TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.27.24 TI - Solitary Atoms Are Stiffer than Groups JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 27 IS - SP - 24 EP - PY - 2011/06/17/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.27.24 A1 - Schirber, Michael ER -