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 A question about antiferromagnetism in an external B field
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Undergrad Question about Powder X-ray diffraction experiment
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Undergrad How Do Metals Reflect Light Across Different Frequencies?
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Undergrad Nature of matter: state question
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Undergrad New result in high temp superconductivity
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Undergrad Non-contact methods for measuring voltage in conductive materials
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Undergrad Drift velocity in P-N Junctions
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Undergrad Is there a crystal angular momentum?
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Undergrad Atomic Layers calculation in Feynman lectures
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Undergrad Why can't there be a 2-level laser with Non-Optical Pumping
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Undergrad Rotational Spectra: Why Absorption & Not Emission Lines?
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Undergrad Valence band and Fermi level difference?
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Undergrad Fermi-Dirac distribution, when does it break?
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Undergrad Why don't absorption and emission spectra "cancel out"?
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Undergrad Boltzmann Distribution: Feynman's treatment of p-n junction
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Undergrad What Caused the Lower Resistance in the Second Graph?
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Undergrad Is Ohm's Law Applicable to Semiconductors in a Magnetic Field?
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Undergrad How is this formula for the speed of sound derived?
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Undergrad Resistance and magnetic field effects for p-doped Ge
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Undergrad Mean speed of electrons in a periodic potential / lattice
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Undergrad Understanding solar cell band diagram
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Undergrad How do I show a skeptic that atoms/molecules actually exist?
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Undergrad Density of States -- alternative derivation
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Undergrad Soft Question: Possible Applications of Rydberg Polarons?
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Undergrad Width of one electron shell of a hydrogen atom
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Undergrad Is the total Spin operator a vector
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Undergrad Flux pinning effect and hysteresis loop
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Undergrad What is the significance of the Ground State Lamb Shift in modern physics?
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Undergrad ABC model for GaAs infrared LED
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Undergrad Only certain emission lines show up in absorption spectrum
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Undergrad Feshbach resonance: ELI5 or resources for undergraduate
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Undergrad What Limits the Number of Bravais Lattices to Just 14?
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Undergrad Photon BEC: Hypothetical Universe End-State
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Undergrad Identification of index of Bragg peaks for NaCl
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Undergrad How to index single crystal Bragg peaks
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Undergrad Free Vibrations of a linear triatomic molecule
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Undergrad Is Negative Mass a Reality or Just a Scientific Analogy?
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Undergrad Metallic hydrogen created in the lab
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Undergrad Calculate the distance between two cleaved crystals
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Undergrad Where does the name of XY model come from?
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Undergrad Understanding Magnetometer & SQUID Property Measurement Systems
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Undergrad Examples of atoms that have more than 8 electrons in shell
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Undergrad How do I make an atomic oscillation?
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Undergrad Density Functional Theory and pseudopotentials
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Undergrad Hydrogen plasma compression with liquid Mercury piston
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Undergrad Superinsulators: How Do They Achieve Infinite Resistivity on an Atomic Level?
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Undergrad Atomic Radii Table | Element & Isotope Charge Radius
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Undergrad What is an optically active electron?
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Undergrad Laue Diffraction Intensity Distribution
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Undergrad GPS and Cs atomic clock question
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Undergrad What Are the Best Resources to Understand Resonant Tunneling Diodes?
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Undergrad Regarding the precision and accuracy of Atomic mass
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Undergrad Rotational Spectra: ΔJ Selection Rule & Emission Part
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Undergrad Relationship between the depletion region and the band gap of a diode?
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Undergrad P & Q branches confusion in rovibrational transitions + rant
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Undergrad What Determines the Breakability of Sulfur Clumps at the Atomic Level?
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Undergrad Detectable interference between counter-propagating modes
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Undergrad Can Higher Beam Energies Revolutionize Semiconductor Doping Techniques?
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Undergrad How Does Weiss Molecular Field Theory Model Magnetization Symmetry?
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Undergrad Understanding AC and Optical Conductivity: Conflicting Information Clarified
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Undergrad Mass of Holes: Measuring Physically
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Undergrad Is There an Analogous Law for X-ray Diffraction Minima?
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Undergrad Understanding the Born-Oppenheimer Approximation: A Mathematical Proof
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Undergrad How to simulate a lattice with boundary conditions?
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Undergrad Why is the parabolic shape of holes broader than that of electrons?
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Undergrad Cyclotron resonance and Landau Levels
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Undergrad Help with Hohenberg-Kohn Theorem
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Undergrad Difference between binding energy and ionization energy
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Undergrad Why isn't the depletion layer width equal in the p and n
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Undergrad How can I obtain the reciprocal lattice of graphene?
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Undergrad Derivation of the atomic nucleus formula
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Undergrad How Does Rubidium's Electron Spin Affect Its Energy Levels?
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Undergrad Band theory and qualitative character of bands
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Undergrad Is it theoretically possible to measure polariton mass?
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Undergrad Miller indices for hexagonal crystal systems
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Undergrad Delay in normal-to-Meissner state
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Undergrad Why is gold heavier than lead?
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Undergrad Does the electron generated by the donor have no role?
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Undergrad Why is the absorption depth for GaAs more than for Germanium?
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Undergrad What is the main role of doping in a solar cell?
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Undergrad Longitudinal resistivity in Integer Quantum Hall Effect
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Undergrad What is the origin of Van der Waals force?
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Undergrad Why are core electrons ejected by gammas
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Undergrad Why does low surface energy imply hydrophobicity?
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Undergrad High Resolution X-Ray Diffraction: Explained
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Undergrad How Does Bragg's Diffraction Apply to FCC Lattices?
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Undergrad 2 basis sets, for which one is DFT calc faster?
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Undergrad First excited state of Helium. Triplets and Singlet
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Undergrad Plasma self-focusing index of refraction < 1?
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Undergrad Can we consider strained crystals as periodic crystals in theory and practice?
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Undergrad Superconductors and the Meissner effect
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Undergrad Why uranium glass glows green if it's under UV light?
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Undergrad How to use the momentum matrix of the reduced k-points
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Undergrad What is saturation magnetization
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Undergrad Scale invariant thermal fluctuations
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Undergrad Filament for thermionic emission in open air
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Undergrad Physical Dimensions of electron shells
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Undergrad How does Aluminum conduct electricity despite its non-conductive oxide layer?
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Undergrad Xray NanoDiffraction of Si and SiGe
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Undergrad Coherent X-ray Diffraction Imaging Explained
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