Unconventional field-induced spin gap in an $S=1/2$ chiral staggered chain

J. Liu, S. Kittaka, R. D. Johnson +11

We investigate the low-temperature magnetic properties of the molecule-based chiral spin chain [Cu(pym)(H${}_2$O)${}_4$]SiF${}_6\cdot$H${}_2$O (pym = pyrimidine). Electron-spin resonance,…