Details
| Original language | English |
|---|---|
| Article number | 165434 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 90 |
| Issue number | 16 |
| Publication status | Published - 27 Oct 2014 |
Abstract
We observe a strong negative magnetoresistance at nonquantizing magnetic fields in a high-mobility two-dimensional electron gas. This strong negative magnetoresistance consists of a narrow peak around zero magnetic field and a huge magnetoresistance at larger fields. The peak shows parabolic magnetic field dependence and is attributed to the interplay of smooth disorder and rare strong scatterers. We identify the rare strong scatterers as macroscopic defects in the material and determine their density from the peak curvature.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 16, 165434, 27.10.2014.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Magnetoresistance induced by rare strong scatterers in a high-mobility two-dimensional electron gas
AU - Bockhorn, L.
AU - Gornyi, I. V.
AU - Schuh, D.
AU - Reichl, C.
AU - Wegscheider, W.
AU - Haug, R. J.
PY - 2014/10/27
Y1 - 2014/10/27
N2 - We observe a strong negative magnetoresistance at nonquantizing magnetic fields in a high-mobility two-dimensional electron gas. This strong negative magnetoresistance consists of a narrow peak around zero magnetic field and a huge magnetoresistance at larger fields. The peak shows parabolic magnetic field dependence and is attributed to the interplay of smooth disorder and rare strong scatterers. We identify the rare strong scatterers as macroscopic defects in the material and determine their density from the peak curvature.
AB - We observe a strong negative magnetoresistance at nonquantizing magnetic fields in a high-mobility two-dimensional electron gas. This strong negative magnetoresistance consists of a narrow peak around zero magnetic field and a huge magnetoresistance at larger fields. The peak shows parabolic magnetic field dependence and is attributed to the interplay of smooth disorder and rare strong scatterers. We identify the rare strong scatterers as macroscopic defects in the material and determine their density from the peak curvature.
UR - http://www.scopus.com/inward/record.url?scp=84908396930&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.90.165434
DO - 10.1103/PhysRevB.90.165434
M3 - Article
AN - SCOPUS:84908396930
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 16
M1 - 165434
ER -