Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2004     Display Documents



  history
ID: 192819.0, MPI für Festkörperforschung / FKF Publikationen 2004
A "flat/steep band" scenario in momentum space
Authors:Deng, S.; Simon, A.; Köhler, J.
Language:English
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Journal of Superconductivity
Volume:17
Start Page:227
End Page:231
Review Status:not specified
Audience:Not Specified
Abstract / Description:Based on chemical bonding considerations in a crystalline solid, a
Hamiltonian was proposed for the "flat/steep band" scenario. This model
has been studied with the first-principles method. With Hg and MgB2 as
examples, we have explained the characteristics of this model and
observed peak-like structure of the electron-phonon coupling constant
lambda(q) in q space. The strong coupling of the "flat band" electrons
with phonons has been corroborated by developing a new functional
Psib(Phi), through which we can quantitatively compare different
electronic states in coupling to a specific phonon. In the case of MgB2
a multigap structure of the superconducting state results from our
model.
Free Keywords:superconductivity; flat/steep band; mercury; magnesium diboride
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
Identifiers:ISI:000220413300011 [ID No:1]
ISSN:0896-1107 [ID No:2]
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.