Surface energy effects for small holes or particles in elastomers

Spiral phases and two-particle bound sta

Spiral phases and two-particle bound states from a systematic low-energy effective theory for magnons, electrons, and holes in an antiferromagnet

✍ C. Brügger; C.P. Hofmann; F. Kämpfer; M. Pepe; U.-J. Wiese 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 161 KB

We have constructed a systematic low-energy effective theory for hole-and electron-doped antiferromagnets, where holes reside in momentum space pockets centered at ðAEp=2a; AEp=2aÞ and where electrons live in pockets centered at ðp=a; 0Þ or ð0; p=aÞ. The effective theory is used to investigate the m