Probing quantum spin liquids with a quantum twisting microscope

Valerio Peri; Shahal Ilani; Patrick A. Lee; Gil Refael

doi:10.1103/PhysRevB.109.035127

Probing quantum spin liquids with a quantum twisting microscope

Valerio Peri, Shahal Ilani, Patrick A. Lee, Gil Refael

Department of Condensed Matter Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The experimental characterization of quantum spin liquids poses significant challenges due to the absence of long-range magnetic order, even at absolute zero temperature. The identification of these states of matter often relies on the analysis of their excitations. In this paper, we propose a method for detecting the signatures of the fractionalized excitations in quantum spin liquids using a tunneling spectroscopy setup. Inspired by the recent development of the quantum twisting microscope, we consider a planar tunneling junction, in which a candidate quantum spin-liquid material is placed between two graphene layers. By tuning the relative twist angle and voltage bias between the leads, we can extract the dynamical spin structure factor of the tunneling barrier with momentum and energy resolution. Our proposal presents a promising tool for experimentally characterizing quantum spin liquids in two-dimensional materials.

Original language	English
Article number	035127
Journal	Physical Review B
Volume	109
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.109.035127
Publication status	Published - 15 Jan 2024

Bibliographical note

V.P. acknowledges the generous support by the Gordon and Betty Moore Foundation's EPiQS Initiative, Grant No. GBMF8682. P.A.L. is grateful for the support by DOE office of Basic Sciences Grant No. DE-FG02- 03ER46076. S.I. is supported by the Leona M. and Harry B. Helmsley Charitable Trust grant, and the Rosa and Emilio Segre Research Award. G.R. expresses gratitude for the support by the Simons Foundation, the NSF DMR Grant No. 1839271, and the ARO MURI Grant No. W911NF-16-1-0361. G.R. and V.P. appreciate the support received from the Institute of Quantum Information and Matter. This work was completed at the Aspen Center for Physics, which is supported by the National Science Foundation Grant No. PHY-2210452.

Publisher Copyright:
© 2024 American Physical Society.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.109.035127

https://arxiv.org/abs/2308.15533Licence: Other

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title = "Probing quantum spin liquids with a quantum twisting microscope",

abstract = "The experimental characterization of quantum spin liquids poses significant challenges due to the absence of long-range magnetic order, even at absolute zero temperature. The identification of these states of matter often relies on the analysis of their excitations. In this paper, we propose a method for detecting the signatures of the fractionalized excitations in quantum spin liquids using a tunneling spectroscopy setup. Inspired by the recent development of the quantum twisting microscope, we consider a planar tunneling junction, in which a candidate quantum spin-liquid material is placed between two graphene layers. By tuning the relative twist angle and voltage bias between the leads, we can extract the dynamical spin structure factor of the tunneling barrier with momentum and energy resolution. Our proposal presents a promising tool for experimentally characterizing quantum spin liquids in two-dimensional materials.",

author = "Valerio Peri and Shahal Ilani and Lee, {Patrick A.} and Gil Refael",

note = "V.P. acknowledges the generous support by the Gordon and Betty Moore Foundation's EPiQS Initiative, Grant No. GBMF8682. P.A.L. is grateful for the support by DOE office of Basic Sciences Grant No. DE-FG02- 03ER46076. S.I. is supported by the Leona M. and Harry B. Helmsley Charitable Trust grant, and the Rosa and Emilio Segre Research Award. G.R. expresses gratitude for the support by the Simons Foundation, the NSF DMR Grant No. 1839271, and the ARO MURI Grant No. W911NF-16-1-0361. G.R. and V.P. appreciate the support received from the Institute of Quantum Information and Matter. This work was completed at the Aspen Center for Physics, which is supported by the National Science Foundation Grant No. PHY-2210452. Publisher Copyright: {\textcopyright} 2024 American Physical Society.",

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AB - The experimental characterization of quantum spin liquids poses significant challenges due to the absence of long-range magnetic order, even at absolute zero temperature. The identification of these states of matter often relies on the analysis of their excitations. In this paper, we propose a method for detecting the signatures of the fractionalized excitations in quantum spin liquids using a tunneling spectroscopy setup. Inspired by the recent development of the quantum twisting microscope, we consider a planar tunneling junction, in which a candidate quantum spin-liquid material is placed between two graphene layers. By tuning the relative twist angle and voltage bias between the leads, we can extract the dynamical spin structure factor of the tunneling barrier with momentum and energy resolution. Our proposal presents a promising tool for experimentally characterizing quantum spin liquids in two-dimensional materials.

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Probing quantum spin liquids with a quantum twisting microscope

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