Effects of In-plane Magnetic Fields on the Canted Antiferromagnetic Phase in the Bilayer ν = 2 Quantum Hall State

2007 ◽  
Author(s):  
Akira Fukuda ◽  
Shinsuke Kozumi ◽  
Daiju Terasawa ◽  
Norio Kumada ◽  
Yoshiro Hirayama ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Quantum Hall ◽  
Antiferromagnetic Phase ◽  
Quantum Hall State

Stability of soliton lattice phase in the bilayer quantum Hall state under tilted magnetic fields

2006 ◽  
Vol 34 (1-2) ◽  
pp. 81-84 ◽  
Author(s):  
D. Terasawa ◽  
A. Fukuda ◽  
S. Kozumi ◽  
A. Sawada ◽  
Z.F. Ezawa ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Quantum Hall ◽  
Soliton Lattice ◽  
Bilayer Quantum Hall ◽  
Quantum Hall State

Erratum to: “Quantum transport study of canted antiferromagnetic phase in the ν=2 bilayer quantum Hall state”

2007 ◽  
Vol 39 (2) ◽  
pp. 277
Author(s):  
Akira Fukuda ◽  
Shinsuke Kozumi ◽  
Daiju Terasawa ◽  
Yuichi Shimoda ◽  
Norio Kumada ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Quantum Hall ◽  
Antiferromagnetic Phase ◽  
Transport Study ◽  
Bilayer Quantum Hall ◽  
Quantum Hall State

Quantum transport study of canted antiferromagnetic phase in the bilayer quantum Hall state

2006 ◽  
Vol 34 (1-2) ◽  
pp. 77-80
Author(s):  
Akira Fukuda ◽  
Shinsuke Kozumi ◽  
Daiju Terasawa ◽  
Yuichi Shimoda ◽  
Norio Kumada ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Quantum Hall ◽  
Antiferromagnetic Phase ◽  
Transport Study ◽  
Bilayer Quantum Hall ◽  
Quantum Hall State

DESTRUCTION OF CORRELATED BILAYER STATES SUBJECTED TO TILTED MAGNETIC FIELDS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3693-3698 ◽  
Author(s):  
U. ZEITLER ◽  
J. DE JONGE ◽  
J. W. W. VAN TILBURG ◽  
J. C. MAAN ◽  
D. REUTER ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Landau Level ◽  
Quantum Hall ◽  
Electron System ◽  
Dimensional Electron ◽  
Parallel Magnetic Field ◽  
Strongly Coupled ◽  
Plane Field ◽  
Dimensional Electron System ◽  
Quantum Hall State

We use tilted magnetic fields to effectively decouple a strongly coupled bilayer two-dimensional electron system into two separate layers. For our specific sample (tunnelling gap ΔSAS=2.5 meV ) the inter-layer coupling is quenched by an in-plane field B≈14 T , leading to the successive disappearance of all odd-integer states visible in the quantum Hall effect. Such a transition from a bilayer into two single layers is also observed in a solely parallel magnetic field. Surprisingly, the ν=1 the quantum Hall state remains present even for in-plane fields exceeding 20 T. Only when decreasing the total Landau level filling slightly below ν=1 the system undergoes an abrupt transition from a ν=1 quantum Hall state into two (insulating) systems with a half filled Landau level.

scholarly journals Chemical potential and quantum Hall ferromagnetism in bilayer graphene

Science ◽  
2014 ◽  
Vol 345 (6192) ◽  
pp. 58-61 ◽  
Author(s):  
Kayoung Lee ◽  
Babak Fallahazad ◽  
Jiamin Xue ◽  
David C. Dillen ◽  
Kyounghwan Kim ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Chemical Potential ◽  
Hexagonal Boron Nitride ◽  
Quantum Hall ◽  
Bilayer Graphene ◽  
Zero Magnetic Field ◽  
High Magnetic Fields ◽  
Complex Interplay ◽  
Electron Hole ◽  
Quantum Hall State

Bilayer graphene has a distinctive electronic structure influenced by a complex interplay between various degrees of freedom. We probed its chemical potential using double bilayer graphene heterostructures, separated by a hexagonal boron nitride dielectric. The chemical potential has a nonlinear carrier density dependence and bears signatures of electron-electron interactions. The data allowed a direct measurement of the electric field–induced bandgap at zero magnetic field, the orbital Landau level (LL) energies, and the broken-symmetry quantum Hall state gaps at high magnetic fields. We observe spin-to-valley polarized transitions for all half-filled LLs, as well as emerging phases at filling factors ν = 0 and ν = ±2. Furthermore, the data reveal interaction-driven negative compressibility and electron-hole asymmetry in N = 0, 1 LLs.

scholarly journals Probing Quantum Hall State Homogeneity with Surface Waves

2013 ◽  
Vol 456 ◽  
pp. 012030 ◽  
Author(s):  
M E Msall ◽  
W Dietsche ◽  
S Schmult ◽  
K von Klitzing
Keyword(s):  
Surface Waves ◽  
Quantum Hall ◽  
Quantum Hall State

scholarly journals A Chern-Simons effective field theory for the Pfaffian quantum Hall state

1998 ◽  
Vol 516 (3) ◽  
pp. 704-718 ◽  
Author(s):  
Eduardo Fradkin ◽  
Chetan Nayak ◽  
Alexei Tsvelik ◽  
Frank Wilczek
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Quantum Hall ◽  
Effective Field ◽  
Chern Simons ◽  
Quantum Hall State
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