Groshaus, JG; Dujovne, I; Gallais, Y; Hirjibehedin, CF; Pinczuk, A; Tan, YW; Stormer, H; ... West, KW; + view all Groshaus, JG; Dujovne, I; Gallais, Y; Hirjibehedin, CF; Pinczuk, A; Tan, YW; Stormer, H; Dennis, BS; Pfeiffer, LN; West, KW; - view fewer (2008) Spin texture and magnetoroton excitations at nu=1/3. PHYS REV LETT , 100 (4) , Article 046804. 10.1103/PhysRevLett.100.046804.

Preview

PDF 103149.pdf Download (2MB)

Abstract

Neutral spin texture (ST) excitations at nu=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of eta(c)=0.020 +/- 0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magnetoroton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at nu=1/3.

Download activity - last month

Export as CSVXMLJSON

Download activity - last 12 months

Export as XMLCSVJSON

Downloads by country - last 12 months

Export as JSONXMLCSV

Archive Staff Only

View Item