Evidence of Nodal Superconductivity in Monolayer 1H-TaS2 with Hidden Order Fluctuations

Viliam Vaňo; Somesh Chandra Ganguli; Mohammad Amini; Linghao Yan; Maryam Khosravian; Guangze Chen; Shawulienu Kezilebieke; Jose L. Lado; Peter Liljeroth

doi:10.1002/adma.202305409

Evidence of Nodal Superconductivity in Monolayer 1H-TaS₂ with Hidden Order Fluctuations

Viliam Vaňo, Somesh Chandra Ganguli, Mohammad Amini, Linghao Yan, Maryam Khosravian, Guangze Chen, Shawulienu Kezilebieke, Jose L. Lado^*, Peter Liljeroth^*

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

7 Sitaatiot (Scopus)

55 Lataukset (Pure)

Abstrakti

Unconventional superconductors represent one of the fundamental directions in modern quantum materials research. In particular, nodal superconductors are known to appear naturally in strongly correlated systems, including cuprate superconductors and heavy-fermion systems. Van der Waals materials hosting superconducting states are well known, yet nodal monolayer van der Waals superconductors have remained elusive. Here, using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) experiments, it is shown that pristine monolayer 1H-TaS₂ realizes a nodal superconducting state. Non-magnetic disorder drives the nodal superconducting state to a conventional gapped s-wave state. Furthermore, many-body excitations emerge close to the gap edge, signalling a potential unconventional pairing mechanism. The results demonstrate the emergence of nodal superconductivity in a van der Waals monolayer, providing a building block for van der Waals heterostructures exploiting unconventional superconducting states.

Alkuperäiskieli	Englanti
Artikkeli	2305409
Julkaisu	Advanced Materials
Vuosikerta	35
Numero	45
Varhainen verkossa julkaisun päivämäärä	2023
DOI - pysyväislinkit	https://doi.org/10.1002/adma.202305409
Tila	Julkaistu - 9 marrask. 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pääsy asiakirjaan

10.1002/adma.202305409Lisenssi: CC BY

Evidence of Nodal Superconductivity in Monolayer 1H-TaS2 with Hidden Order FluctuationsFinal published version, 1,79 MBLisenssi: CC BY

Muut tiedostot ja linkit

Linkki julkaisuun Scopuksessa

1 Aktiivinen
4 Päättynyt

-: Lado Jose AT-palkka
Lado, J.
01/09/2020 → 31/08/2025
Projekti: Academy of Finland: Other research funding
-: Lado Jose AT-kulut
Lado, J., Hyart, T., Kumar, P. & Koch, R.
01/09/2020 → 31/08/2023
Projekti: Academy of Finland: Other research funding
ADaM: Keinotekoiset designer-materiaalit
Liljeroth, P., Aapro, M., Amini, M., Gonzalez Herrero, H., Khosravian, M., Drost, R., Kipnis, A., Otero Fumega, A., Arslan, B. & Karjasilta, A.
01/01/2019 → 31/12/2023
Projekti: Academy of Finland: Other research funding

OtaNano
Anna Rissanen (Manager)
Aalto-yliopisto
Laitteistot/tilat: Facility
OtaNano Nanomikroskopiakeskus
Jani Seitsonen (Manager)
OtaNano
Laitteistot/tilat: Facility
Science-IT
Mikko Hakala (Manager)
Perustieteiden korkeakoulu
Laitteistot/tilat: Facility

Siteeraa tätä

@article{b7633ef83c90475eb8a191d8b188817a,

title = "Evidence of Nodal Superconductivity in Monolayer 1H-TaS2 with Hidden Order Fluctuations",

abstract = "Unconventional superconductors represent one of the fundamental directions in modern quantum materials research. In particular, nodal superconductors are known to appear naturally in strongly correlated systems, including cuprate superconductors and heavy-fermion systems. Van der Waals materials hosting superconducting states are well known, yet nodal monolayer van der Waals superconductors have remained elusive. Here, using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) experiments, it is shown that pristine monolayer 1H-TaS2 realizes a nodal superconducting state. Non-magnetic disorder drives the nodal superconducting state to a conventional gapped s-wave state. Furthermore, many-body excitations emerge close to the gap edge, signalling a potential unconventional pairing mechanism. The results demonstrate the emergence of nodal superconductivity in a van der Waals monolayer, providing a building block for van der Waals heterostructures exploiting unconventional superconducting states.",

keywords = "monolayer transition metal dichalcogenide, nodal superconductivity, scanning tunneling microscopy (STM), scanning tunneling spectroscopy, unconventional superconductivity, van der Waals materials",

author = "Viliam Va{\v n}o and Ganguli, {Somesh Chandra} and Mohammad Amini and Linghao Yan and Maryam Khosravian and Guangze Chen and Shawulienu Kezilebieke and Lado, {Jose L.} and Peter Liljeroth",

note = "Funding Information: V.V. and S.C.G. contributed equally to this work. This research made use of the Aalto Nanomicroscopy Center (Aalto NMC) facilities and was supported by the European Research Council (ERC‐2017‐AdG no. 788185 “Artificial Designer Materials”) and Academy of Finland (Academy professor funding nos. 318995 and 320555, Academy research fellow nos. 331342, 336243 and no. 338478 and 346654). L.Y. acknowledges support from the Jiangsu Specially‐Appointed Professors Program, Suzhou Key Laboratory of Surface and Interface Intelligent Matter (Grant SZS2022011), Suzhou Key Laboratory of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science & Technology, and the 111 Project. The authors acknowledge the computational resources provided by the Aalto Science‐IT project. | openaire: EC/H2020/788185/EU//E-DESIGN ",

year = "2023",

month = nov,

day = "9",

doi = "10.1002/adma.202305409",

language = "English",

volume = "35",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-VCH Verlag",

number = "45",

}

TY - JOUR

T1 - Evidence of Nodal Superconductivity in Monolayer 1H-TaS2 with Hidden Order Fluctuations

AU - Vaňo, Viliam

AU - Ganguli, Somesh Chandra

AU - Amini, Mohammad

AU - Yan, Linghao

AU - Khosravian, Maryam

AU - Chen, Guangze

AU - Kezilebieke, Shawulienu

AU - Lado, Jose L.

AU - Liljeroth, Peter

N1 - Funding Information: V.V. and S.C.G. contributed equally to this work. This research made use of the Aalto Nanomicroscopy Center (Aalto NMC) facilities and was supported by the European Research Council (ERC‐2017‐AdG no. 788185 “Artificial Designer Materials”) and Academy of Finland (Academy professor funding nos. 318995 and 320555, Academy research fellow nos. 331342, 336243 and no. 338478 and 346654). L.Y. acknowledges support from the Jiangsu Specially‐Appointed Professors Program, Suzhou Key Laboratory of Surface and Interface Intelligent Matter (Grant SZS2022011), Suzhou Key Laboratory of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science & Technology, and the 111 Project. The authors acknowledge the computational resources provided by the Aalto Science‐IT project. | openaire: EC/H2020/788185/EU//E-DESIGN

PY - 2023/11/9

Y1 - 2023/11/9

N2 - Unconventional superconductors represent one of the fundamental directions in modern quantum materials research. In particular, nodal superconductors are known to appear naturally in strongly correlated systems, including cuprate superconductors and heavy-fermion systems. Van der Waals materials hosting superconducting states are well known, yet nodal monolayer van der Waals superconductors have remained elusive. Here, using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) experiments, it is shown that pristine monolayer 1H-TaS2 realizes a nodal superconducting state. Non-magnetic disorder drives the nodal superconducting state to a conventional gapped s-wave state. Furthermore, many-body excitations emerge close to the gap edge, signalling a potential unconventional pairing mechanism. The results demonstrate the emergence of nodal superconductivity in a van der Waals monolayer, providing a building block for van der Waals heterostructures exploiting unconventional superconducting states.

AB - Unconventional superconductors represent one of the fundamental directions in modern quantum materials research. In particular, nodal superconductors are known to appear naturally in strongly correlated systems, including cuprate superconductors and heavy-fermion systems. Van der Waals materials hosting superconducting states are well known, yet nodal monolayer van der Waals superconductors have remained elusive. Here, using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) experiments, it is shown that pristine monolayer 1H-TaS2 realizes a nodal superconducting state. Non-magnetic disorder drives the nodal superconducting state to a conventional gapped s-wave state. Furthermore, many-body excitations emerge close to the gap edge, signalling a potential unconventional pairing mechanism. The results demonstrate the emergence of nodal superconductivity in a van der Waals monolayer, providing a building block for van der Waals heterostructures exploiting unconventional superconducting states.

KW - monolayer transition metal dichalcogenide

KW - nodal superconductivity

KW - scanning tunneling microscopy (STM)

KW - scanning tunneling spectroscopy

KW - unconventional superconductivity

KW - van der Waals materials

UR - http://www.scopus.com/inward/record.url?scp=85171533933&partnerID=8YFLogxK

U2 - 10.1002/adma.202305409

DO - 10.1002/adma.202305409

M3 - Article

AN - SCOPUS:85171533933

SN - 0935-9648

VL - 35

JO - Advanced Materials

JF - Advanced Materials

IS - 45

M1 - 2305409

ER -

Evidence of Nodal Superconductivity in Monolayer 1H-TaS2 with Hidden Order Fluctuations

Abstrakti

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

-: Lado Jose AT-palkka

-: Lado Jose AT-kulut

ADaM: Keinotekoiset designer-materiaalit

Laitteet

OtaNano

OtaNano Nanomikroskopiakeskus

Science-IT

Siteeraa tätä

Evidence of Nodal Superconductivity in Monolayer 1H-TaS₂ with Hidden Order Fluctuations