IBM Research Division, T. J. Watson Research Center, Yorktown Heights, NY;NeoParadigm Labs, Inc., San Jose, CA;IBM Research Division, T. J. Watson Research Center, Yorktown Heights, NY;IBM Semiconductor Research and Development Center, Hopewell Junction, NY;IBM Semiconductor Research and Development Center, Hopewell Junction, NY;IBM Semiconductor Research and Development Center, Hopewell Junction, NY;IBM Semiconductor Research and Development Center, Hopewell Junction, NY;IBM Semiconductor Research and Development Center, Hopewell Junction, NY;IBM Semiconductor Research and Development Center, Hopewell Junction, NY;IBM Research Division, T. J. Watson Research Center, Yorktown Heights, NY