Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Toshimasa Fujisawa"'
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-9 (2023)
Abstract Dynamics of integrable systems, such as Tomonaga-Luttinger (TL) liquids, is deterministic, and the absence of stochastic thermalization processes provides unique characteristics, such as long-lived non-thermal metastable states with many con
Externí odkaz:
https://doaj.org/article/55445992392a4489ad58136b4aa29323
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Previous work has focused on charge fractionalization in quantum Hall edge channels coupled by Coulomb interaction without inter-channel tunneling. Here, the authors investigate the regime of disorder-induced tunneling, demonstrating robust fractiona
Externí odkaz:
https://doaj.org/article/33095d2888a04286b962d44e9ded7d1d
Autor:
Masayuki Hashisaka, Toshimasa Fujisawa
Publikováno v:
Reviews in Physics, Vol 3, Iss , Pp 32-43 (2018)
In interacting one-dimensional (1D) systems, the quasi-particle picture in Fermi-liquid theory cannot successfully describe low-energy physics. Instead, electron dynamics in one dimension can be described as collective excitations, i.e., charge- and/
Externí odkaz:
https://doaj.org/article/a180abb5934743bc91148450b0429753
Autor:
Ryota Konuma, Chaojing Lin, Tokuro Hata, Taichi Hirasawa, Takafumi Akiho, Koji Muraki, Toshimasa Fujisawa
Heat transport in multiple quantum-Hall edge channels at Landau-level filling factor nu = 2, 4, and 8 is investigated with a quantum point contact as a heat generator and a quantum dot as a local thermometer. Heat distribution among the channels rema
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f917468aec0baa358d9ac550527fa307
Autor:
Chaojing Lin, Toshimasa Fujisawa
Publikováno v:
Physical Review B. 104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e39336c44d15f2d8a866c514884cbafb
https://doi.org/10.1103/physrevb.104.079902
https://doi.org/10.1103/physrevb.104.079902
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Fractionalization is a phenomenon where an elementary excitation partitions into several pieces. This picture explains non-trivial transport through a junction of one-dimensional edge channels defined by topologically distinct quantum Hall states, fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b480c5dd7226ee97e790af569c9e5b0d
https://doi.org/10.1038/s41467-020-20395-7
https://doi.org/10.1038/s41467-020-20395-7
Quantum Hall (QH) edge channels appear not only along the edge of the electron gas but also along an interface between two QH regions with different filling factors. However, the fundamental transport characteristics of such interface channels are no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab89d2b567510bba73a136d681993516
Publikováno v:
Physical Review B.
We report quantum Hall effect breakdown of a local filling factor v_local = 1 state formed in a bulk v_bulk = 2 system in an AlGaAs/GaAs heterostructure. When a finite source-drain bias is applied across the local system, the breakdown occurs in two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdb3eabded2359f09519bf098686932c
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100815102
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100815102
Autor:
Toshimasa Fujisawa
Publikováno v:
Annalen der Physik. 534:2100354
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c2858851c3de23123c024ef2e6c72ed
https://doi.org/10.1002/andp.202100354
https://doi.org/10.1002/andp.202100354
Publikováno v:
Extended Abstracts of the 2019 International Conference on Solid State Devices and Materials.
Quantum antidots (QAD), which are a potential energy hill in a quantum Hall state, offer an ideal test-bed to study bound states in quantum Hall states. So far, electron transport in QAD devices has been investigated mostly by measuring the voltage b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f560a0fcb64a65e7f7a299edbe48d2f8
https://doi.org/10.7567/ssdm.2019.ps-9-15
https://doi.org/10.7567/ssdm.2019.ps-9-15