Department of Physics, Clemson University, Clemson, SC 29631, USA.|Department of Physics, Clemson University, Clemson, SC 29631, USA.|Department of Physics, Clemson University, Clemson, SC 29631, USA.|Department of Physics, Clemson University, Clemson, SC 29631, USA.|Department of Physics, Clemson University, Clemson, SC 29631, USA.|Department of Physics, Clemson University, Clemson, SC 29631, USA.