Abstract
It is found that at a critical value of the magnetic field in which a system of composite fermions becomes completely spin-polarized, the temperature dependence of the electronic spin polarization is a linear function at low temperatures. It is shown that the slope of this dependence is determined by the Fermi energy of the composite fermions. This made it possible to measure the Fermi energy and the Zeeman splitting of the composite fermions. A large amplification of the spin splitting of composite fermions for complete spin polarization of the system is found. This makes it possible to measure the strength of the interaction between composite fermions.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. K. Jain, Phys. Rev. Lett. 63, 199 (1989); Adv. Phys. 41, 105 (1992).
B. I. Halperin, P. A. Lee, and N. Read, Phys. Rev. B 47, 7312 (1993).
R. L. Willett, R. R. Ruel, K. W. West, and L. N. Pfeiffer, Phys. Rev. Lett. 71, 3846 (1993).
R. R. Du, H. L. Stormer, D. C. Tsui et al., Phys. Rev. Lett. 70, 2944 (1993); R. R. Du, A. S. Yeh, H. L. Stormer et al., Phys. Rev. Lett. 75, 3926 (1995).
W. Kang, H. L. Stormer, L. N. Pfeiffer et al., Phys. Rev. Lett. 71, 3850 (1993).
I. V. Kukushkin, K. v. Klitzing, and K. Eberl, Phys. Rev. Lett. 82, 3665 (1999).
I. V. Kukushkin, K. v. Klitzing, and K. Eberl, Phys. Rev. B 55, 10607 (1997).
I. V. Lerner and Yu. E. Lozovik, Zh. Éksp. Teor. Fiz. 78, 1167 (1980) [Sov. Phys. JETP 51, 588 (1980)].
Author information
Authors and Affiliations
Additional information
Pis’ma Zh. Éksp. Teor. Fiz. 70, No. 11, 722–726 (10 December 1999)