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Local Thermodynamic Probe of Correlated Electrons in Moire Systems.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Local Thermodynamic Probe of Correlated Electrons in Moire Systems./
作者:	Yu, Jiachen.
面頁冊數:	1 online resource (214 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-04, Section: B.
Contained By:	Dissertations Abstracts International85-04B.
標題:	Phase transitions. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30614619click for full text (PQDT)
ISBN:	9798380481939

Local Thermodynamic Probe of Correlated Electrons in Moire Systems.
Yu, Jiachen.

Local Thermodynamic Probe of Correlated Electrons in Moire Systems. - 1 online resource (214 pages)

Source: Dissertations Abstracts International, Volume: 85-04, Section: B.

Thesis (Ph.D.)--Stanford University, 2023.

Includes bibliographical references

The emergence of "moir´e materials", heterostructures formed by twisting and stacking atomically thin layers, has inaugurated a new era for investigating correlated electronic systems. They o↵er unprecedented tunability over band structure, electronic interactions and topology. In this dissertation, I will present my works on the use of a specialized scanning probe microscope, a scanning single-electron transistor (SET), to locally investigate correlated states in a diverse array of moir´e systems. The SET probes the local compressibility and chemical potential of an electronic system with unparalleled resolution, enabling access to the delicate interaction-driven incompressible (insulating) phases and their phase transitions.In this dissertation, I will first summarize instrumentation e↵orts to set up two di↵erent scanning SET systems at Stanford University, which were used to carry out scientific projects described in this dissertation. I will then describe measurements on a selection of representative examples from two distinct classes of moir´e materials. In magic-angle twisted bilayer graphene, I explore both the interacting Chern and Hofstadter physics in the high magnetic field regime, as well as the enigmatic correlated insulators found at low magnetic fields. In a semiconductor moir´e heterobilayer WSe2/MoSe2, I describe measurements that reveal the coexistence of flat and dispersive moir´e bands that leads to intricate competitions between Hofstadter and unconventional charge-ordered states. In a twisted double bilayer WSe2 system, I discuss how the introduction of valley moir´e bands leads to new correlated ground states and charge excitations. Through these measurements, I will demonstrate how the local thermodynamic sensing capabilities of scanning SET synergize with the high tunability of moir´e materials in uncovering novel correlated electronic phases.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798380481939Subjects--Topical Terms:

3560387
Phase transitions.
Index Terms--Genre/Form:

542853
Electronic books.

Local Thermodynamic Probe of Correlated Electrons in Moire Systems.
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