Bi-2212/1T-TaS2 Van der Waals junctions: Interplay of proximity induced high-T c superconductivity and CDW order

Li, Ang J.; Zhu, Xiaochen; Stewart, G. R.; Hebard, Arthur F.

doi:10.1038/s41598-017-04645-1

Title: Bi-2212/1T-TaS₂ Van der Waals junctions: Interplay of proximity induced high-T _c superconductivity and CDW order

Abstract

Understanding the coexistence, competition and/or cooperation between superconductivity and charge density waves (CDWs) in the transition metal dichalcogenides (TMDs) is an elusive goal which, when realized, promises to reveal fundamental information on this important class of materials. Here in this paper, we use four-terminal current-voltage measurements to study the Van der Waals interface between freshly exfoliated flakes of the high-T_c superconductor, Bi-2212, and the CDW-dominated TMD layered material, 1T-TaS₂. For highly transparent barriers, there is a pronounced Andreev reflection feature providing evidence for proximity-induced high-Tc superconductivity in 1T-TaS₂ with a surprisingly large energy gap (~20 meV) equal to half that of intrinsic Bi-2212 (~40 meV). Our systematic study using conductance spectroscopy of junctions with different transparencies also reveals the presence of two separate boson modes, each associated with a “dip-hump” structure. Finally, we infer that the proximityinduced high-T_c superconductivity in the 1T-TaS₂ is driven by coupling to the metastable metallic phase coexisting within the Mott commensurate CDW (CCDW) phase and associated with a concomitant change of the CCDW order parameter in the interfacial region.

Authors:

^[1]; Zhu, Xiaochen ^[1]; Stewart, G. R. ^[1];

^[1]

Univ. of Florida, Gainesville, FL (United States). Dept. of Physics

Publication Date:: Wed Jul 05 00:00:00 EDT 2017

Research Org.:: Univ. of Florida, Gainesville, FL (United States)

Sponsoring Org.:: USDOE; National Science Foundation (NSF)

OSTI Identifier:: 1424730

Grant/Contract Number:: FG02-86ER45268; DMR–1305783

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Surfaces, interfaces and thin films; Electronic properties and materials; Superconducting properties and materials

Citation Formats


                    Li, Ang J., Zhu, Xiaochen, Stewart, G. R., and Hebard, Arthur F. Bi-2212/1T-TaS2 Van der Waals junctions: Interplay of proximity induced high-T c superconductivity and CDW order.  United States: N. p., 2017. 
Web.  doi:10.1038/s41598-017-04645-1.

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                    Li, Ang J., Zhu, Xiaochen, Stewart, G. R., & Hebard, Arthur F. Bi-2212/1T-TaS2 Van der Waals junctions: Interplay of proximity induced high-T c superconductivity and CDW order.  United States.  https://doi.org/10.1038/s41598-017-04645-1

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                    Li, Ang J., Zhu, Xiaochen, Stewart, G. R., and Hebard, Arthur F. Wed .  
"Bi-2212/1T-TaS2 Van der Waals junctions: Interplay of proximity induced high-T c superconductivity and CDW order".  United States.  https://doi.org/10.1038/s41598-017-04645-1.  https://www.osti.gov/servlets/purl/1424730.

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@article{osti_1424730,

  title        = {Bi-2212/1T-TaS2 Van der Waals junctions: Interplay of proximity induced high-T c superconductivity and CDW order},

  author       = {Li, Ang J. and Zhu, Xiaochen and Stewart, G. R. and Hebard, Arthur F.},

  abstractNote = {Understanding the coexistence, competition and/or cooperation between superconductivity and charge density waves (CDWs) in the transition metal dichalcogenides (TMDs) is an elusive goal which, when realized, promises to reveal fundamental information on this important class of materials. Here in this paper, we use four-terminal current-voltage measurements to study the Van der Waals interface between freshly exfoliated flakes of the high-Tc superconductor, Bi-2212, and the CDW-dominated TMD layered material, 1T-TaS2. For highly transparent barriers, there is a pronounced Andreev reflection feature providing evidence for proximity-induced high-Tc superconductivity in 1T-TaS2 with a surprisingly large energy gap (~20 meV) equal to half that of intrinsic Bi-2212 (~40 meV). Our systematic study using conductance spectroscopy of junctions with different transparencies also reveals the presence of two separate boson modes, each associated with a “dip-hump” structure. Finally, we infer that the proximityinduced high-Tc superconductivity in the 1T-TaS2 is driven by coupling to the metastable metallic phase coexisting within the Mott commensurate CDW (CCDW) phase and associated with a concomitant change of the CCDW order parameter in the interfacial region.},

  doi          = {10.1038/s41598-017-04645-1},

  journal      = {Scientific Reports},

  number       = 1,

  volume       = 7,

  place        = {United States},

  year         = {Wed Jul 05 00:00:00 EDT 2017},

  month        = {Wed Jul 05 00:00:00 EDT 2017}

}

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Works referencing / citing this record:

Low Temperature Specific Heat of Layered Transition Metal Dichalcogenides
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Journal of Superconductivity and Novel Magnetism, Vol. 33, Issue 1
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Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
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Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
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Scharf, Benedikt; Van Tuan, Dinh; Žutić, Igor
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Title: Bi-2212/1T-TaS2 Van der Waals junctions: Interplay of proximity induced high-T c superconductivity and CDW order

Abstract

Citation Formats

Interplay of electron–lattice interactions and superconductivity in Bi2Sr2CaCu2O8+δ journal, August 2006

Theory for tunneling spectroscopy of anisotropic superconductors journal, February 1996

Coupling Of The B1g Phonon To The Anti-Nodal Electronic States of Bi2Sr2Ca0.92Y0.08Cu2O(8+delta) text, January 2004

Properties of boson-exchange superconductors journal, October 1990

Midgap surface states as a novel signature for d x a 2 - x b 2 -wave superconductivity journal, March 1994

Charge carrier localization in pure and doped 1T-TaS2 journal, January 1980

Scanning tunneling microscopy of the charge-density-wave structure in 1 T - TaS 2 journal, June 1994

Measurements of Δ and v F from Andreev reflections and McMillan-Rowell oscillations in edge junctions of YBa 2 Cu 3 O 6.6 / YBa 2 Cu 2.55 Fe 0.45 O y / YBa 2 Cu 3 O 6.6 journal, October 1999

Nanoscale manipulation of the Mott insulating state coupled to charge order in 1T-TaS2 journal, January 2016

Controlling the metal-to-insulator relaxation of the metastable hidden quantum state in 1T-TaS 2 journal, July 2015

Observation of Mott Localization Gap Using Low Temperature Scanning Tunneling Spectroscopy in Commensurate 1 T − T a Sa 2 journal, October 1994

Quasiparticle bound states and low-temperature peaks of the conductance of NIS junctionsin d-wave superconductors journal, June 1997

Some Superconducting Intercalation Complexes of TaS 2 and Substituted Pyridines journal, October 1971

Proximity electron tunneling spectroscopy journal, November 1982

Phonon anomaly at the charge ordering transition in 1 T − TaS 2 journal, September 2002

The neutron resonance: modeling photoemission and tunneling data in the superconducting state of Bi_2Sr_2CaCu_2O_{8+d} text, January 2000

Observation of McMillan-Rowell like oscillations in underdoped YBa 2 Cu 3 O y junctions oriented along the node of the d -wave order parameter journal, April 2004

Experimental Detection of a Majorana Mode in the core of a Magnetic Vortex inside a Topological Insulator-Superconductor Bi 2 Te 3 / NbSe 2 Heterostructure journal, January 2015

From Mott state to superconductivity in 1T-TaS2 journal, November 2008

Finite-quasiparticle-lifetime effects in the differential conductance of Bi 2 Sr 2 CaCu 2 O y /Au junctions journal, April 1994

Interplay of electron-electron and electron-phonon interactions in the low-temperature phase of 1 T − TaS 2 journal, August 2015

McMillan–Rowell oscillations observed in c-axis Au/Bi2Sr2CaCu2O8+δ junctions journal, August 2004

Angle-resolved photoemission spectroscopy study of the superconducting gap anisotropy in Bi 2 Sr 2 Ca Cu 2 O 8 + x journal, October 1996

Andreev–Saint-James reflections: A probe of cuprate superconductors journal, March 2005

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67 journal, October 2012

Boundary Effects in Superconductors journal, January 1964

Electron Interference in a Normal Metal Induced by Superconducting Contracts journal, March 1966

Tunneling Model of the Superconducting Proximity Effect journal, November 1968

Specular interband Andreev reflections at van der Waals interfaces between graphene and NbSe2 journal, December 2015

Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion journal, April 1982

The low temperature electrical properties of 1T-TaS2 journal, September 1977

A new approach to high resolution measurements of structure in superconducting tunneling currents journal, April 1974

New method to study the proximity effect at the normal-metal – superconductor interface journal, November 1987

A new approach to high resolution measurements of structure in superconducting tunneling currents journal, April 1974

Direct Measurement of Quasiparticle-Lifetime Broadening in a Strong-Coupled Superconductor journal, November 1978

Four-Terminal Phase-Coherent Conductance journal, October 1986

Charge-density-wave origin of the dip-hump structure in tunnel spectra of the BSCCO superconductor journal, February 2007

Observation of the Low Temperature Pseudogap in the Vortex Cores of Bi 2 Sr 2 CaCu 2 O 8 + δ journal, April 1998

Intrinsic Josephson effects in Bi 2 Sr 2 CaCu 2 O 8 single crystals journal, April 1992

Excess conductance of superconductor-semiconductor interfaces due to phase conjugation between electrons and holes journal, July 1992

Van der Waals heterostructures journal, July 2013

Growth and properties of oxygen- and ion-doped Bi 2 Sr 2 CaCu 2 O 8 + δ single crystals journal, April 1990

Fast electronic resistance switching involving hidden charge density wave states journal, May 2016

Proximity-induced high-temperature superconductivity in the topological insulators Bi2Se3 and Bi2Te3 journal, January 2012

Intrinsic Josephson effects in high- T c superconductors journal, January 1994

A metallic mosaic phase and the origin of Mott-insulating state in 1T-TaS2 journal, March 2016

Vacuum tunneling spectroscopy and asymmetric density of states of Bi 2 Sr 2 CaCu 2 O 8 + δ journal, April 1995

Gate-tunable phase transitions in thin flakes of 1T-TaS2 journal, January 2015

Destruction of the Fermi surface in underdoped high-Tc superconductors journal, March 1998

Angular dependence of the upper critical field of Bi 2.2 Sr 2 Ca 0.8 Cu 2 O 8 + δ journal, September 1988

Atomistic origin of an ordered superstructure induced superconductivity in layered chalcogenides journal, January 2015

Elementary excitations in the vicinity of a normal metal-superconducting metal contact journal, March 1963

Direct spectroscopic evidence for phase competition between the pseudogap and superconductivity in Bi2Sr2CaCu2O8+δ journal, November 2014

Andreev bound states in high temperature superconductors journal, October 1998

Electrically Driven Reversible Insulator–Metal Phase Transition in 1T-TaS 2 journal, February 2015

Charge-Density-Wave Mechanism in 2 H − NbSe 2 : Photoemission Results journal, May 1999

Controlling the metal-to-insulator relaxation of the metastable hidden quantum state in 1T-TaS 2 journal, July 2015

Real-Space Coexistence of the Melted Mott State and Superconductivity in Fe-Substituted 1 T − TaS 2 journal, October 2012

Neutron Resonance: Modeling Photoemission and Tunneling Data in the Superconducting State of Bi 2 Sr 2 CaCu 2 O 8 + δ journal, October 2000

Coupling of the B 1 g Phonon to the Antinodal Electronic States of B i 2 S r 2 C a 0.92 Y 0.08 C u 2 O 8 + δ journal, September 2004

Photoemission Studies of High-Tc Superconductors: The Superconducting Gap journal, January 1995

Metal intercalation compounds of TaS 2 : Preparation and properties journal, August 1973

Low Temperature Specific Heat of Layered Transition Metal Dichalcogenides journal, October 2019

Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum text, January 2018

Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum journal, March 2019

Title: Bi-2212/1T-TaS₂ Van der Waals junctions: Interplay of proximity induced high-T _c superconductivity and CDW order

Interplay of electron–lattice interactions and superconductivity in Bi2Sr2CaCu2O8+δ
journal, August 2006

Theory for tunneling spectroscopy of anisotropic superconductors
journal, February 1996

Coupling Of The B1g Phonon To The Anti-Nodal Electronic States of Bi2Sr2Ca0.92Y0.08Cu2O(8+delta)
text, January 2004

Properties of boson-exchange superconductors
journal, October 1990

Midgap surface states as a novel signature for $d_{x a}^{2}$ - $x_{b}^{2}$ -wave superconductivity
journal, March 1994

Charge carrier localization in pure and doped 1T-TaS2
journal, January 1980

Scanning tunneling microscopy of the charge-density-wave structure in 1 T - ${TaS}_{2}$
journal, June 1994

Measurements of $Δ$ and $v_{F}$ from Andreev reflections and McMillan-Rowell oscillations in edge junctions of ${YBa}_{2} {Cu}_{3} O_{6.6} / {YBa}_{2} {Cu}_{2.55} {Fe}_{0.45} O_{y} / {YBa}_{2} {Cu}_{3} O_{6.6}$
journal, October 1999

Nanoscale manipulation of the Mott insulating state coupled to charge order in 1T-TaS2
journal, January 2016

Controlling the metal-to-insulator relaxation of the metastable hidden quantum state in 1T-TaS ₂
journal, July 2015

Observation of Mott Localization Gap Using Low Temperature Scanning Tunneling Spectroscopy in Commensurate $1 T - T a {Sa}_{2}$
journal, October 1994

Quasiparticle bound states and low-temperature peaks of the conductance of NIS junctionsin d-wave superconductors
journal, June 1997

Some Superconducting Intercalation Complexes of TaS ₂ and Substituted Pyridines
journal, October 1971

Proximity electron tunneling spectroscopy
journal, November 1982

Phonon anomaly at the charge ordering transition in $1 T - {TaS}_{2}$
journal, September 2002

The neutron resonance: modeling photoemission and tunneling data in the superconducting state of Bi_2Sr_2CaCu_2O_{8+d}
text, January 2000

Observation of McMillan-Rowell like oscillations in underdoped ${YBa}_{2} {Cu}_{3} O_{y}$ junctions oriented along the node of the d -wave order parameter
journal, April 2004

Experimental Detection of a Majorana Mode in the core of a Magnetic Vortex inside a Topological Insulator-Superconductor ${Bi}_{2} {Te}_{3} / {NbSe}_{2}$ Heterostructure
journal, January 2015

From Mott state to superconductivity in 1T-TaS2
journal, November 2008

Finite-quasiparticle-lifetime effects in the differential conductance of ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{y}$ /Au junctions
journal, April 1994

Interplay of electron-electron and electron-phonon interactions in the low-temperature phase of $1 T - {TaS}_{2}$
journal, August 2015

McMillan–Rowell oscillations observed in c-axis Au/Bi2Sr2CaCu2O8+δ junctions
journal, August 2004

Angle-resolved photoemission spectroscopy study of the superconducting gap anisotropy in ${Bi}_{2} {Sr}_{2} Ca {Cu}_{2} O_{8 + x}$
journal, October 1996

Andreev–Saint-James reflections: A probe of cuprate superconductors
journal, March 2005

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67
journal, October 2012

Boundary Effects in Superconductors
journal, January 1964

Electron Interference in a Normal Metal Induced by Superconducting Contracts
journal, March 1966

Tunneling Model of the Superconducting Proximity Effect
journal, November 1968

Specular interband Andreev reflections at van der Waals interfaces between graphene and NbSe2
journal, December 2015

Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion
journal, April 1982

The low temperature electrical properties of 1T-TaS2
journal, September 1977

A new approach to high resolution measurements of structure in superconducting tunneling currents
journal, April 1974

New method to study the proximity effect at the normal-metal – superconductor interface
journal, November 1987

A new approach to high resolution measurements of structure in superconducting tunneling currents
journal, April 1974

Direct Measurement of Quasiparticle-Lifetime Broadening in a Strong-Coupled Superconductor
journal, November 1978

Four-Terminal Phase-Coherent Conductance
journal, October 1986

Charge-density-wave origin of the dip-hump structure in tunnel spectra of the BSCCO superconductor
journal, February 2007

Observation of the Low Temperature Pseudogap in the Vortex Cores of ${Bi}_{2} {Sr}_{2} {CaCu}_{2} O_{8 + δ}$
journal, April 1998

Intrinsic Josephson effects in ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8}$ single crystals
journal, April 1992

Excess conductance of superconductor-semiconductor interfaces due to phase conjugation between electrons and holes
journal, July 1992

Van der Waals heterostructures
journal, July 2013

Growth and properties of oxygen- and ion-doped ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8 + δ}$ single crystals
journal, April 1990

Fast electronic resistance switching involving hidden charge density wave states
journal, May 2016

Proximity-induced high-temperature superconductivity in the topological insulators Bi2Se3 and Bi2Te3
journal, January 2012

Intrinsic Josephson effects in high- $T_{c}$ superconductors
journal, January 1994

A metallic mosaic phase and the origin of Mott-insulating state in 1T-TaS2
journal, March 2016

Vacuum tunneling spectroscopy and asymmetric density of states of ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8 + δ}$
journal, April 1995

Gate-tunable phase transitions in thin flakes of 1T-TaS2
journal, January 2015

Destruction of the Fermi surface in underdoped high-Tc superconductors
journal, March 1998

Angular dependence of the upper critical field of ${Bi}_{2.2}$ ${Sr}_{2}$ ${Ca}_{0.8}$ ${Cu}_{2}$ $O_{8 + δ}$
journal, September 1988

Atomistic origin of an ordered superstructure induced superconductivity in layered chalcogenides
journal, January 2015

Elementary excitations in the vicinity of a normal metal-superconducting metal contact
journal, March 1963

Direct spectroscopic evidence for phase competition between the pseudogap and superconductivity in Bi2Sr2CaCu2O8+δ
journal, November 2014

Andreev bound states in high temperature superconductors
journal, October 1998

Electrically Driven Reversible Insulator–Metal Phase Transition in 1T-TaS ₂
journal, February 2015

Charge-Density-Wave Mechanism in $2 H - {NbSe}_{2}$ : Photoemission Results
journal, May 1999

Controlling the metal-to-insulator relaxation of the metastable hidden quantum state in 1T-TaS ₂
journal, July 2015

Real-Space Coexistence of the Melted Mott State and Superconductivity in Fe-Substituted $1 T − {TaS}_{2}$
journal, October 2012

Neutron Resonance: Modeling Photoemission and Tunneling Data in the Superconducting State of ${{Bi}_{2} {Sr}_{2} {CaCu}_{2} O}_{8 + δ}$
journal, October 2000

Coupling of the $B_{1 g}$ Phonon to the Antinodal Electronic States of ${B i}_{2} {S r}_{2} {C a}_{0.92} Y_{0.08} {C u}_{2} O_{8 + δ}$
journal, September 2004

Photoemission Studies of High-Tc Superconductors: The Superconducting Gap
journal, January 1995

Metal intercalation compounds of TaS ₂ : Preparation and properties
journal, August 1973

Low Temperature Specific Heat of Layered Transition Metal Dichalcogenides
journal, October 2019

Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
text, January 2018

Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
journal, March 2019