cmp-mlの皆様
東大物性研の尾崎です。
明日3/25 (金) 16:00より、下記の要領にて物性研究所理論セミナーを開催致しま
す。
セミナーはZOOMでの開催となります(下記リンクから事前登録をお願い致します)。
どなたでもご自由に参加できます。
皆様のご参加をお待ちしております。
どうぞよろしくお願い致します。
尾崎泰助
東京大学物性研究所
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前略
下記のとおり、物性研究所 理論セミナーを行いますのでお知らせいたします。
皆様のご参加を歓迎致します。
* セミナーはZOOMでの開催となりますので、事前登録を下記リンク先にてお願い致し
ます。
Dear Colleagues,
The following Theory Seminar on ZOOM will be held.
You are very welcome to attend. (Please register in advance.）
============================
Date：Mar. 25 (Fri.), 2022 16:00-17:00
Place： On Zoom (Access information will be provided to you after the
registration)
Speaker： Assoc. Prof. Myung Joon Han
Affiliation： Department of Physics, KAIST
Title: Hund Physics Landscape of Two-Orbital Systems
Abstract：
Hund metal is a recently coined term to refer to a special type of
correlated metals in which atomic Hund interaction plays the key role [1].
In this talk, after a brief introduction to Hund metal, I will present our
recent progress on this issue [2]. We conducted a detailed investigation on
the two-orbital case which has been on the periphery of the attention. We
identify distinctive regimes, particularly the four different correlated
metals; one stems from the proximity to a Mott insulator and the other three
we call ‘intermediate’ metal, ‘weak Hund’ metal, and
‘valence-skipping’ metal. Defining criteria characterizing these metals is
suggested. Contrary to conventional wisdom the current study establishes the
existence of Hund metallicity in two-orbital systems. Our result also
provides useful insights to understand metallic two-orbital systems such as
the recently discovered superconducting infinite-layer nickelates.
Reference
[1] For a review, see, A. Georges et al., Annu. Rev. Condens. Matter Phys.
4, 137 (2013).
[2] S. Ryee et al., Phys. Rev. Lett. 126, 206401 (2021)
Please also refer to the following URL:
www.issp.u-tokyo.ac.jp/maincontents/seminar/all2.html?pid=15295
www.issp.u-tokyo.ac.jp/maincontents/seminar/all2_en.html?pid=15295&p
type=seminar
Contact: Taisuke Ozaki
e-mail: t-ozaki@issp.u-tokyo.ac.jp
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