Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Tuning MgB2 (0001) surface states through surface termination (CROSBI ID 173664)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Despoja, Vito ; Mowbray, Duncan J. ; Silkin, Vyacheslav Tuning MgB2 (0001) surface states through surface termination // Physical review. B, Condensed matter and materials physics, 84 (2011), 10; 104514-1-104514-11. doi: 10.1103/PhysRevB.84.104514

Podaci o odgovornosti

Despoja, Vito ; Mowbray, Duncan J. ; Silkin, Vyacheslav

engleski

Tuning MgB2 (0001) surface states through surface termination

Surface state localization and hybridization on B, Mg, and Li terminated MgB2 (0001) surfaces are studied within density functional theory (DFT). For the B terminated surface we find a low energy B σ1 surface state, a spz surface state, and B σ2 and σ3 quantum well states, which are 90% localized in the topmost B layer. Our results demonstrate that by charging the B atomic layer, either by changing the surface termination or through electro-chemical doping, the B σ surface states are shifted down in energy, filled, and delocalize through hybridization as they cross the bulk MgB2 bulk bands. On the other hand, the spz surface state should be shifted up in energy, emptied, and gain an increasingly metallic s character by adding a Mg, Mg+1 , or Li terminating atomic layer. These results clearly show both the robust nature of MgB2 (0001) surface states, and how their localization and energy range may be tuned by surface termination and charging, with implications for the superconducting and plasmonic behavior of MgB2 .

surface states; quantum-well states

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

84 (10)

2011.

104514-1-104514-11

objavljeno

1098-0121

10.1103/PhysRevB.84.104514

Povezanost rada

Fizika

Poveznice
Indeksiranost