Zobrazeno 1 - 10
of 23
pro vyhledávání: '"He-Bi Sun"'
Publikováno v:
Physics Letters A. 319:367-372
Using the quantum tunneling theory, we investigate the spin-dependent transport properties of the ferromagnetic metal/Schottky barrier/semiconductor heterojunction under the influence of an external electric field. It is shown that increasing the ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fd830a524900e612abcd9586288dc49
https://doi.org/10.1016/j.physleta.2003.09.076
https://doi.org/10.1016/j.physleta.2003.09.076
Publikováno v:
Journal of Physics: Condensed Matter. 15:8055-8064
We propose a model for non-ideal monitoring of the state of a coupled quantum dot qubit by a quantum tunnelling device. The non-ideality is modelled using an equivalent measurement circuit. This allows realistically available measurement results to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c79453b89004348741691f63c16b2f98
https://doi.org/10.1088/0953-8984/15/46/020
https://doi.org/10.1088/0953-8984/15/46/020
Publikováno v:
Journal of Physics: Condensed Matter. 15:4841-4850
Within the ballistic transport picture, we have investigated the spin-polarized transport properties of a ferromagnetic metal/two-dimensional semiconductor (FM/SM) hybrid junction and an FM/FM/SM structure using quantum tunnelling theory. Our calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fd4e11b92c54cc3787d483f0d535c7f
https://doi.org/10.1088/0953-8984/15/27/315
https://doi.org/10.1088/0953-8984/15/27/315
Autor:
Gerard J. Milburn, He-Bi Sun
Publikováno v:
physica status solidi (c). :1301-1304
We apply a quantum master equation approach to coupled quantum dot systems that involve inelastic transitions between the dots. The Hamiltonian we use to model the inelastic interaction between electrons and the phonon bath differs from those of othe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::219a68b740e1b345d00af9f56620065d
https://doi.org/10.1002/pssc.200303075
https://doi.org/10.1002/pssc.200303075
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 12:403-406
We study the quantum dynamics of the emission of multimodal polarized light in light emitting devices (LED) due to spin polarized carriers injection. We present the equations for photon number and carrier numbers, and calculate the polarisation degre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37b170dc2ee9e7fa4c57e075bc7b18bb
https://doi.org/10.1016/s1386-9477(01)00312-5
https://doi.org/10.1016/s1386-9477(01)00312-5
Autor:
He Bi Sun, Wayne M. Solomon
Publikováno v:
Fluctuation and Noise Letters. :L227-L232
We apply the quantum trajectory method to current noise in resonant tunneling devices. The results from dynamical simulation are compared with those from unconditional master equation approach. We show that the stochastic Schrödinger equation approa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a94d211c792c16310537bdd69939302e
https://doi.org/10.1142/s0219477501000470
https://doi.org/10.1142/s0219477501000470
Autor:
Gerard J. Milburn, He-Bi Sun
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 6:664-667
We use a quantum master equation to describe transport in double-dot devices. The coherent dot-to-dot coupling affects the noise spectra strongly. For phonon-assisted tunneling, the calculated current spectra are consistent with those of experiments.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e492c6122a40238683b553d6f3f8f14
https://doi.org/10.1016/s1386-9477(99)00147-2
https://doi.org/10.1016/s1386-9477(99)00147-2
Autor:
He Bi Sun, Gerard J. Milburn
Publikováno v:
Physical Review B. 59:10748-10756
A quantum Markovian master equation is derived to describe the current noise in resonant tunnelling devices. This equation includes both incoherent and coherent quantum tunnelling processes. We show how to obtain the population master equation by adi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be1ca73bad04f431e25703a4ce15f3ce
https://doi.org/10.1103/physrevb.59.10748
https://doi.org/10.1103/physrevb.59.10748
Autor:
Gerard J. Milburn, He Bi Sun
Publikováno v:
Superlattices and Microstructures. 23:883-891
A new theoretical approach to current noise in resonant tunnelling is proposed and applied to various resonant tunnelling structures. The results show the noise reduction resulting from the correlation due to the Pauli principle, and are consistent w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b117e3a54f5b7e7fa5a35eddf84c8408
https://doi.org/10.1006/spmi.1997.0549
https://doi.org/10.1006/spmi.1997.0549
Autor:
He Bi Sun, Gerard J. Milburn
Publikováno v:
Contemporary Physics. 39:67-79
We review the description of noise in electronic circuits in terms of electron transport. The Poisson process is used as a unifying principle. In recent years, much attention has been given to current noise in light-emitting diodes and laser diodes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f63329b1c81f13736d4488f22786771f
https://doi.org/10.1080/001075198182143
https://doi.org/10.1080/001075198182143