Atomic and Condensed Matter Forum

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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.
Undergrad What happens to atoms in far detuned states?
  • Malamala
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Undergrad Less known electric/magnetic interactions with light
  • Malamala
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Undergrad What is the size and shape of single optical photon?
  • Jarek 31
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Graduate Ising model open chain and periodic boundary conditions
  • LagrangeEuler
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Undergrad Two-site "tight-binding model"
  • amjad-sh
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Graduate Wannier function in tight-binding model
  • Rzbs
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Graduate Superconductor ring: shielding currents in different directions
  • annaphys
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Undergrad Entangling atoms in a molecule
  • BillKet
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Undergrad Is the current density operator derived from fundamental considerations?
  • Paul159
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Undergrad Ramsey spectroscopy and spin echoes
  • Malamala
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Undergrad How does detuned laser frequency affect atomic dipole forces?
  • Malamala
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Undergrad Confused about spontaneous emission
  • kelly0303
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Undergrad Probe absorption and dressed states
  • BillKet
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3
High School How does the doping concentration affect the depletion width?
  • Kaushik
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Undergrad Confused about dressed states of atom
  • BillKet
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Undergrad The sum of S and L quantum numbers
  • annaphys
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Graduate What Are Examples of Exotic Order-Disorder Phase Transitions?
  • reterty
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Graduate Superconductor in a hollow cylinder -- two different end states. Why?
  • annaphys
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Graduate All-atom simulation and coarse-grained simulations
  • Sat D
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High School Missing mass in atomic systems
  • Loganwithallstate
  • · Replies 7 ·
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High School Understanding Crystal Structures: Energy Considerations
  • Adeonaja
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Graduate Crystal structures and number of bonds of each atom
  • Helena Wells
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Graduate The most striking example of vacuum fluctuations affecting experiments
  • hyksos
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Undergrad Can Quantum Entanglement Enhance Atomic Measurement Accuracy?
  • kelly0303
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Graduate Why Do Voids Form at the Thin-Film Substrate Interface After Annealing?
  • lamejane
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Undergrad Molecules when Born-Oppenheimer approximation doesn't work
  • BillKet
  • · Replies 15 ·
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Undergrad Energy of donor or acceptor levels in semiconductors
  • Helena Wells
  • · Replies 12 ·
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12
Undergrad How does the interatomic spacing of alloys differ from that of pure crystals?
  • Helena Wells
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Undergrad Changes in angular momentum for ro-vibrational transitions
  • Malamala
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Undergrad Discover SiGe Alloy: Energy Band Diagram & Info
  • Helena Wells
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Graduate Why Do We Need Alchemical Methods to Compute Gibbs Energy Changes?
  • MichaelWiteman
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Undergrad Fermi level change in semiconductors
  • Helena Wells
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Graduate Energy of valence electrons from period of the periodic table
  • Helena Wells
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Undergrad Electron angular momentum in diatomic molecules
  • kelly0303
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Undergrad What kx/ky Values Are Used for Graphene Band Structure Plots?
  • Boccard
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Undergrad Obtain the Density of State using the Green function
  • MahdiI84
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Undergrad Recombination and open-circuit voltage in solar cells
  • Mayan Fung
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Undergrad Understanding the AC Stark Shift Effect in Laser-Atom Interactions
  • kelly0303
  • · Replies 8 ·
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Graduate Why do Eu doped phosphors show fluorescence property without singlet?
  • pallab
  • · Replies 8 ·
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High School Collapse of a neutron star - strong nuclear force vs gravity
  • brajesh
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Undergrad Graphene - Armchair vs Zigzag - Semiconductor?
  • HenryA.
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High School Viewing IR radiation with cell phone cameras
  • hagopbul
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Graduate Problems with Landau Wang algorithm in fortran
  • IreneFerri
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Undergrad How do two photons affect Rabi oscillations in a 2-level atomic system?
  • kelly0303
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Undergrad Do electron orbitals ever change?
  • jactor
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Undergrad Spin orbit coupling/Filling order/Nucleus
  • em3ry
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High School Question about final k.e. of alpha and Polonium after decay of Radon
  • Glenn G
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Graduate Enthalpy of Evaporation at Zero Kelvin | Understanding Enthelpy Basics
  • Youssef Ellakany
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Undergrad Confused about Ramsey interferometry
  • kelly0303
  • · Replies 9 ·
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High School Are Subatomic particles a form of matter?
  • SHASHWAT PRATAP SING
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Graduate Crystallographic representation of a material, two sources seem very d
  • fluidistic
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Undergrad Van Laue Formulation: X-ray Diffraction from Crystal Structure
  • amjad-sh
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High School Volume of a solid at absolute zero
  • em3ry
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Undergrad The wave vector in 1st B.Z in Bloch theory
  • pallab
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High School Are energy bands in solid state timeless?
  • jake jot
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Undergrad Bands in strongly correlated materials
  • dRic2
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High School Why one substance does not pass through another substance？
  • obiscr
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Undergrad Semiclassical model of electron dynamics
  • Rzbs
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Graduate Green's function calculation of an infinite lattice with periodicity in 1D
  • paulhj
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Graduate Which condensed matter experiment PhD group is the most fun?
  • davidbenari
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High School How trapped ions can be used to make Atomic clocks?
  • Muthumanimaran
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Undergrad How Can LASER Be Both a Quantum and Classical Light Source?
  • Muthumanimaran
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Undergrad Electrostatic waves in a plasma
  • Getterdog
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High School What happens when you push a rod?
  • Lord Crc
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Undergrad 9 y.o. question: will a spoon of neutron star matter explode?
  • yapi
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Undergrad Why does a hydrogen gas tube produce a hydrogen atomic spectrum?
  • amilton
  • · Replies 9 ·
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Undergrad What is Diffusion Voltage in Semiconductor Heterojunctions?
  • Aliasa
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Graduate What is the charge neutral point?
  • skyhj105
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Undergrad Importance of the energy gap in electronic transport properties
  • Rzbs
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High School How can an atom have a negative charge?
  • erocored
  • · Replies 22 ·
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Undergrad Solid State Physics: Explaining Ashcroft & Mermin's Hall Effect
  • Rzbs
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Graduate What is the role of Berry curvature in solids according to Rev. Mod. Phys?
  • semc
  • · Replies 7 ·
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High School Reduced mass to atomic mass units conversion help please
  • TheCelt
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Graduate 3D Solid State Simulation Software
  • dasil12a
  • · Replies 3 ·
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Undergrad What happens to the temperature of a superconductor?
  • nithinyes
  • · Replies 6 ·
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Undergrad Hall Effect constant and Cyclotron frequency
  • Rzbs
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Undergrad Electron correlation vs electron exchange
  • Rzbs
  • · Replies 4 ·
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4
High School Notation for indexing a crystal direction
  • etotheipi
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Graduate What Are the Key Insights on Bragg/von Lau Scattering in X-Ray Experiments?
  • sterilemeep
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Undergrad Room Temp Super Conductor: Break Out the Champagne?
  • hutchphd
  • · Replies 4 ·
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Undergrad Why are the d and f orbitals in transition metals considered localized?
  • Rzbs
  • · Replies 2 ·
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Graduate Conductance of an interacting quasi one dimensional wire
  • qwertuiop
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High School Don't understand proof of Bloch theorem
  • etotheipi
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Undergrad How Does Finite Size Scaling Reveal Cluster Behavior in 1D Percolation?
  • Mikkel
  • · Replies 5 ·
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Undergrad Photons and wavelength in ultrafast optics
  • crashcat
  • · Replies 11 ·
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Undergrad Born-Oppenheimer approximations in molecules
  • kelly0303
  • · Replies 4 ·
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Graduate Taking all the electrons away from a real conductor
  • FortranMan
  • · Replies 2 ·
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High School Calculating the Total Energy of a lattice w/ the Madelung constant
  • etotheipi
  • · Replies 1 ·
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Graduate How are the thermal expansion of a solid and the stress tensor related?
  • cito93
  • · Replies 3 ·
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Undergrad Fermi level in a nonuniformly doped semiconductor
  • bubblewrap
  • · Replies 3 ·
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Undergrad Is Electron-Electron Interaction Stronger in Metals or Semiconductors?
  • Rzbs
  • · Replies 8 ·
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Undergrad Maxwell Boltzmann distribution
  • Rzbs
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Undergrad Electron scattering in the Brillouin zone boundary
  • Rzbs
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High School Hydrogen anions - how do they form?
  • sciFax
  • · Replies 21 ·
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High School What is Plasma? Is Tungsten Vapour a Gas or Plasma?
  • snorkack
  • · Replies 3 ·
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Graduate Generating rotons in superfluids
  • elad28
  • · Replies 3 ·
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Undergrad Can Theoretical Models Predict Direct Bandgap Materials for Solar Cells?
  • Mayan Fung
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Undergrad Electric field inside a Superconductor
  • dRic2
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Graduate Is Symmetry Breaking Occurring in Our Physical System Experiments?
  • TempleSweeper
  • · Replies 5 ·
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Undergrad Converting Unit Cell Volumes of Minerals to Density
  • oshah
  • · Replies 3 ·
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