass of electron different for metals

Mar 10, 2015 · Replies 4 · Mar 14, 2015

Replies: 4

Views: 5K

Nearly free electron model - band gap

Mar 4, 2015 · Replies 1 · Mar 13, 2015

Replies: 1

Views: 4K

How to Determine the Basis Atom Positions in Bi2Sr2Ca2Cu3O10 for XRD Simulation?

Mar 7, 2015 · Replies 6 · Mar 11, 2015

Replies: 6

Views: 2K

Mobility of 2D material, sigma=N*e*mu with N surface density

Mar 9, 2015 · Replies 1 · Mar 11, 2015

Replies: 1

Views: 3K

Phonon Energy and Density of States

Mar 10, 2015 · Replies 2 · Mar 11, 2015

Replies: 2

Views: 2K

Derivation of the Boltzmann distribution (Dr. David Tong)

Mar 8, 2015 · Replies 2 · Mar 10, 2015

Replies: 2

Views: 2K

Why is black phosphorus semiconductor with direct bandgap?

Mar 9, 2015 · Replies 1 · Mar 10, 2015

Replies: 1

Views: 2K

Molecular Orbital & Normal Modes

Feb 17, 2015 · Replies 21 · Mar 9, 2015

Replies: 21

Views: 3K

Origin of current phase relation in Josepshon junction.

Mar 8, 2015 · Replies 1 · Mar 9, 2015

Replies: 1

Views: 1K

Bond energy - (Force/ potential E vs interatomic separation)

Mar 9, 2015 · Replies 1 · Mar 9, 2015

Replies: 1

Views: 5K

Simple (?) question regarding the Fermi Surface

Mar 8, 2015 · Replies 7 · Mar 8, 2015

Replies: 7

Views: 2K

Is there a quantum mechanics theory for dynamics in QW planar VCSELs?

Mar 8, 2015 · Replies 2 · Mar 8, 2015

Replies: 2

Views: 1K

Deviation of a gas from ideal gas behaviour

Mar 6, 2015 · Replies 4 · Mar 8, 2015

Replies: 4

Views: 2K

What Causes Flat Dispersion of Charge Excitations in Solids?

Mar 7, 2015 · Replies 1 · Mar 7, 2015

Replies: 1

Views: 1K

Understanding molecular absorption of light (UV-Vis spectroscopy)

Jan 31, 2013 · Replies 3 · Mar 6, 2015

Replies: 3

Views: 4K

Gibbs Free Energy in Superconductors

Mar 3, 2015 · Replies 3 · Mar 6, 2015

Replies: 3

Views: 4K

Determine the intensities of GaAs crystal planes

Mar 3, 2015 · Replies 1 · Mar 5, 2015

Replies: 1

Views: 2K

Why do the free electrons in the N-type want to diffuse?

Mar 5, 2015 · Replies 1 · Mar 5, 2015

Replies: 1

Views: 2K

Calculation of Intensity of of AX crystals

Mar 3, 2015 · Replies 2 · Mar 3, 2015

Replies: 2

Views: 2K

Determine Crystal structure of non-cubic crystal in XRD plot

Mar 1, 2015 · Replies 3 · Mar 3, 2015

Replies: 3

Views: 2K

Differences between Boltzmann and Fermi-Dirac distributions

Mar 1, 2015 · Replies 3 · Mar 2, 2015

Replies: 3

Views: 5K

Why Is the Length of the Reciprocal Lattice Vector Equal to 2π/d_hkl?

Feb 19, 2015 · Replies 11 · Mar 2, 2015

Replies: 11

Views: 3K

Excited state line width and thermodynamics

Feb 21, 2015 · Replies 4 · Mar 1, 2015

Replies: 4

Views: 3K

What are the physical implications of phonon softening?

Feb 25, 2015 · Replies 2 · Mar 1, 2015

Replies: 2

Views: 2K

Can scotch tape method get film size larger than particles?

Feb 23, 2015 · Replies 1 · Mar 1, 2015

Replies: 1

Views: 1K

Molecular Hydrogen absorption spectrum

Feb 27, 2015 · Replies 2 · Feb 28, 2015

Replies: 2

Views: 2K

Finite square well potential numerical solution

Feb 26, 2015 · Replies 1 · Feb 27, 2015

Replies: 1

Views: 2K

Expanding the Hamiltonian around a point of symmetry

Feb 27, 2015 · Replies 2 · Feb 27, 2015

Replies: 2

Views: 2K

The Orbital and Spin Momenta of Light

Feb 15, 2014 · Replies 1 · Feb 27, 2015

Replies: 1

Views: 3K

Analyzing GaAs Quantum Wells Emission Spectrum

Feb 13, 2015 · Replies 1 · Feb 26, 2015

Replies: 1

Views: 2K

Determine type of semiconductor from IV measurements of Schottky

Feb 23, 2015 · Replies 1 · Feb 25, 2015

Replies: 1

Views: 1K

Is there any refined experimental result on flux quantum?

Feb 22, 2015 · Replies 9 · Feb 25, 2015

Replies: 9

Views: 1K

Rules in determining family of planes in Hexagonal

Feb 23, 2015 · Replies 10 · Feb 25, 2015

Replies: 10

Views: 7K

How Do Orbital Interactions and Sigma Bonds Work in Methane?

Feb 24, 2015 · Replies 1 · Feb 24, 2015

Replies: 1

Views: 2K

How is the Van der Waals interaction potential calculated?

Feb 20, 2015 · Replies 5 · Feb 23, 2015

Replies: 5

Views: 2K

Understanding Band Theory: The Difference Between Conductors and Insulators

Feb 22, 2015 · Replies 1 · Feb 23, 2015

Replies: 1

Views: 2K

How can the radiation of gases be detected?

Feb 22, 2015 · Replies 6 · Feb 22, 2015

Replies: 6

Views: 1K

Using Reciprocal to Determine Miller Indices

Feb 21, 2015 · Replies 1 · Feb 22, 2015

Replies: 1

Views: 2K

What are the latest metallic superconductors discovered in the past decade?

Nov 28, 2014 · Replies 7 · Feb 22, 2015

Replies: 7

Views: 3K

A question on weight function from Ashcroft and Mermin book

Feb 8, 2015 · Replies 1 · Feb 18, 2015

Replies: 1

Views: 2K

Bulk Modulus and its derivative in a fcc lattice

Feb 17, 2015 · Replies 1 · Feb 18, 2015

Replies: 1

Views: 4K

Question about band gaps in 2D

Feb 13, 2015 · Replies 22 · Feb 17, 2015

Replies: 22

Views: 4K

What does it mean for energy absorbed and released for atom?

Feb 14, 2015 · Replies 2 · Feb 16, 2015

Replies: 2

Views: 4K

Have you read any other books about crystallography?

Feb 16, 2015 · Replies 1 · Feb 16, 2015

Replies: 1

Views: 2K

Coupling to an electric field in a tight binding model

Feb 14, 2015 · Replies 6 · Feb 16, 2015

Replies: 6

Views: 4K

What Are the Best Physics Books on Instrumental Spectroscopy?

Feb 15, 2015 · Replies 2 · Feb 15, 2015

Replies: 2

Views: 2K

How's diffraction pattern modied by phonon perturbation?

Feb 13, 2015 · Replies 2 · Feb 15, 2015

Replies: 2

Views: 2K

What distinguishes the 32 crystallographic point groups?

Feb 8, 2015 · Replies 8 · Feb 13, 2015

Replies: 8

Views: 4K

Electrons & Protons: Why Revolve Around Nucleus?

Jan 6, 2015 · Replies 12 · Feb 12, 2015

Replies: 12

Views: 2K

Suscept. of a Diamagnet (eqn): what are these variables?

Feb 11, 2015 · Replies 1 · Feb 12, 2015

Replies: 1

Views: 1K

Lattice wave dispersion relation

Feb 11, 2015 · Replies 2 · Feb 12, 2015

Replies: 2

Views: 2K

What Does Bilinear Response Mean in Mathematical Terms?

Feb 11, 2015 · Replies 5 · Feb 12, 2015

Replies: 5

Views: 2K

Why is Chromium Described as an Acceptor in TiO2?

May 10, 2013 · Replies 17 · Feb 11, 2015

Replies: 17

Views: 5K

Fermi energy in metals approximately doubling

Feb 5, 2015 · Replies 2 · Feb 8, 2015

Replies: 2

Views: 2K

How to analyze band structure and the density of states?

May 20, 2013 · Replies 7 · Feb 8, 2015

Replies: 7

Views: 11K

How Do Electron Energy Levels Form in Liquids Like H2O?

Feb 3, 2015 · Replies 6 · Feb 6, 2015

Replies: 6

Views: 2K

Why is graphene placed in a cryostat in research?

Feb 3, 2015 · Replies 2 · Feb 3, 2015

Replies: 2

Views: 2K

Spin-Charge separation seem to have been experimented

Feb 1, 2015 · Replies 15 · Feb 3, 2015

Replies: 15

Views: 3K

Is there any explanation of Josephson effect based on Schrodinger equation?

Oct 21, 2014 · Replies 5 · Feb 2, 2015

Replies: 5

Views: 2K

What can be found in the MT curves of superconductors?

Jan 28, 2015 · Replies 2 · Jan 31, 2015

Replies: 2

Views: 2K

Is There a Scientific Explanation for the Controversial Concept of Cold Fusion?

Jan 29, 2015 · Replies 3 · Jan 29, 2015

Replies: 3

Views: 2K

Broadening of emission peak - "red/blue spike"

Jan 28, 2015 · Replies 2 · Jan 28, 2015

Replies: 2

Views: 3K

Difference between Hubbard and tJ model

Jan 23, 2015 · Replies 1 · Jan 27, 2015

Replies: 1

Views: 3K

What does a magnetic moment of an atom mean?

Jan 23, 2015 · Replies 4 · Jan 26, 2015

Replies: 4

Views: 4K

How can two atomic orbitals with the same n value be orthogonal?

Jan 26, 2015 · Replies 3 · Jan 26, 2015

Replies: 3

Views: 6K

What is the role of silicon oxide in graphene visibility experiments?

Jan 26, 2015 · Replies 1 · Jan 26, 2015

Replies: 1

Views: 2K

Tight binding s-orbital for 2D binary compound

Jan 25, 2015 · Replies 4 · Jan 26, 2015

Replies: 4

Views: 2K

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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