Quantum Monte Carlo studies on excitonic complexes and excitonic strings
in type-II superlattices
(1998‐)
Spatial configurations of electrons and holes of excitonic complexes in
type-II superlattices are studied and "excitonic strings'', in which
many excitons are bound as a string along the growth direction, are predicted.
T. Tsuchiya et al., “A Quantum Monte Carlo Study on Excitonic Molecules
in Type-II Superlattices,” Physica B 249-251, 612-616 (1998)
T. Tsuchiya, “Biexcitons and Charged Excitons in GaAs/AlAs Type-II Superlattices:
A Quantum Monte Carlo Study,” J. of Lumin. 87-89, 509-511 (2000).
T. Tsuchiya, “Possibility of Excitonic Polymers in Type-II Superlattices,”
in Proceedings of the 25th International Conference on the Physics of Semiconductors, edited by N. Miura and T. Ando (Springer, Berlin, 2001), pp.531-532.
2001.
Quantum Monte Carlo studies on excitonic complexes in quantum dots
(1998‐ )
Negative binding energies here predicted.
T. Tsuchiya, “Biexcitons and Charged Excitons in Quantum Dots: A Quantum
Monte Carlo Study,” Physica E 7, 470-474 (2000).
T. Tsuchiya, “ Diffusion Monte Carlo Study on Biexcitons and Charged Excitons in InGaAs
Self-Assembled Quantum Dots,” IPAP Conf. Ser. 2, 201-203 (2001).
Quantum Monte Carlo studies on excitonic complexes in quantum wires
(1998‐ )
Strong enhancement of binding energy of negatively charged excitons in
GaAs/AlGaAs quantum wires was predicted.
T. Tsuchiya, “A Quantum Monte Carlo Study on Excitonic Complexes in Quantum
Wires,” Int. J. Mod Phys. B 15, 3985-3988 (2001).
Quantum Monte Carlo studies on excitonic complexes in quantum wells (1996‐
)
It was clarified that variational studies of excitonic complexes in quantum
wells underestimate their binding energies. Effects of the interface roughness
on enhancement of binding energies for thin quantum wells was demonstrated.
T. Tsuchiya, “A Quantum Monte Carlo Study of Biexcitons and Charged Excitons
in Quantum Wells,” in Extended Abstract of the 17th Electronic Materials Symposium, 171-172 (1998).
T. Tsuchiya, “Binding Energy of Biexcitons and Charged Excitons in Quantum
Wells: A Diffusion Monte Carlo Study,” in Proceedings of the 24th International Conference on the Physics of Semiconductors, edited by D. Gershoni (World Scientific, Singapore, 1999), CD-ROM.
T. Tsuchiya, “A Quantum Monte Carlo Study on Excitonic Molecules in Quantum
Wells,” Solid State Electron. 42, 1523-1526 (1998).
T. Tsuchiya, “Diffusion Monte Carlo Study on Biexcitons and Charged Excitons
in Semiconductor Quantum Structures,” Progress of Theoretical Physics
Supplement 138, 128 (2000).
S. Adachi, T. Tsuchiya, H. Mino, S. Takeyama, G. Karczewski, T. Wojitowicz, and J. Kossut, “Dynamical
Spin Properties of Exciton and Biexciton in CdMnTe/CdTe/CdMgTe Single Quantum
Well,” Physica E 10, 305-9 (2001).
Oscillation of luminescence energy of two-dimensional electron gas in strong
magnetic fields (1993‐1996)
T. Tsuchiya, and T. Ando, “Magnetic Oscillation of Luminescence Energy
in Single Heterostructures,” Jpn. J. Appl. Phys. Suppl. 34-1, 240-242 (1995).
T. Tsuchiya, and T. Ando, “Magnetic Oscillation of Luminescence Energy
in Asymmetric Quantum Wells,” Jpn. J. Appl. Phys. 34, 4544-4547 (1995)
T. Tsuchiya, and T. Ando, “Phase of Magnetic Oscillation of Luminescence
Energy in Asymmetric Quantum Wells,” Surface Science 361/362, 376-379 (1996).
Electron-phonon interaction in semiconductor superlattices (1988‐1991)
Electron-phonon interaction in semiconductor superlattices was clarified,
with use of our continuum approximation for optical phonons.
T. Tsuchiya and T. Ando, “Electron-Phonon Interaction in Semiconductor
Superlattices,” Semicond. Sci. Technol. 7, B73-B76 (1992).
T. Tsuchiya and T. Ando, “Electron-Phonon Interaction in GaAs/AlAs Superlattices,”
Phys. Rev. B47, 7240-7252 (1993).
T. Tsuchiya and T. Ando, “Mobility-Enhancement in Quantum Wells by Electronic-State
Modulation,” Phys. Rev. B 48, 4599-4603 (1993).
T. Tsuchiya and T. Ando, “Effects of Electronic-State Modulation on Mobility
in Quantum Wells,” Surface Science 305, 312-316 (1994).
T. Tsuchiya and T. Ando, “Polaron in GaAs/AlAs Superlattices,” in Proceedings of the 21st International Conference on the Physics of Semiconductors, edited by P. Jiang and H.-Z. Zheng (World Scientific, Singapore,
1993), pp.1004-1007.
Optical phonons in semiconductor superlattices (1986‐1988)
Behavior of optical phonons was clarified through lattice dynamics calculations.
T. Tsuchiya, H. Akera, and T. Ando, “Phonons in GaAs/AlAs Superlattices,”
Phys. Rev. B39, 6025-6033 (1989).
High Electron Mobility Transistor (HEMT) LSI (1984‐1986)
N. Kobayashi, S. Notomi, M. Suzuki, T. Tsuchiya, K. Nishiuchi, K. Odani, A. Shibatomi, T. Mimura, and M. Abe, “A
Fully Operational 1-kbit HEMT Static RAM”, IEEE Trans. Electoron. Devices,
ED-33, 548-553 (1986).
Our Lab.
Top of this page
Home
