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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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Drift speed of electrons and holes in semiconductors

Dec 11, 2009 · Replies 10 · Feb 11, 2010

Replies: 10

Views: 13K

Space groups derivation (Schoenflies)

Feb 10, 2010 · Replies 2 · Feb 11, 2010

Replies: 2

Views: 3K

Elastic deformation of a solid body & heat

Feb 8, 2010 · Replies 1 · Feb 10, 2010

Replies: 1

Views: 3K

How to experimentally determine whether have adirect or indirect semiconductor?

Feb 8, 2010 · Replies 1 · Feb 9, 2010

Replies: 1

Views: 4K

Proof that the n brillouin zones are of equal areas?

Feb 7, 2010 · Replies 2 · Feb 8, 2010

Replies: 2

Views: 4K

Large Static E Field, Dielectric Break Down, Quantum View

Feb 1, 2010 · Replies 3 · Feb 8, 2010

Replies: 3

Views: 4K

Band gap - violation of principle of least energy?

Feb 7, 2010 · Replies 3 · Feb 7, 2010

Replies: 3

Views: 2K

Lithium Gas: Solid to Gas Conversion Processes?

Feb 7, 2010 · Replies 1 · Feb 7, 2010

Replies: 1

Views: 14K

Hamiltonian of a metal lattice

Feb 2, 2010 · Replies 1 · Feb 5, 2010

Replies: 1

Views: 2K

What is Spin Temperature? - Definition & Explanation

Jan 31, 2010 · Replies 2 · Feb 5, 2010

Replies: 2

Views: 5K

Understanding Molecule Theory: Tips and Tricks for Hands-On Physics Enthusiasts

Feb 3, 2010 · Replies 7 · Feb 5, 2010

Replies: 7

Views: 3K

Why Does Electron Flow Differ in Direction at a Metal-Semiconductor Junction?

Feb 4, 2010 · Replies 1 · Feb 5, 2010

Replies: 1

Views: 3K

Fermi Dirac distribution function

Feb 3, 2010 · Replies 6 · Feb 4, 2010

Replies: 6

Views: 7K

Water O-H Bond Length: Evidence & Measurement

Mar 15, 2009 · Replies 4 · Feb 3, 2010

Replies: 4

Views: 32K

Broken symmetry, superconductivity and all that

Dec 11, 2009 · Replies 22 · Feb 3, 2010

Replies: 22

Views: 12K

Vanishing fermi level and cut off value in self energy

Feb 2, 2010 · Replies 2 · Feb 2, 2010

Replies: 2

Views: 3K

Effect of electric field on water

Jan 26, 2010 · Replies 4 · Feb 1, 2010

Replies: 4

Views: 7K

How Does the Fermi Level Influence Solar Cell Voltage?

Jan 28, 2010 · Replies 8 · Feb 1, 2010

Replies: 8

Views: 4K

Laser: Second harmonic generation

Jan 23, 2010 · Replies 7 · Feb 1, 2010

Replies: 7

Views: 5K

Understanding the Strain Tensor Component: Physical Meaning of d'_{ijk}E_{k}

Jan 30, 2010 · Replies 2 · Jan 31, 2010

Replies: 2

Views: 3K

Capacitance of a forward biased diode

Jan 29, 2010 · Replies 1 · Jan 30, 2010

Replies: 1

Views: 7K

How to calculate lattice parameters?

Dec 30, 2009 · Replies 8 · Jan 30, 2010

Replies: 8

Views: 19K

Calculating Phonon Self Energy for Electron-Phonon Interaction in Graphene

Jan 21, 2010 · Replies 6 · Jan 28, 2010

Replies: 6

Views: 7K

Crystal field effect on level splitting

Jan 26, 2010 · Replies 2 · Jan 27, 2010

Replies: 2

Views: 3K

A question about the Inglis-Teller limit?

Oct 18, 2007 · Replies 2 · Jan 27, 2010

Replies: 2

Views: 4K

Calculate Transmission & Concentration Using Beer-Lambert Law

Jan 25, 2010 · Replies 1 · Jan 26, 2010

Replies: 1

Views: 7K

Effect of Compression on Fermi Energy.

Jan 24, 2010 · Replies 1 · Jan 24, 2010

Replies: 1

Views: 6K

How do electrons in tungsten atoms produce X-rays?

Jan 23, 2010 · Replies 3 · Jan 23, 2010

Replies: 3

Views: 4K

Understanding Coherence in Laser Light Emission

Jan 17, 2010 · Replies 23 · Jan 22, 2010

Replies: 23

Views: 22K

Relationship between Electron Momentum and Fermi Momentum

Jan 17, 2010 · Replies 4 · Jan 21, 2010

Replies: 4

Views: 10K

Why Can't We Pass Through Solid Objects if Atoms Are Mostly Empty Space?

Jan 20, 2010 · Replies 2 · Jan 21, 2010

Replies: 2

Views: 3K

Free Electron Model: Success & Metallic Density of States

Jan 20, 2010 · Replies 2 · Jan 21, 2010

Replies: 2

Views: 4K

What is atomic concentration and how can it be found for different elements?

Jan 19, 2010 · Replies 4 · Jan 19, 2010

Replies: 4

Views: 31K

Coulomb's Explosion: Macroscopic Level?

Jan 17, 2010 · Replies 1 · Jan 18, 2010

Replies: 1

Views: 2K

What are the best resources for understanding MO and LCAO in quantum chemistry?

Jan 13, 2010 · Replies 4 · Jan 17, 2010

Replies: 4

Views: 5K

Fine Structure Effects: Physical Interpretation

Jan 16, 2010 · Replies 1 · Jan 16, 2010

Replies: 1

Views: 2K

Analysis of Lorentz Force in Semiconductor

Jan 16, 2010 · Replies 1 · Jan 16, 2010

Replies: 1

Views: 3K

Energy Bands and Brillouin Zones

Jan 13, 2010 · Replies 4 · Jan 16, 2010

Replies: 4

Views: 8K

Main Applications of ARPES today?

Jan 13, 2010 · Replies 1 · Jan 13, 2010

Replies: 1

Views: 3K

Difference between 1D lattice and 2D lattice on BEC

Jan 5, 2010 · Replies 4 · Jan 12, 2010

Replies: 4

Views: 5K

How are emission spectra of gases affected by being in water?

Jan 1, 2010 · Replies 5 · Jan 10, 2010

Replies: 5

Views: 3K

Phi (1.6) Found at Quantum Level: Major Breakthrough?

Jan 10, 2010 · Replies 1 · Jan 10, 2010

Replies: 1

Views: 3K

What is Phonon Replica? A Brief Explanation

Nov 24, 2009 · Replies 1 · Jan 10, 2010

Replies: 1

Views: 10K

Photoluminescence vs Absorption

Jan 4, 2010 · Replies 1 · Jan 10, 2010

Replies: 1

Views: 5K

Calculating the Bohr radius or velocity of an excitons

Jan 7, 2010 · Replies 1 · Jan 8, 2010

Replies: 1

Views: 3K

Partition Function for Phonons

Jan 7, 2010 · Replies 1 · Jan 7, 2010

Replies: 1

Views: 5K

Understanding Effective Mass in Solid State Physics

Mar 2, 2007 · Replies 14 · Jan 4, 2010

Replies: 14

Views: 24K

Justification of Molecular Dynamics (MD)

Dec 28, 2009 · Replies 5 · Jan 4, 2010

Replies: 5

Views: 3K

Material with net angular momentum (not just a magnet)

Jan 1, 2010 · Replies 3 · Jan 1, 2010

Replies: 3

Views: 3K

Energy spectrum from dispersion relation E(k)

Dec 30, 2009 · Replies 4 · Dec 30, 2009

Replies: 4

Views: 5K

Current limitation through multijunction solar cell

Dec 13, 2009 · Replies 1 · Dec 30, 2009

Replies: 1

Views: 3K

How Do Inert Gases Form Crystals According to Charles Kittel?

Dec 28, 2009 · Replies 3 · Dec 29, 2009

Replies: 3

Views: 6K

Laser: CW-oscillation in a 3-level laser

Dec 28, 2009 · Replies 1 · Dec 28, 2009

Replies: 1

Views: 5K

Metals with what type of crystal lattice less prone to brittle fracture?

Dec 24, 2009 · Replies 3 · Dec 25, 2009

Replies: 3

Views: 5K

Do you know the meaning of the Zero phonon or phonon-assisted?

Dec 18, 2009 · Replies 2 · Dec 24, 2009

Replies: 2

Views: 4K

Methods for determination of structure of solid?

Dec 10, 2009 · Replies 3 · Dec 23, 2009

Replies: 3

Views: 4K

What actually are electron holes?

Dec 22, 2009 · Replies 3 · Dec 23, 2009

Replies: 3

Views: 3K

Thermal expansion (anharmonic effect)

Dec 22, 2009 · Replies 3 · Dec 22, 2009

Replies: 3

Views: 4K

Numerical evaluation of Sommerfeld Integral

Aug 6, 2009 · Replies 1 · Dec 18, 2009

Replies: 1

Views: 11K

How Do I Calculate the Dynamical Matrix for a Crystal with a Pair Potential?

Oct 6, 2009 · Replies 3 · Dec 18, 2009

Replies: 3

Views: 6K

Difference b/w excited state and metastable excited sate?

Dec 5, 2009 · Replies 5 · Dec 18, 2009

Replies: 5

Views: 11K

Surface Greens' function in coherent transport calculations

Jul 11, 2008 · Replies 8 · Dec 17, 2009

Replies: 8

Views: 5K

Superconductivity: difference between s-wave and d-wave

Dec 16, 2009 · Replies 6 · Dec 16, 2009

Replies: 6

Views: 21K

Poll

Does the superconductivity-Meissner effect break electromagnetic symmetry?

Dec 13, 2009 · Replies 1 · Dec 14, 2009

Replies: 1

Views: 3K

Rotational spectrum - equidistance

Dec 11, 2009 · Replies 4 · Dec 13, 2009

Replies: 4

Views: 3K

STM Questions: Graphite Surface Reconstruction

Dec 9, 2009 · Replies 1 · Dec 11, 2009

Replies: 1

Views: 2K

LLG Equation + Spin Torque, A simple derivation

Dec 4, 2009 · Replies 5 · Dec 11, 2009

Replies: 5

Views: 9K

D-dimensional density of states and specific heats (phonons and electrons)

Dec 7, 2009 · Replies 4 · Dec 9, 2009

Replies: 4

Views: 7K

How Does Screening Work in a Metal with a Background Charge Density?

Dec 6, 2009 · Replies 2 · Dec 9, 2009

Replies: 2

Views: 2K

Band structure and fermi liquid

Dec 7, 2009 · Replies 1 · Dec 7, 2009

Replies: 1

Views: 3K

How Do Ashcroft and Mermin Derive the Cyclotron Effective Mass Expression?

Mar 28, 2007 · Replies 1 · Dec 6, 2009

Replies: 1

Views: 9K

Interplanar spacing d using braggs law

Dec 5, 2009 · Replies 3 · Dec 6, 2009

Replies: 3

Views: 11K

Is color added to SEM and TEM images in post-processing?

Dec 3, 2009 · Replies 3 · Dec 5, 2009

Replies: 3

Views: 8K

Can a 1 kilometer giant straw function like a regular straw?

Dec 4, 2009 · Replies 1 · Dec 5, 2009

Replies: 1

Views: 2K

Langevin dynamics random force term generation algorithm

Aug 11, 2008 · Replies 2 · Dec 4, 2009

Replies: 2

Views: 7K

Does the smallest unit of matter possess depth or space?

Dec 3, 2009 · Replies 4 · Dec 4, 2009

Replies: 4

Views: 9K

Helium 3 and Artificial Creation of Isotopes

Dec 1, 2009 · Replies 10 · Dec 3, 2009

Replies: 10

Views: 6K

Can the Plasmon Frequency in Metals Be Changed Experimentally?

Dec 3, 2009 · Replies 1 · Dec 3, 2009

Replies: 1

Views: 6K

Applying Ising Model to High Temp Superconductors

Nov 24, 2009 · Replies 3 · Dec 2, 2009

Replies: 3

Views: 4K

Lorentz Cavity in Uniformly Polarised Dielectric: Exam Question

Nov 29, 2009 · Replies 1 · Dec 1, 2009

Replies: 1

Views: 5K

Depletion depth in a PIN diode

Oct 30, 2008 · Replies 11 · Nov 30, 2009

Replies: 11

Views: 19K

Energy of 3D free electron gas.

Nov 29, 2009 · Replies 3 · Nov 30, 2009

Replies: 3

Views: 7K

Matsubara frequency convergency factor

Sep 22, 2009 · Replies 2 · Nov 30, 2009

Replies: 2

Views: 4K

Explaining electrical resistivity behaviour from phonon perspective

Nov 18, 2009 · Replies 5 · Nov 29, 2009

Replies: 5

Views: 3K

What is the Density of States (DOS) for Metallic Carbon Nanotubes?

Nov 15, 2009 · Replies 2 · Nov 29, 2009

Replies: 2

Views: 2K

Ionization vs. photo-generation - what is the difference?

Nov 25, 2009 · Replies 3 · Nov 27, 2009

Replies: 3

Views: 5K

Crystal field theory, what is spin?

Dec 6, 2006 · Replies 9 · Nov 27, 2009

Replies: 9

Views: 5K

Subatomic Reversibility of Time?

Nov 26, 2009 · Replies 1 · Nov 26, 2009

Replies: 1

Views: 2K

What is the meaning of Vbe and Vce in a transistor amplifier?

Nov 20, 2009 · Replies 9 · Nov 26, 2009

Replies: 9

Views: 4K

ZENER BREAKDOWN has caused me a breakdown

Nov 20, 2009 · Replies 8 · Nov 25, 2009

Replies: 8

Views: 5K

Isolating Single Atoms: Experiments & Application

Nov 25, 2009 · Replies 2 · Nov 25, 2009

Replies: 2

Views: 2K

Stimulated Emission: Why Are Photons In Phase?

Oct 23, 2009 · Replies 18 · Nov 24, 2009

Replies: 18

Views: 8K

Does the Keldysh Formalism Address the Loopholes in Kubo's Theory?

Nov 20, 2009 · Replies 14 · Nov 24, 2009

Replies: 14

Views: 5K

Band theory of Conduction, what constititue resistance?

Nov 11, 2009 · Replies 14 · Nov 24, 2009

Replies: 14

Views: 6K

Fermionic Condensate: A State of Matter?

Nov 21, 2009 · Replies 2 · Nov 23, 2009

Replies: 2

Views: 2K

Interatomic forces in an ensemble via vector analysis

Nov 23, 2009 · Replies 1 · Nov 23, 2009

Replies: 1

Views: 2K

Measuring the Boltmann constant by the IV curve of a diode

Nov 19, 2009 · Replies 4 · Nov 22, 2009

Replies: 4

Views: 8K

Why Are Effective Mass and Bands Simplified in Semiconductor Analysis?

Nov 22, 2009 · Replies 1 · Nov 22, 2009

Replies: 1

Views: 5K

How Does Voltage Drop Occur in Diodes Despite Forward Bias?

Nov 20, 2009 · Replies 1 · Nov 21, 2009

Replies: 1

Views: 4K

Depletion region in pn juction

Oct 9, 2009 · Replies 13 · Nov 20, 2009

Replies: 13

Views: 12K

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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