Strong Quasi-Particle Tunneling Study in the Paired Quantum Hall States
نویسندگان
چکیده
منابع مشابه
Spin order in paired quantum Hall states.
We consider quantum Hall states at even-denominator filling fractions, especially nu=5/2, in the limit of small Zeeman energy. Assuming that a paired quantum Hall state forms, we study spin ordering and its interplay with pairing. We give numerical evidence that at nu=5/2 an incompressible ground state will exhibit spontaneous ferromagnetism. The Ginzburg-Landau (GL) theory for the spin degrees...
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We briefly summarize properties of quantum Hall states with a pairing or clustering property. Their study employs a fundamental connection with parafermionic Conformal Field Theories. We report on closed form expressions for the many-body wave functions and on multiplicities of the fundamental quasi-hole excitations. 1
متن کاملTunneling in Paired Fractional Quantum Hall States: Conductance and Andreev Reflection of Non-abelions
We study the edge transport properties of paired fractional quantum Hall (FQH) states— the Haldane-Rezayi (HR), Moore-Read (Pfaffian) and Halperin (331) states. A table of exponents is given for the tunneling between the edges of paired FQH states in gated 2D structures and the tunneling into the edge of FQH states from a normal Fermi liquid (N). It is found that HR, Pfaffian and 331 states hav...
متن کاملPaired and Stripe States in the Quantum Hall System
In recent experiments, highly anisotropic states are observed in the half-filled third and higher Landau levels[1]. In the half-filled second Landau level the fractional quantum Hall effect (FQHE)[2] and transition to the highly anisotropic state are observed[3]. Theoretically the anisotropic states are regarded as stripe states[4] or unidirectional charge density wave states which are plausibl...
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We analyze a quantum spin Hall device with a point contact connecting two of its edges. The contact supports a net spin tunneling current that can be probed experimentally via a two-terminal resistance measurement. We find that the low-bias tunneling current and the differential conductance exhibit scaling with voltage and temperature that depend nonlinearly on the strength of the electron-elec...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2001
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.70.3632