91 citations
7 papers
Support varieties - an ideal approach
Aslak Bakke Buan, Henning Krause, Øyvind Solberg
We define support varieties in an axiomatic setting using the prime spectrum of a lattice of ideals. A key observation is the functoriality of the spectrum and that this functor ad…
Recent advances in exciton based quantum information processing in quantum dot nanostructures
H. J. Krenner, S. Stufler, M. Sabathil +6
Recent experimental developments in the field of semiconductor quantum dot spectroscopy will be discussed. First we report about single quantum dot exciton two-level systems and th…
Influence of copper on the electronic properties of amorphous chalcogenides
S. I. Simdyankin, M. Elstner, T. A. Niehaus +2
We have studied the influence of alloying copper with amorphous arsenic sulfide on the electronic properties of this material. In our computer-generated models, copper is found in…
The Auslander-Reiten formula for complexes of modules
Henning Krause, Jue Le
An Auslander-Reiten formula for complexes of modules is presented. This formula contains as a special case the classical Auslander Reiten formula. The Auslander-Reiten translate of…
A new type of charged defect in amorphous chalcogenides
S. I. Simdyankin, T. A. Niehaus, G. Natarajan +2
We report on density-functional-based tight-binding (DFTB) simulations of a series of amorphous arsenic sulfide models. In addition to the charged coordination defects previously p…
The stable derived category of a noetherian scheme
Henning Krause
For a noetherian scheme, we introduce its unbounded stable derived category. This leads to a recollement which reflects the passage from the bounded derived category of coherent sh…