Donald Heiman Professor PhD University of California, 1975 (617)373-2912 heiman@neu.edu

Research Summary:

Professor Heiman's research group focuses on several challenging and technologically important areas: (1) ferromagnetic semiconductors (e.g. GaMnAs and GaCrAs) for spintronic applications; (2) molecular beam epitaxy (MBE) crystal growth; (3) device engineering for information technology; and (4) correlated electrons in 2D - metal-insulator transition and quantum Hall effects. The group's primary experimental tools are optical measurements and spectroscopy in high magnetic fields and at low temperatures.  Two magnets are available, a 9.5 T optical magnet and a 14 T cryogen-free superconducting magnet.  A new  5 T SQUID magnetometer has recently been installed.  Research projects and instrumentation are supported by the National Science Foundation and the University.

Recent Publications:

• Y.J. Park, M. van Veenhuizen, J.S. Moodera, C.H. Perry and D. Heiman, Generation and Detection of Spin current in GaAs with MgO Tunnel Barriers, Phys. Rev. Lett. (2007).
• S.D. Yoon, Yajie Chen, D. Heiman, Aria Yang, Nian Sun, C. Vittoria, and V.G. Harris, Room Temperature Magnetism in Semiconducting Films of ZnO Doped with Ferric Ions, J. Appl. Phys. 99, 1 (2006).
• L. Zhang, D. Basiaga, J.R. O'Brien and D. Heiman, Enhanced Ferromagnetic Phase Diagram of Epitaxial (Co,Mn) Alloys on GaAs(001), J. Appl. Phys. 98, 106101 (2005).
• P. LeClair, J.S. Moodera, J. Philip, and D. Heiman, Coexistence of Ferromagnetism and Superconductivity in Ni/Bi Bilayers, Phys. Rev. Lett. 94, 037006 (2005).
• D. Heiman, Y.J. Chen, D. Basiaga, L. Zhang, and P.G. Murugesan, Heusler Half-Metals on GaAs for Spin Injection, Compound Semiconductors 2004, eds. J.C.Woo, et al., Inst. Phys. Conf. Ser. Num. 184 (Institute of Physics, Bristol, 2005), pp. 153-160.

Related Links