49 citations · 131 across the 5 of their papers we have counts for
6 papers
Electron gas at the interface between two antiferromagnetic insulating manganites
M. J. Calderon, J. Salafranca, L. Brey
We study theoretically the magnetic and electric properties of the interface between two antiferromagnetic and insulating manganites: La0.5Ca0.5MnO3, a strong correlated insulator,…
Valley interference effects on a donor electron close to a Si/SiO2 interface
M. J. Calderon, Belita Koiller, S. Das Sarma
We analyze the effects of valley interference on the quantum control and manipulation of an electron bound to a donor close to a Si/SiO2 interface as a function of the valley-orbit…
Magnetoresistance in an all-manganite heterostructure
J. Salafranca, M. J. Calderon, L. Brey
We study the magnetic and transport properties of all-manganite heterostructures consisting of ferromagnetic metallic electrodes separated by an antiferromagnetic barrier. We find…
Reliability of the Heitler-London approach for the exchange coupling between electrons in semiconductor nanostructures
A. L. Saraiva, M. J. Calderon, Belita Koiller
We calculate the exchange coupling J between electrons in a double-well potential in a two-dimensional semiconductor environment within the Heitler-London (HL) approach. Two functi…
External field control of donor electron exchange at the Si/SiO2 interface
M. J. Calderon, Belita Koiller, S. Das Sarma
We analyze several important issues for the single- and two-qubit operations in Si quantum computer architectures involving P donors close to a SiO2 interface. For a single donor,…
Quasiparticle spectrum of grain boundaries in d-wave superconductors
M. J. Calderon, E. Bascones
A grain boundary which separates domains with different orientation along the c-axis is analyzed. The coupling of two parallel superconducting planes whose order parameters are rot…