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 Experiment on the variation of weight with temperature
  • MartinG
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High School How Fast Do Different Atoms Vibrate?
  • Mikael17
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Graduate Information for nitrogen spectra lines
  • magic
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Undergrad Understanding Ewald's sphere in the context of X-Ray diffraction
  • Wrichik Basu
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3
Undergrad Why diode with larger band gap has larger onset potential?
  • prox777
  • · Replies 7 ·
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7
Undergrad On the necessary conditions to form the hydrogen molecule
  • DaTario
  • · Replies 33 ·
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Graduate Mode matching to an optical cavity
  • kelly0303
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Graduate DC Power supply for Optogalvanic Yb hollow cathode lamp
  • pallab
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Graduate Pairing of electrons in superconductors
  • StanislavD
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Graduate How to calculate the site energy corresponding to monomer with Gaussview 6?
  • Abdelhamid_Hi
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Graduate How does DFT handle degenerate eigenvectors?
  • Mart1234
  • · Replies 1 ·
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Undergrad Brownian motion and the resultant of forces
  • theegyptian
  • · Replies 22 ·
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Graduate How can I distinguish degeneracy from band structure?
  • Mohammad-gl
  • · Replies 6 ·
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Graduate What is the correct form of the Berry curvature formula?
  • Mohammad-gl
  • · Replies 7 ·
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7
Undergrad Effective Hamiltonian to Rotational Term Values
  • philhellenephysicist
  • · Replies 0 ·
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0
Graduate ABCD matrix formalism for real laser
  • kelly0303
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Graduate Calculating the interaction potential between 2 molecules
  • kelly0303
  • · Replies 3 ·
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Undergrad Superconductivity energy saved v Cooling/Heating energy loss
  • giodude
  • · Replies 4 ·
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4
Undergrad Praseodymium, other Elements, and their Magnetic Properties vs. radioactivity
  • walkeraj
  • · Replies 1 ·
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1
High School Is the Higgs Boson the Only Source of Mass?
  • bhobba
  • · Replies 3 ·
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3
Undergrad Atomic Structure: Why Does Energy Decrease with Orbit Number?
  • Aurelius120
  • · Replies 5 ·
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5
Graduate How does graphene Fermi velocity v_F link to the envelope propagation?
  • PRB147
  • · Replies 0 ·
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Graduate Thermal Properties of the Free Electron Gas: Fermi-Dirac Distribution
  • matteoargos
  • · Replies 1 ·
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1
High School Atom absorbing a photon and emitting a photon afterwards
  • wacki
  • · Replies 23 ·
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23
Undergrad Issues in understanding screening effects in the Jellium model
  • Matthew_
  • · Replies 0 ·
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0
Undergrad Uniform Translation of a Lattice
  • thatboi
  • · Replies 1 ·
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1
Undergrad Colloid complex refractive index from UV-vis spec
  • CheesyG
  • · Replies 1 ·
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1
Graduate The relation between ferromagnets, Phi4 and non-linear sigma model
  • Aethermimicus
  • · Replies 0 ·
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High School Why is my small Bi-2223 superconductor not levitating or locking above magnets?
  • Goliatbagge
  • · Replies 8 ·
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8
Undergrad Trying to understand the inner workings of a solar cell
  • Jman99
  • · Replies 2 ·
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2
Graduate Anisotropy of the effective masses in semiconductors
  • reterty
  • · Replies 2 ·
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2
Graduate ##\Lambda##-enhanced gray molasses cooling
  • BillKet
  • · Replies 0 ·
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0
Undergrad Two-body correlation function computation
  • ab_kein
  • · Replies 1 ·
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1
Graduate Yes, there is a typo. The correct electronic configuration for Yb+ is 4f146s.
  • kelly0303
  • · Replies 1 ·
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1
Graduate Derivation of Generalized Khon-Sham Scheme
  • Mart1234
  • · Replies 0 ·
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0
Undergrad Why do GaN based LEDs continue to function despite a high number of defects?
  • TONGSU
  • · Replies 6 ·
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6
Undergrad Conservation of linear momentum in RH relations
  • GeologistInDisguise
  • · Replies 7 ·
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7
Undergrad Questions Regarding Primitive Unit Cell
  • Slimy0233
  • · Replies 4 ·
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4
Undergrad Microscope with which atoms can be seen
  • ForumMember
  • · Replies 6 ·
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6
Graduate K-point mesh and Monkhorst-Pack
  • ramana3797
  • · Replies 1 ·
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1
Graduate Magnetic exchange interaction by first principle (Blume-Capel model)
  • UFSJ
  • · Replies 1 ·
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1
Graduate Decay of supercurrents connected to non-superconducting zones?
  • StanislavD
  • · Replies 0 ·
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0
Graduate Symmetry breaking in the AdS small/large black hole phase transition
  • codebpr
  • · Replies 5 ·
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5
Undergrad Melting point of graphite and diamond?
  • Warp
  • · Replies 3 ·
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3
Graduate Carrier relaxation within a quantum well
  • BPHH85
  • · Replies 4 ·
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4
Undergrad AC Stark shift in a 3 level system
  • BillKet
  • · Replies 0 ·
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0
Undergrad Why do only low-pressure gases emit a line spectrum?
  • Jason Ko
  • · Replies 6 ·
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6
Graduate Deriving the perturbative expansion from Hubbard to Heisenberg
  • hokhani
  • · Replies 0 ·
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0
Undergrad Question about Radiationless De-Excitation
  • Kavi
  • · Replies 6 ·
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6
Graduate Monte Carlo Wang-Landau_antiferromagnetic perovskite
  • UFSJ
  • · Replies 3 ·
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3
Undergrad The dispersion interaction and Casimir effect
  • Spathi
  • · Replies 10 ·
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10
High School Can anyone explain the zero bias dark current observations in this paper?
  • Devin-M
  • · Replies 5 ·
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Graduate SiC Vertical MOSFET channel length modulation
  • bonkgeek
  • · Replies 2 ·
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Graduate Investigating the dielectric constant of a pure polar liquid
  • Dam7
  • · Replies 0 ·
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Undergrad How to get plot (optical gain of GaAs)?
  • yeyintkoko
  • · Replies 1 ·
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1
High School New Theory Explaining Why Certain Alloys don't change size when heated
  • jedishrfu
  • · Replies 1 ·
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Undergrad A question on elasticity from Kittel's Solid State Physics book
  • hagopbul
  • · Replies 11 ·
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11
High School Why don't electrons leave a metal surface?
  • jklfabc
  • · Replies 28 ·
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28
Graduate How do I calculate the rate constant units for excitation by electron impact?
  • K-Manu
  • · Replies 1 ·
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1
Undergrad Pair interaction potential with more than one mininum?
  • hilbert2
  • · Replies 4 ·
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4
Graduate Convert .cif to quantum espresso input
  • Mohammad-gl
  • · Replies 0 ·
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0
Undergrad Absorption cross section of light in air
  • Big Bird
  • · Replies 3 ·
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3
Undergrad What Determines the Use of Normal vs Angular Frequency in Quantum Transitions?
  • kelly0303
  • · Replies 10 ·
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Undergrad Injection radius in a Penning trap
  • Malamala
  • · Replies 1 ·
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1
Graduate Technical question about AMO experiment in a paper
  • BillKet
  • · Replies 7 ·
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7
Undergrad Why is K an anti-unitary operator in (26)?
  • thatboi
  • · Replies 1 ·
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1
Undergrad Does heating weaken the strong nuclear/electromagnetic forces
  • RobbyQ
  • · Replies 3 ·
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High School Is it possible to ionise a solid, so that it has no electrons left?
  • Josiah
  • · Replies 3 ·
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Graduate Question about power broadening
  • kelly0303
  • · Replies 0 ·
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Graduate Characterizing Electron Beam w/ CMOS-Camera or Faraday Cup
  • Philip Koeck
  • · Replies 19 ·
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19
Undergrad Power functional theory (PFT) vs traditional Dynamic DFT
  • Astronuc
  • · Replies 0 ·
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Graduate Broad linewidth continuous wave laser
  • BillKet
  • · Replies 4 ·
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4
Graduate From two-body Green's function to one-body in perturbation theory
  • forever_physicist
  • · Replies 1 ·
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Graduate Spectrum analyzer for cavity locking
  • kelly0303
  • · Replies 2 ·
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2
Undergrad Colorless Compounds and electromagnetic radiation
  • pisluca99
  • · Replies 19 ·
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19
Undergrad Interpretation of temperature in liquids/solids
  • dextercioby
  • · Replies 83 ·
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Undergrad Are All Periodic Lattice Arrangements Bravais Lattices?
  • Slimy0233
  • · Replies 2 ·
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Undergrad Covalent Bonds -- Which type of force?
  • ruivocanadense
  • · Replies 8 ·
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8
Graduate Differential cross section, double differential cross section, triple...
  • qnach
  • · Replies 1 ·
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Graduate Confused about reflected signal in a bow-tie optical cavity
  • Malamala
  • · Replies 5 ·
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5
Graduate LCAO graphene orbitals wave functions
  • jjakovac
  • · Replies 1 ·
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1
Undergrad How is Lorenz-Lorentz relationship possible?
  • snorkack
  • · Replies 3 ·
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3
Undergrad Laser linewidth in a STIRAP process
  • Malamala
  • · Replies 1 ·
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1
Undergrad The missing factor of 2π in reciprocal lattice calculations
  • Wrichik Basu
  • · Replies 4 ·
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4
Graduate Looking for a paper describing the Raman effect
  • TthePhysicist
  • · Replies 1 ·
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1
Graduate Two level system in a thermal noise electric field
  • kelly0303
  • · Replies 1 ·
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Graduate Can we have molecular transitions that change multiplicity?
  • BillKet
  • · Replies 1 ·
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1
Graduate What is the meaning of the (A x B) when talking about CDWs?
  • kevmeister
  • · Replies 3 ·
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3
Graduate Determination of electron temperature in an ion source
  • HeavyIon
  • · Replies 0 ·
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0
Graduate Can I calculate partial density of states using tight binding?
  • Mohammad-gl
  • · Replies 0 ·
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0
Graduate Bipolar transport in a simple illuminated semiconductor bar
  • zhanghe
  • · Replies 7 ·
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7
High School What does this distance of an atom mean?
  • Lotto
  • · Replies 7 ·
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7
Graduate Empirical tight-binding sp3s* band structure of semiconductors
  • rogdal
  • · Replies 2 ·
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Graduate How can I use a fiber EOM to lock a laser with a large input power?
  • BillKet
  • · Replies 4 ·
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4
Graduate Phonon Density of States (PDOS) at Gamma Point
  • RaquelYR
  • · Replies 1 ·
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Graduate Confused about population transfer
  • Malamala
  • · Replies 17 ·
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17
Graduate Learning about other experimental areas of physics
  • BillKet
  • · Replies 1 ·
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Graduate Nuclear moments in molecular spectroscopy
  • Malamala
  • · Replies 19 ·
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19
Graduate Extracting the uncertainty on a measured atomic transition
  • Malamala
  • · Replies 4 ·
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4
Undergrad Understanding Diffraction Condition in Kittle's Intro to Solid State Physics
  • Mart1234
  • · Replies 1 ·
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1