Zobrazeno 1 - 10
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pro vyhledávání: '"weak coupling theory"'
Publikováno v:
PhysRevB.110.L121117 (2024)
Strong correlations occur in magic-angle twisted bilayer graphene (MATBG) when the octet of flat moir\'e minibands centered on charge neutrality (CN) is partially occupied. The octet consists of a single valence band and a single conduction band for
Externí odkaz:
http://arxiv.org/abs/2401.02872
Autor:
Maier, Thomas A., Okamoto, Satoshi
Publikováno v:
Phys. Rev. B 108, L100402 (2023)
Inelastic neutron scattering provides a powerful probe of the magnetic excitations of quantum magnets. Altermagnets have recently emerged as a new class of magnets with vanishing net magnetization characteristic of antiferromagnets and with a spin-sp
Externí odkaz:
http://arxiv.org/abs/2307.03793
Autor:
Long, Gaoping, Lin, Chun-Yen
The weak coupling loop quantum theory with Abelian gauge group provides us a new perspective to study the weak coupling properties of LQG. In this paper, the weak coupling theory of all dimensional loop quantum gravity is established based on a sympl
Externí odkaz:
http://arxiv.org/abs/2211.07498
Publikováno v:
Phys. Rev. B 107, 224516 (2023)
The possibility of realizing pair density wave (PDW) phases, in which Cooper pairs have a finite momentum, presents an interesting challenge that has been studied in a wide variety of systems. In conventional superconductors, this is only possible wh
Externí odkaz:
http://arxiv.org/abs/2209.14469
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Autor:
Nakazawa, Kazuki, Kohno, Hiroshi
Topological Hall effect (THE) caused by a noncoplanar spin texture characterized by a scalar spin chirality is often described by the Berry phase, or the associated effective magnetic field. This picture is appropriate when the coupling, $M$, of cond
Externí odkaz:
http://arxiv.org/abs/1808.04543
Autor:
You, Yi-Zhuang, Vishwanath, Ashvin
Publikováno v:
npj Quantum Materials volume 4, Article number: 16 (2019)
We develop a weak coupling approach to superconductivity in twisted bilayer graphene, starting from the Fermi liquid regime. A key observation is that near half filling, the fermiology consists of well nested Fermi pockets derived from opposite valle
Externí odkaz:
http://arxiv.org/abs/1805.06867
Autor:
Hotta, Takashi
Publikováno v:
J. Phys. Soc. Jpn. 79, 023709 (2010).
Emergence of superconductivity in a two-band system coupled with breathing and Jahn-Teller phonons is discussed in a weak-coupling limit. With the use of a standard quantum mechanical procedure, the phonon-mediated attraction is derived. From the ana
Externí odkaz:
http://arxiv.org/abs/1003.5274
Autor:
Ghosh, Haranath
We study the superconducting phase with two component order parameter scenario, such as, $d_{x^2-y^2} + e^{i\theta}s_{\alpha}$, where $\alpha = xy, x^2+y^2$. We show, that in absence of orthorhombocity, the usual $d_{x^2-y^2}$ does not mix with usual
Externí odkaz:
http://arxiv.org/abs/cond-mat/9906142