Jiufeng Tu

Associate Professor

The City College of New York

Physics Department

Contact Information:
MR-330A
160 Convent Avenue
New York, NY 10031
(212) 650-5558
jtu@sci.ccny.cuny.edu

Education
Harvard University, MA	A.B. & A.M.	1993	Physics
Cornell University, NY	M.S.	1995	Physics
Cornell University, NY	Ph.D.	2000	Physics

Positions & Employment
2008 - present	Associate Professor, The City College of New York
2003 - 2007	Assistant Professor, The City College of New York
2000 - 2003	Research Associate, Brookhaven National Laboratory

Research Interests

Optical Spectroscopy

Publications

"Infrared Hall conductivity in optimally doped Bi2Sr2CaCu2O8+d : Drude behavior examined by experiment and fluctuation-exchange-model calculations" D. C. Schmadel, G. S. Jenkins, J. J. Tu, G. D. Gu, Hiroshi Kontani and H. D. Drew, Phys. Rev. B 75, 140506 R (2007).

"Extracting the electron-boson spectral function a2F(w) from infrared and photoemission data using inverse theory" S. V. Dordevic, C. C. Homes, J. J. Tu, T. Valla, M. Strongin, P. D. Johnson, G. D. Gu, and D. N. Basov, Phys. Rev. B 71, 104529 (2005).

"Marginal Fermi liquid analysis of 300 K reflectance of Bi2Sr2CaCu2O8+d " J. Hwang, T. Timusk, A. V. Puchkov, N. L. Wang, G. D. Gu, C. C. Homes, J. J. Tu, and H. Eisaki, Phys. Rev. B 69, 094520 (2004).

"Angle-resolved Photoemission Spectroscopy and Optical Renormalizations: Phonons or Spin Fluctuations" E. Schachinger, J. J. Tu, J. P. Carbotte, Phys. Rev. B 67, 214508 (2003).

"Optical Properties of Ultra-thin Films: Evidence for a Dielectric Anomaly at the Insulator to Metal Transition" J. J. Tu, C. C. Homes and M. Strongin, Phys. Rev. Lett. 90, 017402 (2003).

"Optical Studies of Charge Dynamics in the Optimally Doped Bi2Sr2CaCu2O8+d Single Crystals" J. J. Tu, C. C. Homes, G. D. Gu, D. N. Basov and M. Strongin, Phys. Rev. B 66, 144514 (2002).

"Optical Properties of c-axis Oriented Superconducting MgB2 Films" J. J. Tu, G. L. Carr, V. Perebeinos, C. C. Homes, M. Strongin, P. B. Allen, W. N. Kang, Eun-Mi Choi, Hyeong-Jin Kim, and Sung-Ik Lee, Phys. Rev. Lett. 87, 277001 (2001).

"Total Number Density of Raman-Active Two Level Systems in Fluorite Mixed Crystals and the Law of Mass Action" J. J. Tu and A. J. Sievers, Phys. Rev. Lett. 83, 4077 (1999).

Grants Awarded (past 7 yrs.)

Infrared Studies of CdMgTe as the Material of Choice for Room Temperature Gamma-ray Detectors, NSF/DNDO

Spectroscopic and Local Magnetic Measurements in High-Spin Molecular Magnets, NSF

Crystal Growth and Spectroscopic Studies of Low Dimensional Electron Systems, DOE/BNL

Utilizing Computer Technology in an Introductory Physics Course with a Diverse Student Body, Hewlett Packard

Research Mentoring

Served as an advisor for 4 undergraduate students, 3 doctoral students, and as a committee member for 6 doctoral students.

Institution/Departmental Committee Memberships

Lab Committee
Space Committee

Professional Memberships

American Physical Society

Collaborators

Philips B. Allen, SUNY-Stony Brook
Jules P. Carbotte, McMaster
G. Larry Carr, NSLS, BNL
Genda Gu, BNL
Christopher C. Homes, BNL
Peter D. Johnson, BNL
Laszlo Mihaly, SUNY-Stony Brook
Myriam P. Sarachik, City College
Thomas Timusk, McMaster
X.X. Xi, Penn State

Existing Institution Research Laboratory or Research Center

CREST - Center for Exploitation of Nanostructures in Sensors and Energy Systems (CENSES)
Funding Agency - NSF
Number of Participants - ~ 20 faculty
Role of Professor Tu - Project leader

BNL Experiences

Year 1 - Dates: 6/10/06 through 8/14/06

Mentor - Myron Strongin

Departments - PO

Project Name - Nucleation properties of materials deposited onto carbon nanotubes at low temperatures

Description - Initial experiments have indicated that metals deposited onto carbon nanotubes at low temperatures have nucleation properties that are different from that of those evaporated onto usual “flat” substrates. In some intuitive sense this is to be expected since now the curvature of the nanotube substrate is of the order of the curvature of the deposited nanoparticle (~ 20 Å). The main goal of this project will be to increase our understanding of this problem on the nano-scale. The experimental tools that are available at Brookhaven National Laboratory for this work include transmission electron microscopy, electrical transport, and optical transmission measurements.

Number of participants - 2

Personal Comments

The FaST program has broadened the horizon in my research.

For more information about the Faculty and Student Team program, contact:

Noel Blackburn
Brookhaven National Laboratory
Building 438, PO Box 5000
Upton, New York 11973-5000
(631) 344-2890
(631) 344-5832 fax