Spin-orbital liquid state and liquid-gas metamagnetic transition on a 
pyrochlore lattice

Tang, Nan; Gritsenko, Yulia; Kimura, Kenta; Bhattacharjee, Subhro; Sakai, Akito; Fu, Mingxuan; Takeda, Hikaru; Man, Huiyuan; Sugawara, Kento; Matsumoto, Yosuke; Shimura, Yasuyuki; Wen, Jiajia; Broholm, Collin; Sawa, Hiroshi; Takigawa, Masashi; Sakakibara, Toshiro; Zherlitsyn, Sergei; Wosnitza, Joachim; Moessner, Roderich; Nakatsuji, Satoru

doi:10.1038/s41567-022-01816-4

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Spin-orbital liquid state and liquid-gas metamagnetic transition on a pyrochlore lattice

MPS-Authors

/persons/resource/persons145694

Moessner, Roderich
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Tang, N., Gritsenko, Y., Kimura, K., Bhattacharjee, S., Sakai, A., Fu, M., Takeda, H., Man, H., Sugawara, K., Matsumoto, Y., Shimura, Y., Wen, J., Broholm, C., Sawa, H., Takigawa, M., Sakakibara, T., Zherlitsyn, S., Wosnitza, J., Moessner, R., & Nakatsuji, S. (2022). Spin-orbital liquid state and liquid-gas metamagnetic transition on a pyrochlore lattice. Nature Physics, 19(1), 92-98. doi:10.1038/s41567-022-01816-4.

引用: https://hdl.handle.net/21.11116/0000-000C-B9E3-3

要旨

Crystal structures with degenerate electronic orbitals are unstable towards lattice distortions that lift the degeneracy. Although these Jahn-Teller distortions have profound effects on magnetism, they are typically unaffected by the onset of magnetic ordering because of a separation in energy scales. Here we show the contrary case in Pr2Zr2O7, where orbital degeneracy remains down to the millikelvin range due to an interplay between spins and orbitals. Pr2Zr2O7 is a multipolar spin ice with strongly localized 4f electrons in an even-number configuration, giving rise to a non-Kramers doublet that carries transverse quadrupolar and longitudinal dipolar moments. Our study of ultrapure single crystals of Pr2Zr2O7 finds comprehensive evidence for enhanced spin-orbital quantum dynamics of the non-Kramers doublet. This dynamical Jahn-Teller effect is encapsulated by the liquid-gas metamagnetic transition that is characteristic of spin ice being accompanied by strong lattice softening. This behaviour suggests that a spin-orbital liquid state forms on the pyrochlore lattice at low temperatures and low magnetic fields.