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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Undergrad Radiative and Nonradiative Transitions
- fog37
- · Replies 3 ·
High School The Nature of Reality: Understanding the Behavior of Subatomic Particles
- Kenneth Boon Faker
- · Replies 22 ·
Graduate Charge density of carbon nanotubes and graphene
- Nod
- · Replies 3 ·
Graduate Bloch theorem proof with V(x)=V(x+ma)
- Philethan
- · Replies 5 ·
Graduate Band diagram, conductivity tensor
- Juanchotutata
- · Replies 3 ·
Graduate Why do we need to know "two-bands" Hall coefficient and magn
- Philethan
- · Replies 2 ·
Undergrad List of hyperfine structure of the elements?
- Admiller
- · Replies 4 ·
Graduate Is Block Spin Still ±1 in Ising Model?
- howl
- · Replies 3 ·
Undergrad What are the applications of YBCO bulks?
- DariusP
- · Replies 1 ·
Undergrad How much does it cost to synthesize YBCO?
- DariusP
- · Replies 17 ·
Graduate Question about energy transfer between Rare-Earth ions
- HAYAO
- · Replies 5 ·
Undergrad Relative Permitivity, Permeability & Refractive Index of Water
- Bikash Kumar Das
- · Replies 5 ·
Undergrad What should be continuous at the interface of two materials?
- Dor
- · Replies 8 ·
Undergrad Do electrons have a net motion when a DC voltage is applied?
- fluidistic
- · Replies 7 ·
Undergrad What is zero and infinite effective mass?
- anahita
- · Replies 5 ·
Graduate Do wave-packets of Blochwaves spread over time?
- Abigale
- · Replies 6 ·
Undergrad Flux pinning in type 2 superconducotrs
- DariusP
- · Replies 6 ·
Graduate Criticality, phase transitions and closing bandgap
- thephystudent
- · Replies 6 ·
Undergrad Emission lines and absorption lines
- Sweetyme123
- · Replies 2 ·
Graduate What is Mott Transition and its basic Priniciple?
- Sagar Rawal
- · Replies 8 ·
High School Unveiling the Mystery of Invisible Atoms
- Semiconductor
- · Replies 7 ·
Undergrad Density of States: 1-Dim Linear Phonons & Electrons Differences
- cozycoz
- · Replies 4 ·
Graduate Time reversal symmetry and Bloch states
- Joker93
- · Replies 1 ·
High School Why is an electric arc needed for spectroscopy of clear gases?
- Sophrosyne
- · Replies 4 ·
Undergrad Calculating Transition Energies from 2p to 1s: Need Help with Formula?
- HastiM
- · Replies 2 ·
Graduate Why is ##\omega_c \tau >>1## for several revolutions?
- Abigale
- · Replies 2 ·
Undergrad Dimensions of Angular and Radial Nodes
- sams
- · Replies 3 ·
Undergrad Heavy/Light Holes, what of Electrons?
- jeffbarrington
- · Replies 5 ·
Undergrad A question about antiferromagnetism in an external B field
- fluidistic
- · Replies 2 ·
Graduate How many bands does a solid have?
- howl
- · Replies 5 ·
Undergrad Question about Powder X-ray diffraction experiment
- Clara Chung
- · Replies 4 ·
Undergrad How Do Metals Reflect Light Across Different Frequencies?
- harambe
- · Replies 7 ·
Graduate Conductivity and Integration over Fermi-Sphere?
- Abigale
- · Replies 2 ·
Undergrad Nature of matter: state question
- Ferrum
- · Replies 7 ·
Graduate How does parity transformation affect Bloch states?
- Joker93
- · Replies 1 ·
Undergrad New result in high temp superconductivity
- PAllen
- · Replies 4 ·
Graduate The Future of "Soft Matter Physics"
- AD MCFC
- · Replies 5 ·
Undergrad Non-contact methods for measuring voltage in conductive materials
- fluidistic
- · Replies 7 ·
Undergrad Drift velocity in P-N Junctions
- nickhobbs
- · Replies 3 ·
Undergrad Is there a crystal angular momentum?
- fluidistic
- · Replies 1 ·
Undergrad Atomic Layers calculation in Feynman lectures
- Aleoa
- · Replies 5 ·
Undergrad Why can't there be a 2-level laser with Non-Optical Pumping
- Q.B.
- · Replies 6 ·
Undergrad Rotational Spectra: Why Absorption & Not Emission Lines?
- koustav
- · Replies 2 ·
Undergrad Valence band and Fermi level difference?
- nickhobbs
- · Replies 4 ·
Graduate Recovering Wavefunction in Periodic Ab Initio Calculations
- bsmile
- · Replies 7 ·
High School How the atom was proven to exist?
- mheruian
- · Replies 2 ·
Graduate Is there a model for ionization of N2 in air under an electric field?
- ccrook
- · Replies 3 ·
High School Superfluid Helium and its use at CERN
- Jimmy87
- · Replies 17 ·
Undergrad Fermi-Dirac distribution, when does it break?
- Telemachus
- · Replies 6 ·
Graduate How Does Spin-Dependent Chemical Potential Generate a Spin Current?
- amjad-sh
- · Replies 1 ·
Undergrad Why don't absorption and emission spectra "cancel out"?
- marksyncm
- · Replies 8 ·
High School Coloured beam in a discharge tube
- shivanshu
- · Replies 7 ·
Graduate Scattering states at presence of interface with strong SOC
- amjad-sh
- · Replies 1 ·
Undergrad Boltzmann Distribution: Feynman's treatment of p-n junction
- strauser
- · Replies 4 ·
Graduate What Other Symmetries Exist in Superfluids?
- Superfluid universe
- · Replies 6 ·
Undergrad What Caused the Lower Resistance in the Second Graph?
- MementoMori96
- · Replies 2 ·
Graduate Spin-orbit coupling at the interface between two metals
- amjad-sh
- · Replies 3 ·
Undergrad Is Ohm's Law Applicable to Semiconductors in a Magnetic Field?
- MementoMori96
- · Replies 2 ·
Graduate What is inversion symmetry in solids and why does it break at the surface?
- amjad-sh
- · Replies 1 ·
Undergrad How is this formula for the speed of sound derived?
- Superfluid universe
- · Replies 3 ·
Graduate Elastically anisotropic sphere under pressure
- camilo
- · Replies 9 ·
Graduate Plotting Band Structure in Graphene for Scientists
- barana
- · Replies 17 ·
Graduate New Material Created Known As 'Kagome Metal'
- Greg Bernhardt
- · Replies 0 ·
Undergrad Resistance and magnetic field effects for p-doped Ge
- MementoMori96
- · Replies 9 ·
Graduate Interface states in a PIN diode
- Bruce_the_physicist
- · Replies 1 ·
Undergrad Mean speed of electrons in a periodic potential / lattice
- fluidistic
- · Replies 3 ·
Undergrad Understanding solar cell band diagram
- Hamidreza
- · Replies 3 ·
Undergrad How do I show a skeptic that atoms/molecules actually exist?
- Michael Scott
- · Replies 97 ·
Graduate What Other Phenomena Involve Nuclear Excitations Coupling with Lattice Phonons?
- charlesmartin14
- · Replies 1 ·
Undergrad Density of States -- alternative derivation
- Alex Cros
- · Replies 5 ·
Graduate The Hamiltonian of the XY model -- when is it called the XX model?
- LagrangeEuler
- · Replies 1 ·
Undergrad Soft Question: Possible Applications of Rydberg Polarons?
- Cuindless
- · Replies 2 ·
Undergrad Width of one electron shell of a hydrogen atom
- devan
- · Replies 4 ·
Undergrad Is the total Spin operator a vector
- BigDig123
- · Replies 5 ·
Graduate Dyson's equation and Green's functions
- Yiheng Xu
- · Replies 1 ·
Undergrad Flux pinning effect and hysteresis loop
- Mayan Fung
- · Replies 1 ·
Graduate Topological Phases: Understanding Kitaev's Paper
- shiraz
- · Replies 1 ·
Undergrad What is the significance of the Ground State Lamb Shift in modern physics?
- neilparker62
- · Replies 0 ·
Undergrad ABC model for GaAs infrared LED
- Hello890
- · Replies 1 ·
Undergrad Only certain emission lines show up in absorption spectrum
- eprparadox
- · Replies 4 ·
Undergrad Feshbach resonance: ELI5 or resources for undergraduate
- bt623
- · Replies 1 ·
Undergrad What Limits the Number of Bravais Lattices to Just 14?
- Sahar ali
- · Replies 1 ·
Graduate Reflection or emission of a photon
- Papatom
- · Replies 2 ·
Undergrad Photon BEC: Hypothetical Universe End-State
- Cory Buott
- · Replies 2 ·
Graduate Change in phonon dispersion with pressure
- elysia
- · Replies 1 ·
Undergrad Identification of index of Bragg peaks for NaCl
- Hello890
- · Replies 7 ·
Undergrad How to index single crystal Bragg peaks
- Hello890
- · Replies 3 ·
High School Practical use of Bose-Einstein condensate?
- Bishop85
- · Replies 7 ·
Graduate Derivation in Ashcroft and Mermin (The Pseudopotential)
- MathematicalPhysicist
- · Replies 11 ·
Graduate Physical meaning of terms in the Qi, Wu, Zhang model
- Joker93
- · Replies 3 ·
High School What makes a material an insulator?
- Fig Neutron
- · Replies 2 ·
Undergrad Free Vibrations of a linear triatomic molecule
- Ben Geoffrey
- · Replies 6 ·
Undergrad Is Negative Mass a Reality or Just a Scientific Analogy?
- bbbl67
- · Replies 16 ·
Undergrad Metallic hydrogen created in the lab
- Auto-Didact
- · Replies 29 ·
Undergrad Calculate the distance between two cleaved crystals
- Jay Macarus
- · Replies 6 ·
Undergrad Where does the name of XY model come from?
- Demystifier
- · Replies 1 ·
Graduate How to calculate the degeneracy of an energy band?
- howl
- · Replies 3 ·
Undergrad Understanding Magnetometer & SQUID Property Measurement Systems
- Myriam
- · Replies 4 ·
Graduate Laser beam represented with complex conjugate?
- betelgeuse91
- · Replies 2 ·
Undergrad Examples of atoms that have more than 8 electrons in shell
- MatsNorway
- · Replies 3 ·