Abstract
We report a manifestation of first-order magnetic transitions in two-dimensional electron systems. This phenomenon occurs in aluminum arsenide quantum wells with sufficiently low carrier densities and appears as a set of hysteretic spikes in the resistance of a sample placed in crossed parallel and perpendicular magnetic fields, each spike occurring at the transition between states with different partial magnetizations. Our experiments thus indicate that the presence of magnetic domains at the transition starkly increases dissipation, an effect also suspected in other ferromagnetic materials. Analysis of the positions of the transition spikes allows us to deduce the change in exchange-correlation energy across the magnetic transition, which in turn will help improve our understanding of metallic ferromagnetism.
References
31
Referenced
154
-
E. Kisker in Metallic Magnetism H. Capellmann Ed. (Springer-Verlag Berlin 1987) pp. 57–108.
(
10.1007/978-3-642-50068-8_3
) -
Antropov V. P., Harmon B. N., Smirnov A. N., J. Magn. Magn. Mater. 200, 148 (1999).
(
10.1016/S0304-8853(99)00425-4
) / J. Magn. Magn. Mater. by Antropov V. P. (1999) -
Young D. P., et al., Nature 397, 412 (1999).
(
10.1038/17081
) / Nature by Young D. P. (1999) -
Ceperley D., Nature 397, 386 (1999).
(
10.1038/17011
) / Nature by Ceperley D. (1999) -
Papadakis S. J., De Poortere E. P., Shayegan M., Phys. Rev. B 59, R12743 (1999).
(
10.1103/PhysRevB.59.R12743
) / Phys. Rev. B by Papadakis S. J. (1999) - S. Koch R. J. Haug K. v. Klitzing
-
Razeghi M., Phys. Rev. B 47, 4048 (1993).
(
10.1103/PhysRevB.47.4048
) / Phys. Rev. B by Razeghi M. (1993) -
Daneshvar A. J., et al., Phys. Rev. Lett. 79, 4449 (1997).
(
10.1103/PhysRevLett.79.4449
) / Phys. Rev. Lett. by Daneshvar A. J. (1997) -
Jungwirth T., Shukla S. P., Smrčka L., Shayegan M., MacDonald A. H., Phys. Rev. Lett. 81, 2328 (1998).
(
10.1103/PhysRevLett.81.2328
) / Phys. Rev. Lett. by Jungwirth T. (1998) -
Eisenstein J. P., Stormer H. L., Pfeiffer L., West K. W., Phys. Rev. Lett. 62, 1540 (1989).
(
10.1103/PhysRevLett.62.1540
) / Phys. Rev. Lett. by Eisenstein J. P. (1989) - R. G. Clark in Localization and Confinement of Electrons in Semiconductors F. Kuchar H. Heinrich G. Bauer Eds. (Springer-Verlag Berlin 1990) pp. 168–182.
-
Engel L. W., Hwang S. W., Sajoto T., Tsui D. C., Shayegan M., Phys. Rev. B 45, 3418 (1992).
(
10.1103/PhysRevB.45.3418
) / Phys. Rev. B by Engel L. W. (1992) 10.1126/science.289.5488.2320
- T. Jungwirth A. H. MacDonald Phys. Rev. B in press.
-
Piazza V., et al., Nature 402, 638 (1999).
(
10.1038/45189
) / Nature by Piazza V. (1999) - The relevant mass in our measurements is the cyclotron effective mass which in AlAs (100) is 0.46 m e [see for example
- Lay T. S., et al., Appl. Phys. Lett. 62, 3121 (1993); / Appl. Phys. Lett. by Lay T. S. (1993)
- ]. In AlAs (411)B on account of geometric arguments we estimate the cyclotron mass at 0.41 m e .
-
van Kesteren H. W., et al., Phys. Rev. Lett. 61, 129 (1988).
(
10.1103/PhysRevLett.61.129
) / Phys. Rev. Lett. by van Kesteren H. W. (1988) - and references therein.
- Data for Figs. 1B 2 and 3 were collected during different cool-downs.
- In a previous publication (5) we reported an enhanced │ g * │ ≃ 9.0 for 2D electrons in AlAs quantum wells because we chose to combine the effects of both exchange-correlation and Zeeman energies into the effective g factor.
- For approximate values of exchange-correlation energies of 2D electrons in a magnetic field see for example A. H. MacDonald and D. S. Ritchie [ Phys. Rev. B 33 8336 (1986)].
- V. I. Fal'ko
-
Iordanskii S. V., Phys. Rev. Lett. 82, 402 (1999).
(
10.1103/PhysRevLett.82.402
) / Phys. Rev. Lett. by Iordanskii S. V. (1999) -
Viret M., et al., Phys. Rev. Lett. 85, 3962 (2000).
(
10.1103/PhysRevLett.85.3962
) / Phys. Rev. Lett. by Viret M. (2000) - and references therein.
-
Schiffer P., Ramirez A. P., Bao W., Cheong S.-W., Phys. Rev. Lett. 75, 3336 (1995).
(
10.1103/PhysRevLett.75.3336
) / Phys. Rev. Lett. by Schiffer P. (1995) - T. Jungwirth I. Mihalek H. Fertig D. Lilliehöök A. H. MacDonald in preparation.
-
Lilliehöök D., Phys. Rev. B 62, 7303 (2000).
(
10.1103/PhysRevB.62.7303
) / Phys. Rev. B by Lilliehöök D. (2000) - We thank A. MacDonald for illuminating discussions. Our research has been supported by the NSF. We thank E. Palm and T. Murphy for their help with parts of our measurements done at the National High Magnetic Field Laboratory Tallahassee FL which is also supported by the NSF.
Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 27, 2002, 5:52 a.m.) |
Deposited | 1 year, 7 months ago (Jan. 13, 2024, 5:40 a.m.) |
Indexed | 3 weeks, 5 days ago (Aug. 6, 2025, 8:40 a.m.) |
Issued | 24 years, 9 months ago (Nov. 24, 2000) |
Published | 24 years, 9 months ago (Nov. 24, 2000) |
Published Print | 24 years, 9 months ago (Nov. 24, 2000) |
@article{De_Poortere_2000, title={Resistance Spikes at Transitions Between Quantum Hall Ferromagnets}, volume={290}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.290.5496.1546}, DOI={10.1126/science.290.5496.1546}, number={5496}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={De Poortere, E. P. and Tutuc, E. and Papadakis, S. J. and Shayegan, M.}, year={2000}, month=nov, pages={1546–1549} }