Computational Condensed Matter Group

Department of Physics

Sharif University of Technology


 

Welcome to Keivan Esfarjani's  home page

Teaching:

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Condensed Matter II Homework Problems    (here is the take home final exam)

Applied Quantum Mechanics Homework Problems   

Research Activities: 

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The general theme of my research is the study of electronic, transport and mechanical properties of nanoscale systems by Tight-Binding and ab-initio methods, and Molecular Dynamics.
 

• Magnetism and Spin dynamics in quantum dots.
• Study of thermodynamic properties of clusters and their abundance.
• Calculation of transport properties of doped nanotubes (<- pictures here).
• Formation process of carbon nanotubes.
• Quantum transport in disordered wires and nanoelectronic device design.  
• Effect of interaction and disorder on the ground state of the 2D electron gas.
• Thermoelectric effects in nanoscale
• Ferromagnetic fullerenes

Collaborators:

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• Amir Farajian (IMR)
• Marcel Sluiter (IMR)
• Yoshiyuki Kawazoe (IMR)  
• Bilal Tanatar (Bilkent University)

Students:

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• Hossein Cheraghchi (D2)
• Mahdi Fazeli (D2)

        Alumni:

• Mohammad Khazaei (MSc)
• Hossein Hagghi (MSc)
• Mohsen Golafrooz (MSc)
• Zahra Nasrollahi (MSc)
• Mohammad Saeed Bahramy (MSc)
• Saeid Abedinpour (MSc)
• Narjes Gorjizadeh (MSc)
• Mohammad Reza Mozaffari (MSc)
• Ehsan Khatami (MSc)
• Mahmoud Reza Ghaznavi (MSc)
• Mona Zebarjadi (MSc)
• Ali Asghar Shokri (PhD)
• Mohammad Mardani (PhD)

Selected Recent Publications:

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• Computational Materials Science from ab initio to Monte Carlo Methods  (Springer Series in Solid State Sciences, 129) by K. Ohno, K. Esfarjani and Y. Kawazoe
• Band structure and Chemical bonding in C58BN doped fullerenes; PRB, 50, 17830, (1994).
• Stability of C60B10 ; MRS Proceedings, p. 229 (Fall 1994).
• Bilayer of Wigner crystal in the harmonic approximation; JPCM, 7, p. 7217 (1995).
• Site occupation reversal in FeCr sigma phase ; PRL, 75, p. 3142 (1995).
• Ab-initio MD simulation of alkaline metal insertion into C60 cage ; PRL, 76, p. 3590 (1996).
• Stability and Vibrational spectra of toroidal C240 fullerenes ; Z. fur Phys. D, 41, p. 73 (1997).
• Simulated annealing of small silicon clusters by TB ; Nuclus'97 Conf. Proceedings, p. 403-406 (1997).
• Self-Consistent tight-binding formalism for charged systems, JPCM, 10, 8257 (1998).
• Electronic and transport properties of N-P doped nanotubes, APL, 74, 79 (1999).
• The three-Fermion problem in two and three dimensions; a unified variational approach, J. Phys. B, 32, 749 (1999).
• Nonlinear coherent transport through doped nanotube junctions, PRL, 82, 5084 (1999).   <--    Take a look at Chips from tubes in the APS Focus page
• Localized-basis-set optimization (To appear in Comp. Mat. Sci. 1999).
• Ab initio study of dopant insertion into carbon nanotubes, J. Chem Phys (1999). 
• Screening at doped nanotube junctions beyond linear response, PRB 65, 165415 (2002).

• Oscillator strength calculations in color centers of diamond and the role of spin, Eur. Phys. J. B 39, 441–446 (2004).