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.
Threads
Graduate What resources are available for using DFT to study 1D materials in physics?
- Hamza Elkotfi
- · Replies 2 ·
Undergrad Radiative and Nonradiative Transitions
- fog37
- · Replies 3 ·
High School What are subatomic particles when they behave as waves or 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 Reduced matrix elements for Yb3+ 2F5/2→2F7/2 transition
- HAYAO
- · Replies 5 ·
Undergrad How do relative permittivity and permeability relate to refractive index in 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 How can we study invisible atoms?
- Semiconductor
- · Replies 7 ·
Undergrad Why does Kittel say 1D phonon density of states includes the factor of 2?
- 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 2p to 1s transition energies in hydrogen, deuterium and positronium
- 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 Does antiferromagnetism become ferrimagnetism in an external field?
- fluidistic
- · Replies 2 ·
Graduate How many bands does a solid have?
- howl
- · Replies 5 ·
Undergrad Why use powder in X-ray diffraction if crystals are randomly oriented
- Clara Chung
- · Replies 4 ·
Undergrad Why do metals reflect visible and UV light less than radio waves?
- harambe
- · Replies 7 ·
Graduate Conductivity and Integration over Fermi-Sphere?
- Abigale
- · Replies 2 ·
Undergrad Why do elements with similar atomic numbers have different states of matter?
- 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 Future directions in 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 Why is pure rotational spectrum seen as absorption and not emission?
- 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 Why does p-doped Ge have lower resistance in magnetic field?
- 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 Is a photon bouncing off an atom emission or reflection?
- 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 determines whether a material is a conductor or insulator?
- Fig Neutron
- · Replies 2 ·
Undergrad Free Vibrations of a linear triatomic molecule
- Ben Geoffrey
- · Replies 6 ·
Undergrad Did those researchers actually create negative mass?
- 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 How do magnetometers and SQUIDs measure magnetic properties?
- Myriam
- · Replies 4 ·
Graduate Laser beam represented with complex conjugate?
- betelgeuse91
- · Replies 2 ·