Group Members Research Highlights Laboratories Publications Teaching Outreach

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Peng Xiong        

Professor of Physics,  Center for Materials Research and Technology

Research

supported by:

Selected Recent Publications:

 

· Molecular tunnel junctions

1. X. Zhang, S.A. McGill, and P. Xiong, Origin of the Humidity Sensitivity of Al/AlO_x/MHA/Au Molecular Tunnel Junctions, Journal of the American Chemical Society 129, 14470 (2007).

 

·         Magnetic junctions

1.      J.S. Parker, P.G. Ivanov, D.M. Lind, P. Xiong, and Y. Xin, Large Inverse Magnetoresistance of CrO₂/Co Junctions with an Artificial Barrier, Phys. Rev. B. 69, 220413(R) (2004).

2.      C. Ren, J. Trbovic, P. Xiong, and S. von Molnár, Zeeman Splitting in Ferromagnetic Schottky Barrier Contacts Based on Doped EuS, Appl. Phys. Lett. 86, 012501 (2005).

 

·         Magnetic semiconductors

1.      I.J. Guilaran, D.E. Read, R. Kallaher, P. Xiong, S. von Molnár, P. Stampe, R. Kennedy, and J. Keller, Observation of Anomalous Hall Effect in Thin Film EuS, Phys. Rev. B 68, 144424 (2003).

2.      R. Kennedy, P. Stampe, E. Hu, P. Xiong, S. von Molnár, and Y. Xin, Hopping Transport in TiO₂:Co; A Signature of Multiphase Behavior, Appl. Phys. Lett. 84, 2832 (2004).

 

·         Spin polarization measurement via superconducting spectroscopy

1.      J.S. Parker, S.M. Watts, P.G. Ivanov, and P. Xiong, Spin Polarization of CrO₂ at and across an Artificial Barrier, Phys. Rev. Lett. 88, 196601 (2002).

2.      C. Ren, J. Trbovic, J.G. Braden, R.L. Kallaher, J.S. Parker, S. von Molnár, and P. Xiong, Measurement of the Spin Polarization of the Magnetic Semiconductor EuS with Zero-field and Zeeman-split Andreev Reflection Spectroscopy, Physical Review B 75, 205208 (2007).

  

·         Hall magnetometry and nanoparticle magnetism

1.      Y. Li, C. Ren, P. Xiong, S. von Molnár, Y. Ohno, and H. Ohno, Modulation of Noise in Submicron GaAs/AlGaAs Hall Devices by Gating, Phys. Rev. Lett. 93, 246602 (2004).

2.      Y. Li, P. Xiong, S. von Molnár, Y. Ohno, and H. Ohno, Magnetization Reversal in Elongated Fe Nanoparticles, Phys. Rev. B. 71, 214425 (2005).

 

 ·         Hybrid biomechanical nanostructures

1.      G. Mihajlović, N. M. Brunet, J. Trbović, P. Xiong, S. von Molnár, and P. B. Chase, An All Electrical Switching and Control Mechanism for Actomyosin-Powered Nanoactuators, Appl. Phys. Lett. 85, 1060 (2004).

2.      T.J. Grove, K.A. Puckett, N.M. Brunet, G. Mihajlović, L.A. McFadden, P. Xiong, S. von Molnár, T.S. Moerland and P.B. Chase, Packaging Actomyosin-based Biomolecular Motor-driven Devices for Nnanoactuator Applications, IEEE Transactions on Advanced Packaging 28, 556 (2005).

 

·         Hall magnetometry: biosensing

1.      G. Mihajlovic, P. Xiong, S. von Molnár, K. Ohtani, H. Ohno, M. Field, and G.J. Sullivan, Detection of Single Magnetic Bead for Biological Applications using an InAs Quantum-Well Micro-Hall Sensor, Appl. Phys. Lett. 87, 112502 (2005).

2.     G. Mihajlović, P. Xiong, S. von Molnár, M. Field, and G.J. Sullivan, InAs Quantum Well Hall Devices for Room-Temperature Detection of Single Magnetic Biomolecular Labels, J. Appl. Phys. 102, 034506 (2007).

 

· Nano FET: sensors and assembly

1.    Y. Cheng, P. Xiong, L.L. Fields, J.P. Zheng, R. Yang, and Z.L. Wang, Intrinsic Characteristics of Semiconducting Oxide Nanobelt Field Effect Transistors, Appl. Phys. Lett. 89, 093114 (2006).

2.     S.A. McGill, S.G. Rao, P. Manandhar, S. Hong, and P. Xiong, High-performance, Hysteresis-free Carbon Nanotube FETs via Directed Assembly,