Unconventional quantum Hall effect and Berry’s phase of 2π in bilayer graphene
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Cites background from "Unconventional quantum Hall effect ..."
...A bilayer is interesting be- ause the IQHE shows anomalies, although di erent fromthose observed in a single layer (Novoselov et al., 2006),and also a gap an open between the ondu tion andvalen e band (M Cann and Fal'ko, 2006)....
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References
55,532 citations
"Unconventional quantum Hall effect ..." refers background or methods in this paper
...Also, because carrier mobilities ¡1 in graphitic films are weakly dependent on n [3,4,10], measurements in constant B are more informative....
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...For further details about microfabrication of graphitic field-effect devices and their measurements we refer to the earlier work [3,4,10,11]....
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...The periodicity An of quantum oscillations in as a function of n is defined by the density of states gB /$ , on each LL [1-10] (see Fig....
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18,958 citations
"Unconventional quantum Hall effect ..." refers background or methods in this paper
...One is the conventional quantum Hall effect, characteristic of two-dimensional semiconductor systems [1,2], and the other is its relativistic counterpart recently observed in graphene, where charge carriers mimic Dirac fermions characterized by Berry’s phase n, which results in a shifted positions of Hall plateaus [3-9]....
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...For further details about microfabrication of graphitic field-effect devices and their measurements we refer to the earlier work [3,4,10,11]....
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...For 1L graphene, this results in a ^-shift in SdHO and a related %-shift in the sequence of QHE plateaus [3-9], as compared to the conventional 2D systems where Berry’s phase is zero....
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...Also, because carrier mobilities ¡1 in graphitic films are weakly dependent on n [3,4,10], measurements in constant B are more informative....
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...The origin of the unconventional QHE behavior lies in the coupling between two graphene layers, which transforms massless Dirac fermions, characteristic of single-layer (1L) graphene [3-9], (Fig....
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11,122 citations
10,586 citations
"Unconventional quantum Hall effect ..." refers methods in this paper
...For further details about microfabrication of graphitic field-effect devices and their measurements we refer to the earlier work [3,4,10,11]....
[...]
10,112 citations
"Unconventional quantum Hall effect ..." refers background or methods in this paper
...One is the conventional quantum Hall effect, characteristic of two-dimensional semiconductor systems [1,2], and the other is its relativistic counterpart recently observed in graphene, where charge carriers mimic Dirac fermions characterized by Berry’s phase n, which results in a shifted positions of Hall plateaus [3-9]....
[...]
...For further details about microfabrication of graphitic field-effect devices and their measurements we refer to the earlier work [3,4,10,11]....
[...]
...For 1L graphene, this results in a ^-shift in SdHO and a related %-shift in the sequence of QHE plateaus [3-9], as compared to the conventional 2D systems where Berry’s phase is zero....
[...]
...Also, because carrier mobilities ¡1 in graphitic films are weakly dependent on n [3,4,10], measurements in constant B are more informative....
[...]
...The origin of the unconventional QHE behavior lies in the coupling between two graphene layers, which transforms massless Dirac fermions, characteristic of single-layer (1L) graphene [3-9], (Fig....
[...]