Room-temperature hundred-μm quantum states in Cu(111)

Author:

Jeong Se-Young1,Park Byung Cheol2,Ha Taewoo3ORCID,Kim Su Jae4ORCID,Lee Yousil5,Yun Changjin6,Regmi Binod7,Rhie Kungwon6,Lee Kyujoon8,Kim Jungdae9ORCID,Choi Hak Soo10ORCID,Kim Seong-Gon7ORCID

Affiliation:

1. Massachusetts General Hospital and Harvard Medical School

2. Sungkyunkwan University

3. Institute for Basic Science

4. Pusan National University

5. Copper Innovative Technology (CIT) Co

6. Korea University

7. Mississippi State University

8. Division of Display and Semiconductor Physics, Korea University

9. Department of Physics, University of Ulsan

10. Massachusetts General Hospital

Abstract

Abstract The quantum state of matter, a platform of profound quantum physics, is coherent under extreme conditions, such as ultralow temperature and two-dimensional confinement. Herein, in contrast to conventional views, the Cu(111) grain boundary (GB)-free films show quantum states greater than 400 μm at room temperature (RT). We directly observe hundred-micrometre-scale coherence and interference in the Cu(111) quantum states across four dimensions over time, frequency, and space. This RT macroscopic quantum nature is observed via tip-assisted terahertz spectroscopy, enabling access to electrons in picoseconds before losing their coherence due to impurity scattering. The quantum edge and bulk electron states exhibiting ‘quantum oscillation’ are separately visualized under cross-polarization conditions at distinct frequencies: vortical edge charges at 0.2 THz and circulating bulk charges at 0.6 THz. Our findings highlight the combination of the lengthened coherence in GB-free noble metals; here, the quantum states are sustainable for over one year due to the oxidation resistance of GB-free Cu(111), and GB-free Cu(111) is an unprecedented room-temperature quantum platform.

Publisher

Research Square Platform LLC

Reference29 articles.

1. Ashcroft NW, Mermin ND (1976) Solid State Physics. Brooks/Cole

2. Kittle C (1976) Introduction to Solid State Physics. Wiley, New York

3. Sólyom J (2008) Fundamentals of the Physics of Solids: Vol. I: Structure and Dynamics. Springer

4. Sakurai JJ, Napolitano J (2017) Modern Quantum Mechanics. Cambridge Univ. Press

5. Dressel M, Grüner G (2003) Electrodynamics of Solids. Cambridge Univ. Press

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