Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Debanjan Chowdhury"'
Autor:
Zhuo Yang, Christophe Marcenat, Sunghoon Kim, Shusaku Imajo, Motoi Kimata, Toshihiro Nomura, Albin Muer, Duncan K. Maude, Fumitoshi Iga, Thierry Klein, Debanjan Chowdhury, Yoshimitsu Kohama
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract The mixed-valence compound YbB12 displays paradoxical quantum oscillations in electrical resistivity and magnetic torque in a regime with a well-developed insulating charge gap and in the absence of an electronic Fermi surface. However, sign
Externí odkaz:
https://doaj.org/article/955f35a48a1245c5bf7276078fbc5e20
Autor:
Zhuo Yang, Benoît Fauqué, Toshihiro Nomura, Takashi Shitaokoshi, Sunghoon Kim, Debanjan Chowdhury, Zuzana Pribulová, Jozef Kačmarčík, Alexandre Pourret, Georg Knebel, Dai Aoki, Thierry Klein, Duncan K. Maude, Christophe Marcenat, Yoshimitsu Kohama
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Quantum oscillation phenomenon is an essential tool to understand the electronic structure of quantum matter. Here we report a systematic study of quantum oscillations in the electronic specific heat C el in natural graphite. We show that th
Externí odkaz:
https://doaj.org/article/fdcbb46e8a274bff9dfff8f96253cf72
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-6 (2023)
Abstract The strange metallic regime across a number of high-temperature superconducting materials presents numerous challenges to the classic theory of Fermi liquid metals. Recent measurements of the dynamical charge response of strange metals, incl
Externí odkaz:
https://doaj.org/article/22c16f724fcc437fa52830a1607a7bfa
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-6 (2022)
Abstract What limits the value of the superconducting transition temperature (T c) is a question of great fundamental and practical importance. Various heuristic upper bounds on T c have been proposed, expressed as fractions of the Fermi temperature,
Externí odkaz:
https://doaj.org/article/9b1a39e7de1d465c84563e0e6f1a4908
Publikováno v:
npj Quantum Materials, Vol 6, Iss 1, Pp 1-9 (2021)
Abstract Magic-angle twisted bilayer graphene (MATBG) exhibits a panoply of many-body phenomena that are intimately tied to the appearance of narrow and well-isolated electronic bands. The microscopic ingredients that are responsible for the complex
Externí odkaz:
https://doaj.org/article/c3420fce04f54ac0b93cf636c5202371
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Samarium hexaboride is a candidate topological insulator but recent experiments have found behaviour indicative of a metallic Fermi liquid phase. Here the authors show that the conflicting observations can be accommodated by a model where strong inte
Externí odkaz:
https://doaj.org/article/c140ff4128284388b3b8b3ac8c93a813
Autor:
Liujun Zou, Debanjan Chowdhury
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 032071 (2020)
We propose that quantum Hall bilayers in the presence of a periodic potential at the scale of the magnetic length can host examples of a deconfined metal-insulator transition (DMIT), where a Fermi-liquid (FL) metal with a generic electronic Fermi sur
Externí odkaz:
https://doaj.org/article/bd139468edd146e4b0e1a33e45f74db3
Autor:
Liujun Zou, Debanjan Chowdhury
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023344 (2020)
We discuss a new class of quantum phase transitions—deconfined Mott transition (DMT)—that describe a continuous transition between a Fermi liquid metal with a generic electronic Fermi surface and an electrical insulator without Fermi surfaces of
Externí odkaz:
https://doaj.org/article/013ac635ba5d4ab99fb4f08c94507413
Autor:
Debanjan Chowdhury, Erez Berg
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013301 (2020)
We construct a family of translationally invariant lattice models with a large number (N) of orbitals at every site coupled together via single-electron tunneling. By tuning the relative strength of the electronic bandwidth and on-site interactions,
Externí odkaz:
https://doaj.org/article/e76fd87ceb8248beaa068d5004ae72ad
Publikováno v:
Physical Review X, Vol 8, Iss 3, p 031024 (2018)
We construct examples of translationally invariant solvable models of strongly correlated metals, composed of lattices of Sachdev-Ye-Kitaev dots with identical local interactions. These models display crossovers as a function of temperature into regi
Externí odkaz:
https://doaj.org/article/60990508a4dc4d279a1e0da52fd993a7