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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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The Mysterious Nature of Neutrons: Stability & Binding

Jun 29, 2009 · Replies 3 · Jun 30, 2009

Replies: 3

Views: 3K

Deriving electrical conduction in 2d crystal

Jun 27, 2009 · Replies 4 · Jun 29, 2009

Replies: 4

Views: 2K

The meaning of the sign of the wavefunction in electronic structure

Jun 23, 2009 · Replies 6 · Jun 25, 2009

Replies: 6

Views: 16K

First principle calculation of lattice structures

Jun 20, 2009 · Replies 8 · Jun 24, 2009

Replies: 8

Views: 5K

Calculating Average Spins at Site i for Ising Model via Transfer Matrix

Jun 1, 2009 · Replies 1 · Jun 23, 2009

Replies: 1

Views: 2K

Control of matter on an atomic and molecular scale

Jun 17, 2009 · Replies 7 · Jun 21, 2009

Replies: 7

Views: 2K

Two dirac cones are described by two bi-spinors of different chirality

Jun 20, 2009 · Replies 5 · Jun 21, 2009

Replies: 5

Views: 7K

Toshiba claims germanium breakthrough for 16nm chips (article title)

Jun 15, 2009 · Replies 7 · Jun 20, 2009

Replies: 7

Views: 3K

Find a SiC Heater for PLD System

Jun 17, 2009 · Replies 7 · Jun 20, 2009

Replies: 7

Views: 2K

Why Does n=2 Not Produce an Equally Strong Peak in X-ray Diffraction?

Jun 10, 2009 · Replies 1 · Jun 19, 2009

Replies: 1

Views: 5K

Can You Make a Laser That Can Burn?

Jun 4, 2009 · Replies 19 · Jun 19, 2009

Replies: 19

Views: 12K

What is the ladder approximation and how does it work?

Jun 16, 2009 · Replies 2 · Jun 17, 2009

Replies: 2

Views: 5K

Is the Effective Mass of a Superfluid Helium Atom Zero?

Jun 14, 2009 · Replies 1 · Jun 14, 2009

Replies: 1

Views: 2K

Ginzberg-Landau and the Cooper Pair

Jun 5, 2009 · Replies 35 · Jun 13, 2009

2

Replies: 35

Views: 8K

How to calculate the gap for a solid?

Jun 8, 2009 · Replies 2 · Jun 11, 2009

Replies: 2

Views: 3K

Electron position in transparent materials and bit more

Jun 7, 2009 · Replies 3 · Jun 7, 2009

Replies: 3

Views: 3K

Photon Absorption: Can It Still Happen?

Jun 2, 2009 · Replies 8 · Jun 5, 2009

Replies: 8

Views: 13K

Wannier-stark state calculation

Mar 4, 2009 · Replies 5 · Jun 5, 2009

Replies: 5

Views: 4K

Wave of phase change (MOVIE: Hot ice how-to)

Jun 2, 2009 · Replies 5 · Jun 2, 2009

Replies: 5

Views: 3K

If helium is 'superfluid' at low temperatures

May 7, 2009 · Replies 14 · Jun 1, 2009

Replies: 14

Views: 5K

Are conduction electrons localized in space?

Apr 20, 2009 · Replies 79 · May 31, 2009

3

Replies: 79

Views: 14K

How indirect band semiconductors are used in lasers ?

May 27, 2009 · Replies 3 · May 28, 2009

Replies: 3

Views: 5K

Wanted: Band Offsets for Quantum Wells

May 27, 2009 · Replies 1 · May 27, 2009

Replies: 1

Views: 2K

What aspects of atom are discrete?

May 23, 2009 · Replies 11 · May 27, 2009

Replies: 11

Views: 4K

Local density of states (LDOS) is

May 24, 2009 · Replies 1 · May 26, 2009

Replies: 1

Views: 8K

Reflectivity of metals and elements

May 20, 2009 · Replies 6 · May 25, 2009

Replies: 6

Views: 14K

Plasmon vs Electrical Wave: Difference Explained

May 16, 2009 · Replies 1 · May 24, 2009

Replies: 1

Views: 2K

Learn the Basics of Semiconductor Laser Operation

May 20, 2009 · Replies 3 · May 23, 2009

Replies: 3

Views: 4K

Supercurrent can flow forever in a superconductor

May 7, 2009 · Replies 10 · May 23, 2009

Replies: 10

Views: 5K

Laser question (non-molecular, bi-molecular and auger recombination)

Apr 19, 2009 · Replies 1 · May 22, 2009

Replies: 1

Views: 4K

Band Gap Formation: Bragg Reflection & Standing Waves

Apr 25, 2009 · Replies 2 · May 22, 2009

Replies: 2

Views: 6K

Effective mass of electrons in metals

May 12, 2009 · Replies 3 · May 22, 2009

Replies: 3

Views: 10K

Building blocks of the conduction and valence band

Jan 8, 2009 · Replies 3 · May 22, 2009

Replies: 3

Views: 4K

Calculating Lattice Constant from Diffraction Pattern: Step-by-Step Guide

May 15, 2009 · Replies 1 · May 21, 2009

Replies: 1

Views: 3K

Is helium truly a frictionless superfluid?

May 2, 2009 · Replies 5 · May 21, 2009

Replies: 5

Views: 4K

Why Rb85 is difficult to bose-condense?

May 19, 2009 · Replies 6 · May 21, 2009

Replies: 6

Views: 3K

Band gaps between metals and insulators

May 19, 2009 · Replies 12 · May 20, 2009

Replies: 12

Views: 7K

What distinguishes a metal from a nonmetal in terms of atomic structure?

May 6, 2009 · Replies 10 · May 18, 2009

Replies: 10

Views: 12K

Why do electrons in excited states decay to the ground state?

Apr 25, 2009 · Replies 25 · May 16, 2009

Replies: 25

Views: 17K

A question on Fermi free gas model

May 16, 2009 · Replies 2 · May 16, 2009

Replies: 2

Views: 3K

Calculating the Dielectric Constant of Cold Dilute Rubidium Gas

May 15, 2009 · Replies 4 · May 15, 2009

Replies: 4

Views: 6K

Strange behavior of 3d level of Helium

Apr 11, 2009 · Replies 9 · May 15, 2009

Replies: 9

Views: 3K

Do Phonons Have Momentum and Rest Mass?

May 14, 2009 · Replies 6 · May 14, 2009

Replies: 6

Views: 6K

Glass Transparency: What Allows Visible Light to Pass Through?

May 14, 2009 · Replies 4 · May 14, 2009

Replies: 4

Views: 3K

Error in bandgap measurements of n-type Ge

May 13, 2009 · Replies 1 · May 13, 2009

Replies: 1

Views: 3K

Is Bragg's Law Equation Modified for Different Incidence Angles?

May 11, 2009 · Replies 4 · May 12, 2009

Replies: 4

Views: 7K

Chemical potential-fictitious atoms

May 10, 2009 · Replies 9 · May 11, 2009

Replies: 9

Views: 6K

Questions About Atoms: Protons & Neutrons

May 10, 2009 · Replies 4 · May 11, 2009

Replies: 4

Views: 3K

Band Gap in a Square Quantum Well

May 10, 2009 · Replies 3 · May 11, 2009

Replies: 3

Views: 4K

How to Calculate Heat Capacity of One-Dimensional Anharmonic Oscillator?

May 8, 2009 · Replies 3 · May 9, 2009

Replies: 3

Views: 5K

What is a diffusion path in scientific terms?

May 8, 2009 · Replies 1 · May 8, 2009

Replies: 1

Views: 5K

Microscopic theory of superconductivity

May 6, 2009 · Replies 5 · May 7, 2009

Replies: 5

Views: 3K

How Do You Calculate the Lattice Constant Using Bragg's Law?

May 3, 2009 · Replies 4 · May 5, 2009

Replies: 4

Views: 9K

Fermi Energy in 2D: Find Relation w/ 3D E=h(cut square)k(square)/2m

May 3, 2009 · Replies 3 · May 5, 2009

Replies: 3

Views: 9K

Azimuthal direction vector notation

Apr 26, 2009 · Replies 7 · May 4, 2009

Replies: 7

Views: 9K

What is the typical resistance for GMR in 3-layer Fe-Cu-Fe configuration?

Nov 24, 2005 · Replies 2 · May 4, 2009

Replies: 2

Views: 3K

Are BECs superfluid or vice versa or what?

Apr 29, 2009 · Replies 7 · May 2, 2009

Replies: 7

Views: 4K

Why amorphous phase materials have wider bandgap?

Aug 21, 2004 · Replies 5 · May 1, 2009

Replies: 5

Views: 10K

Calculating the Dipole Moment of Benzene Rings

May 1, 2009 · Replies 1 · May 1, 2009

Replies: 1

Views: 3K

Do SuperFluids respond to Magnetic Fields?

Sep 20, 2008 · Replies 20 · May 1, 2009

Replies: 20

Views: 12K

When were Bose-Einstein and Fermi-Dirac statistics first defined?

Apr 30, 2009 · Replies 1 · Apr 30, 2009

Replies: 1

Views: 3K

Reference for photoluminescence data?

Apr 28, 2009 · Replies 2 · Apr 30, 2009

Replies: 2

Views: 3K

Twin Grain Boundary and Symmetric Tilt Grain boundary.

Apr 29, 2009 · Replies 1 · Apr 29, 2009

Replies: 1

Views: 7K

What does a high Debye temperature signify?

Apr 28, 2009 · Replies 3 · Apr 29, 2009

Replies: 3

Views: 16K

Rutherford Atom Model: Did He Know Structure of Alpha Particles?

Apr 25, 2009 · Replies 1 · Apr 27, 2009

Replies: 1

Views: 3K

What Causes the Mass Defect in a 15N Nucleus?

Apr 27, 2009 · Replies 1 · Apr 27, 2009

Replies: 1

Views: 8K

Explain molar absorptivity to a dumb physicist.

Apr 16, 2007 · Replies 5 · Apr 27, 2009

Replies: 5

Views: 15K

Understanding Angle Resolved Photoemission Spectroscopy in Solids

Apr 25, 2009 · Replies 4 · Apr 27, 2009

Replies: 4

Views: 3K

How Did Rutherford Confirm Alpha Particles Struck the Zinc Sulfide Screen?

Apr 25, 2009 · Replies 1 · Apr 26, 2009

Replies: 1

Views: 3K

If diamonds are made of carbon? and coal is made out carbon

Apr 20, 2009 · Replies 9 · Apr 26, 2009

Replies: 9

Views: 6K

Partition Function of CO2 at 1000K - Database?

Apr 23, 2009 · Replies 3 · Apr 24, 2009

Replies: 3

Views: 4K

Question on Molecular dynamics programming

Apr 23, 2009 · Replies 5 · Apr 24, 2009

Replies: 5

Views: 4K

Crystal Planes, Miller Indices: Cubic Lattice

Oct 4, 2005 · Replies 14 · Apr 23, 2009

Replies: 14

Views: 44K

Finite Differences in Inhomogeneous Media

Apr 21, 2009 · Replies 1 · Apr 21, 2009

Replies: 1

Views: 3K

Understanding DFT & Graphene: Schrodinger vs Dirac

Mar 17, 2009 · Replies 6 · Apr 20, 2009

Replies: 6

Views: 9K

What is a Bragg Point in the Context of BEC of Triplet States?

Mar 13, 2006 · Replies 2 · Apr 19, 2009

Replies: 2

Views: 4K

Space group notation and related point groups

Apr 8, 2009 · Replies 2 · Apr 18, 2009

Replies: 2

Views: 5K

Acoustic phonon as a goldstone mode

Apr 17, 2009 · Replies 2 · Apr 17, 2009

Replies: 2

Views: 6K

Umklapp Scattering: Causes, Importance, and Phonon Momentum

Apr 15, 2009 · Replies 1 · Apr 16, 2009

Replies: 1

Views: 5K

X-ray spectroscopy in labs studying Fluorescence

Apr 16, 2009 · Replies 2 · Apr 16, 2009

Replies: 2

Views: 3K

Does emission depend linearly on concentration?

Apr 16, 2009 · Replies 1 · Apr 16, 2009

Replies: 1

Views: 2K

Molecular Orbital Theory: 2s/3s & 2p Orthogonality Questions

Apr 16, 2009 · Replies 1 · Apr 16, 2009

Replies: 1

Views: 7K

Diodes at super low temperatures

Apr 15, 2009 · Replies 7 · Apr 15, 2009

Replies: 7

Views: 3K

Frequency of Virbration in Covalent Bonds

Apr 14, 2009 · Replies 2 · Apr 14, 2009

Replies: 2

Views: 7K

Gaussian pulse equation in Laser?

Apr 11, 2009 · Replies 3 · Apr 13, 2009

Replies: 3

Views: 12K

Chemical Potential: Physical Definition and Applications

Apr 9, 2009 · Replies 6 · Apr 12, 2009

Replies: 6

Views: 5K

Optical dipole trap for bec

Apr 12, 2009 · Replies 1 · Apr 12, 2009

Replies: 1

Views: 2K

Periodic boundary conditions and Bloch's theorem

Feb 8, 2008 · Replies 8 · Apr 11, 2009

Replies: 8

Views: 15K

Atomic Radius of H & He: Why is H Larger?

Apr 10, 2009 · Replies 3 · Apr 10, 2009

Replies: 3

Views: 30K

Is a Hydrogen Nucleus the Same as a Proton?

Apr 10, 2009 · Replies 3 · Apr 10, 2009

Replies: 3

Views: 4K

Landauer Formula for 1D Transport

Apr 3, 2009 · Replies 2 · Apr 10, 2009

Replies: 2

Views: 6K

Is the Exchange-Correlation Hole Truly Positive in a Homogeneous Electron Gas?

Apr 9, 2009 · Replies 1 · Apr 9, 2009

Replies: 1

Views: 4K

Fictitious Hydrogen Charges: 0.5 & 1.5 - What's the Difference?

Mar 30, 2009 · Replies 7 · Apr 9, 2009

Replies: 7

Views: 5K

Delat energy required to excite hole from lowest energy orbit to valence band?

Apr 7, 2009 · Replies 1 · Apr 8, 2009

Replies: 1

Views: 3K

He I, He II and He III questions

Mar 31, 2009 · Replies 5 · Apr 7, 2009

Replies: 5

Views: 10K

Band Diagram of a Metal-Semiconductor Contact

Apr 3, 2009 · Replies 1 · Apr 6, 2009

Replies: 1

Views: 10K

Signal Propagation: How Does It Effect & What Are Characteristics?

Apr 3, 2009 · Replies 4 · Apr 6, 2009

Replies: 4

Views: 2K

Looking for comparison of superconductors

Apr 5, 2009 · Replies 7 · Apr 6, 2009

Replies: 7

Views: 3K

Critical field/temperature plots for HTSCs

Apr 3, 2009 · Replies 2 · Apr 6, 2009

Replies: 2

Views: 2K

What is the Relationship Between Fermi Velocity and Fermi Energy?

Mar 24, 2009 · Replies 6 · Apr 3, 2009

Replies: 6

Views: 37K

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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