Condensed Matter  

In General, Structure > s.a. history of physics; phase transition; technology.
* Idea: Condensed-matter physics studies macroscopic matter with strong interactions among constituent parts; The most common forms of condensed phases are solids and liquids, but granular solids are now recognized by scientists as a different state of matter.
*
2D: Electron gases in the quantum Hall effect; Planar sprinklings of atoms at the surface of a superfluid have been studied; 1998, 2D atom gas [@ Gauck et al PRL(98) + pn(98)dec].
@ General references: Cohen PRL(08) [history].
@ Books: Weinberg 83 [I]; Krieger 96 [modeling matter]; Chaikin & Lubensky 00; Marder 00 [r PT(01)jun]; Taylor & Heinonen 02 [r PT(03)may]; de Gennes 03; March & Angilella 09 [molecules, clusters]; Sander 09 [advanced]; > s.a. group theory; quantum field theory and effective theories.
@ Related topics: Bach et al LMP(95) [N electrons in molecule, with radiation]; Hartnoll CQG(09)-ln [holographic methods].
> Related topics: see Luttinger Liquid [1D]; Phonon.

Gaseous and Liquid Matter > s.a. atomic physics; Extended Objects; fluid; Foam; Rayleigh Jets; statistical mechanics; Superfluids; Water.
* Solution: Molecule-sized particles are completely dissolved in a solvent, binding with it chemically.
* Colloid: Intermediate between solution and suspension, colloidal particles are about 10–6 cm in diameter.
* Suspension: Large particles float in a liquid medium, and would settle out if allowed to rest.
* Result: Liquids with expansive freezing resist turning into viscous solid-like configurations when squeezed.
@ Liquids: issue PW(96)apr; Granick PT(99)jul, Taylor pw(02)feb [lubricants]; Maris & Balibar PT(00)feb [negative p and cavitation]; Jagla PRL(02) [expansive freezing and viscosity]; March & Tosi 02; Dorbolo et al NJP(03) + pw(04)jan [antibubbles]; Plazanet et al JCP(04) + pw(04)sep [liquid that freezes when heated]; news pn(07)nov [spherical glass beads as zero-surface-tension liquids]; Cardoso Phy(08) [shapes of liquid drops]; Cavagna PRP(09) [supercooled]; Craster & Matar RMP(09) [thin films, dynamics and stability]; > s.a. helium [thermodynamics]; liquid crystals; non-equilibrium statistical mechanics.
@ Interfaces: Vella & Mahadevan AJP(05)sep [floating clumps and the cheerios effect]; Bonn et al RMP(09) [wetting and spreading].

Solid Matter > s.a. crystals; Disordered Systems; Extended Objects; matter [including food]; molecular physics; Order; superconductivity.
* Idea: The field studies materials, but it has also taken on a more and more active role, by manufacturing new materials with desired combinations of properties such as thermal and electric conductivity, density, etc.
* Molecular solids: Molecules rather than atoms make up the lattice; Examples are cubane C8H8, and solid C60.
* Metals: Studies of Hg clusters shows that the transition to metallic behavior occurs in the 20–70 atom range.
* Tensile strength: Spider silk has higher tensile strength than steel.
* Glass: Regular glass is made with molten sand, limestone, and soda ash; In general, some liquids become glassy and others ordered when colled, the result depending to a large extent on the colling process, and also on the "fragility" of the liquid, m:= /(Tg/T)|T = T_g, where is viscosity, related to Poisson's ratio of bulk to shear modulus.
* Pyrex: Much stronger glass, made by adding boron silicate; Discovered in the 1880s, later marketed by Corning.
* Supersolid: A solid material with the characteristics of a superfluid; Observation first announced in 2004 for ultracold 4He [@ PSU press release], in which a small fraction decouples from the rest of the solid and flows effortlessly through the material as if it were not there; First predicted in 1969 by Russian theorists Alexander Andreev and Ilya Liftshitz; 2007, Behavior is strongly dependent on the amount of crystal disorder in the sample; Simulations indicate it is due to screw dislocations; Mounting evidence from phase transition signature in specific heat.
@ Texts: Peierls 74; Ashcroft & Mermin 76; Harrison 80, 99 [e structure]; Anderson 84; Blakemore 85; Rosenberg 88; Kittel 95; Mihály & Martin 96 [problems]; Anderson 97 [lectures]; Phillips 03 [advanced, r PT(03)jun]; Kantorovich 04 [quantum]; Duan & Guojun 05.
@ Amorphous solids: Zallen 98; Alexander PRP(98); Binder & Kob 05 [statistical mechanics].
@ Glass: Angell Sci(95)mar [fragility of liquids]; Zanotto AJP(98)may, Zanotto & Gupta AJP(99)mar [(non)flowing]; Ellis 98; Leuzzi & Nieuwenhuizen 07 [thermodynamics, r JSP(08)dec]; Binder & Kob 08 [statistical mechanics]; > s.a. phase transitions.
@ Wires: Snijders et al PRL(06) + pn(06)feb [atom wires].
@ Negative thermal expansion: Zirconium Tungstate ZrW2O8, Mary et al Sci(96)apr; news livesci(04)dec.
@ Supersolid: news pw(04)jan; Kim & Chan Sci(04) + pw(04)aug [supersolid 4He]; Rittner & Reppy PRL(06) + Todoshchenko et al PRL(06) + pw(06)nov [controversy]; Chalmers pw(07)may [rev]; news pw(07)may [role of disorder]; Diallo et al PRL(07) + pw(07)may [doubts]; Clark et al a0706 + pw(07)jun [does not require superfluid grain boundaries]; Boninsegni et al PRL(07) + pw(07)jul [screw dislocations]; news pw(07)oct [evidence]; Biroli et al PRB(08) + Nussinov Phy(08) [superglass].
@ Related topics: Berenbaum ThSc(95)sep [spider silk]; Collier et al Sci(97)sep [metal/insulator switching]; Brack SA(97)dec [metal clusters]; Büttiker & Thomas SM(98)qp/97 [evanescent media]; Barnett & Madan pw(98)jan [superhard lattices]; Gay & Leibler PRL(99), PT(99)nov [sticky materials]; Eberhart SA(99)oct [breaking vs bending]; Heiselberg & Hjorth-Jensen PRP(00) [phases in neutron stars]; Polturak & Gov CP(03) [quantum solids]; Kotliar & Vollhardt PT(04)mar [strongly correlated materials].
> Related topics: see Bose-Einstein Condensation; Defects; Elasticity; Ice; specific heat; Transport.

Other Levels of Structure > see atomic; matter [including stability]; meta-materials; nuclear; particle physics.

"God made solids, but surfaces are the work of the devil" – W Pauli


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