YUHANG REN, Ph.D.
Assistant Professor
Department of Physics and Astronomy
Hunter College

Office Address:
695 Park Avenue, Room 1204 HN
New York, NY 10065

Phone: 212 772-5258
Fax: 212 772-5390
Email: yre@hunter.cuny.edu

Office Hours for Spring 2008:  

M, W 2-3 PM

 

RESEARCH INTERESTS & ACTIVITIES

Novel electronic and magnetic materials and devices, semiconductor quantum structures, optical response of solids, spintronic and electronic properties of solids, nano-fabrication, biomedical optics, coherent ultrafast x-rays, THz, far- and mid-infrared spectroscopy.

The Ultrafast Optics Group

CLASSES FOR 2005 - 2008

Fall 2008

Physics 334: Intermediate Electricity & Magnetism

Spring 2008

Physics 120: General Physics: Introduction to Electricity and Magnetism

Fall 2005, 2007

Physics 121: Introduction to Electricity, Magnetism, Light, & Quantum Physics

Spring 2006, 2007

Physics 111: General Physics: Introductory Course in Mechanics, Heat, and Sound

Fall 2006

Education History

Ph.D in Laser & Optics (and Surface & Interface), Applied Science Dep. May 09, 2003
College of William & Mary, USA
Thesis: Time-Resolved Optical Studies of Colossal Magneto-Resistance and Charge- Density Wave Materials ( Advisor : Prof. Gunter Lüpke)

Ph. D in Condensed Matter Physics, Physics Dep. May 26, 1999
Zhejiang University, China
Thesis: Confined Polaron in Low-dimensional Semiconductor Heterojunctions ( Honored )
(Advisors : Prof. Qirui Zhang and Prof. Zhengkuan Jiao)

RECENT PUBLICATIONS 

“Observation of insulating nano-islands in ferromagnetic GaMnAs”, D. M. Wang, Y. H. Ren, P. W. Jacobs, S. Fahy, X. Liu, J. K. Furdyna, V. F. Sapega, and R. Merlin, (submitted to Phys. Rev. Lett., 2008.)

“Magnetic anisotropy and spin wave relaxation in CoFe/PtMn/CoFe trilayer films”, Y. H. Ren, C. Wu, G. Yu, C. Pettiford, and N. X. Sun, (submitted to Phys. Rev. B, 2008.)

“Time-resolved optical studies of spin and quasiparticle dynamics in in colossal magnetoresistance materials: La_0.67Ca_0.33 MnO₃, La_0.67Sr_0.33MnO₃, and Sr₂FeMoO₆”, Y.H. Ren, M. Ebrahim, H.B. Zhao, G. Luepke, Z. A. Xu, V. Adyam, and Qi Li, Phys. Rev. B 78, 014408 (2008).

“Ferromagnetic resonance studies of surface and bulk spin-wave modes in CoFe/PtMn/CoFe multilayer films”, Cheng Wu, Steven Greenbaum, Carl Pettiford, Nian X Sun, Yuhang Ren J. App. Phys. 103. 07B525 (2008).

“Angular dependence of spin-wave resonance and relaxation in half-metallic Sr2FeMoO6 thin films”, Tetiana Nosach, Gabriella Mullady, Steven Greenbaum, Adyam Venimadhav, Qi Li, Yuhang Ren J. App. Phys. 103. 07E311 (2008).

  “Universal discriminator for completely unknown optical qubits”, Bing He, Janos Bergou, Yuhang Ren, Phys. Rev. A 76, 032301 (2007).

“Generation and detection of coherent longitudinal acoustic phonons in the La_0.67Sr_0.33 MnO₃ thin films by femtosecond light pulses”, Y. H. Ren, M. Trigo, R. Merlin, Venimadhav Adyam, and Qi Li, Appl. Phys. Lett. 90, 251918 (2007).

“Light-induced magnetic precession in (Ga,Mn)As slabs: Hybrid standing-wave Damon-Eshbach modes”, D. M. Wang, Y. H. Ren, X. Liu, J. K. Furdyna, M. Grimsditch, and R. Merlin, Phys. Rev. B 75, 233308 (2007).

“Ultrafast magneto-optical Kerr study of standing spin waves in ferromagnetic GaMnAs films”, D. M. Wang, Y. H. Ren, X. Liu, Y. J. Cho, J. K. Furdyna, M. Grimsditch, and R. Merlin, Superlattices and Microstructures 41, 372 (2007). 

“Anomalous first-to-zero sound crossover in La_1-xCa_xMnO₃”, Y. H. Ren , G. Lüpke, Y. F. Hu, Qi Li, C. S. Hong, N. H. Hur, and R. Merlin Phys. Rev. B 74, 012405 (2006).

“Low-energy collective excitations in a charge–density wave conductor K_0.3MoO₃”, Z. A. Xu, X. F. Xu, G. Lüpke and Y. H. Ren, Journal of Luminescence 119-120, 395 (2006).

Click here to see full list of publications and contributed talks